A first vector predictor candidate list generating unit generates a first motion vector predictor candidate list from motion vectors of encoded neighboring blocks to blocks to be encoded. A second vector predictor candidate list generating unit generates a second motion vector predictor candidate list from motion vectors of blocks at the same positions as the blocks to be encoded in an encoded image and neighboring blocks to the blocks at the same positions. A combination determining unit determines whether to generate a third vector predictor candidate list combining the first and second vector predictor candidate lists by comparison of a block size of the blocks to be encoded and a threshold size. A vector predictor candidate list deciding unit generates the third vector predictor candidate list from the first vector predictor candidate list.

The present disclosure generally relates to a method and device for encoding a frame. The method and the device comprises a processor configured for: —encoding (12) a backlight frame determined (11) from the frame; —obtaining (13) at least one component of a residual frame by dividing each component of the frame by a decoded version of the backlight frame; —mapping each component (YRes) of the residual frame (Res) such that the mapping of each pixel (YRes,P) of a component (YRes) of the residual frame Res depends on the pixel value (Balp) of either the backlight frame (Bal) or a decoded version of the backlight frame (Bal), associated with this pixel (p); and—encoding (18) the mapped residual frame. The disclosure further relates to a decoding method and device.

The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that can improve transmission efficiency. An encoded signal is generated based on realtime data indicated by a waveform L using a predetermined fixed bit rate as a maximum code amount Sx and the encoded signal into which non-realtime data with an insufficient code amount is inserted is transmitted at the fixed bit rate, as indicated by a range Z12, when a code amount of the generated encoded signal is insufficient for the maximum code amount Sx. The present technology can be applied to broadcasting communication.

A piezoelectric driving device includes: a substrate including a fixed portion, and a vibrating body portion which is provided with a piezoelectric element and is supported by the fixed portion; and a contact portion which comes into contact with a driven body, and transmits movement of the vibrating body portion to the driven body, the contact portion is provided at an end portion in the longitudinal direction of the vibrating body portion, and a difference between a distance between the end portion when the contact portion is not pressed against the driven body and a tip end of the contact portion, and a distance between the end portion when the contact portion is pressed against the driven body and the tip end, is smaller than a total amplitude in the longitudinal direction in a case where the vibrating body portion is driven.

A handheld device comprising a motor for generating an airflow through the device, the motor including: a frame for supporting a rotor assembly and a stator assembly, the frame including an inner wall and an outer wall and a plurality of diffuser vanes extending between the inner wall and outer wall; a rotor assembly including a shaft, a magnet, a bearing assembly and an impeller; and a stator assembly including a bobbin, a stator core and a winding wound around the bobbin; the frame being formed of zinc and the impeller being formed of aluminium.

A pump system (120) has a central pump unit (110), with which at least one hook-up unit (130). The least one hook-up unit (130) is from a group of a plurality of hook-up units (130) that can be combined in modular form for setting an operating point of a pump (10) that forms the pump unit (110). A method uses such a hook-up unit (130) in a pump system (120) for setting an operating point of the pump unit (110) thereof. A medical device is provided with such a pump unit (110) or with such a pump unit (110) and at least one hook-up unit (130) combined with the pump unit (110).

A liquid-metering device comprising a droplet generator including a reservoir and, connected to the latter, a displacement space which is modifiable by an electromechanical transducer and which has an outlet opening and, upon excitation of the transducer, shoots a liquid droplet from a cold area into a heatable area through or counter to a gas stream generated by a gas source. To make the device suitable for automatic and quasi-continuous liquid metering in process analysis, a heatable evaporation chamber is provided through which the liquid to be metered flows via valves, and, between the evaporation chamber and the reservoir, a condensate chamber is connected via further valves. The condensate chamber and the reservoir are connected via additional valves and a pressure regulator to the gas source.

A method for separating particles from particle-laden gas. Charged particles are formed by charging particles of a particle-laden gas. A gas jet is provided by guiding the particle-laden gas by a flow guide. Particles from the gas jet are collected to a collecting electrode by an electric field. An effective collecting area of the collecting electrode is positioned such that gas velocity gradient at each point of the effective collecting area is smaller than 10% of the maximum gas velocity in the gas jet divided by the height dimension of the jet.

A fast gas chromatograph (GC) method and device for obtaining fast gas chromatography analysis, in which a capillary gas chromatography column is inserted into a resistively heated metal tube located mostly outside a heated oven, which serves as a heated transferline to a flexible column that enters a resistively heated metal tube from a gas chromatograph injector and exits into a gas chromatograph detector. The resistively heated metal tube of the fast GC device has an internal diameter that is over twice the external diameter of the GC column so as to enable the insertion of several capillary GC column loops. The process of column insertion into or removal from the heated tube is aided by touching it with an ultrasound vibrating device that remarkably reduces the friction during column insertion into the metal tube heater.

The present invention relates to a process and apparatus for producing a fluid enriched in carbon dioxide starting from a waste gas from a ferrous metallurgy unit.

A system and method to recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray, the concentration of the liquid desiccant may be dynamically changed based on changes within the system. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.

A punching device includes a punching unit that punches a hole in a sheet of paper; a container that receives a chad of paper generated upon punching by the punching unit; a dispersing member that is provided within the container and that is configured to disperse the chad of paper; and a guiding member configured to guide the chad of paper that is generated upon punching by the punching unit and fallen into the container to the dispersing member.

A cutting device for cutting labels includes a cutting element for cutting into individual labels a label strip that is provided with a plurality of labels arranged one behind the other in the direction of the length of the label strip. The cutting element has a cutting tool in a first axis, about which the cutting element is rotatable. A counter-pressure roller which serves for the placement of the label strip is rotatable about a second axis arranged parallel to the first axis and has at least one counter-cutting bar which is provided on the outer surface of the counter-pressure roller essentially parallel to the second axis.

A rotary cutter device includes a rotating body, a plurality of rotary blades, a fixed blade, a feeding portion, and a control portion. The rotating body is configured to be rotatable around a central axis. The plurality of rotary blades are provided on the rotating body. The fixed blade is provided facing a trajectory that cutting edges of the plurality of rotary blades describe when the plurality of rotary blades rotate. The feeding portion is configured to feed a sheet-shaped object along a linear feed path that passes close to the fixed blade. The control portion is configured to rotate the plurality of rotary blades around the central axis toward the fixed blade from the opposite side of the feed path from the fixed blade.

A tool is provided for moving a first clamping or gripping member toward or away from a second facing clamping or gripping member, the tool having a double threaded drive shaft coupled to opposed threaded linkage driving members for causing the threaded linkage driving members to be driven toward or away from each other. As the threaded linkage driving members move closer, the resulting angle of the links becomes steeper, thus increasing the mechanical advantage of the clamping tool, enhancing clamping forces. A beneficial result is a clamping apparatus that requires less manual energy than a traditional clamp. Another beneficial result is provided if the same amount of energy is applied to the driveshaft as in a traditional clamp, the resulting clamping force is significantly higher. If the second clamping member is adjustable, it accommodates wide variations in thickness of an object positioned between the first and second clamping members.

A positioning device for a turnable table of a saw machine having a pivot shaft that pivotally connects a pair of clamping units. A pressing member with an attachment portion for attaching to a coupling unit may be formed on each clamping unit. By manipulating a trigger of the coupling unit, the pair of clamping units can be driven to rotate a pair of corresponding clench members for selectively clamping or unclamping a base of the saw machine. Thereby, the turnable table can be secured in place upon adjustment.

A device and a method for cutting through the adhesive bead of panes that have been fixed by bonding is specified, said device having a base body on which at least one suction plate for fixing on a pane to be separated out as well as one motor-drivable coil for winding-on a separating wire are accommodated, wherein at least two guide rollers are held on the base body by means of extension arms at a distance which is adjustable in respect to each other. The device is preferably positioned approximately diagonally on the pane in such a manner that the guide rollers are situated on the outer ends of the extension arms in the vicinity of the corner regions of the pane.

A sheet material punching device includes a plurality of punches and links, a driving mechanism having drive gears capable of transmitting a rotational driving force of an electric motor (driving source), and slide arms allowed to reciprocate along the longitudinal direction of a frame, the slide arms making the punches reciprocate in a punching direction along with their own reciprocating motions by the intermediary of links. The slide arms respectively have cams capable of converting the rotational motion of the driving mechanism into the reciprocating motions of the slide arms, and auxiliary cams capable of moving the slide arms to predefined initial positions. The drive gears respectively have cam followers to be engaged with the cams, and auxiliary cam followers to be engaged with the auxiliary cams. The sheet material punching device return the slide arms to the initial positions without increasing a driving energy.

A simple and compact rotary cutter unit capable of detecting a home position of a rotary cutter, and a printer device having the rotary cutter unit. A radially outwardly extending fin-shaped detected member is arranged on an end portion of the rotating blade opposed to a second gear of the rotating blade. A photosensor is arranged within a main frame of the printer device so that the photosensor may detect the fin-shaped member when the rotating blade is positioned at the home position. The fin-shaped member and the photosensor are not positioned outside relative to both ends of the rotating blade in relation to the direction of the rotational axis of the rotating blade. Therefore, it is not necessary to increase the width of the printer device due to the presence of the fin-shaped member or the photosensor, whereby the printer device may be compactly constituted.

An adjustment device for an auxiliary fence includes a support frame, an auxiliary fence, a guiding unit and an adjusting unit. The guiding unit guides the auxiliary fence along a longitudinal direction such that the auxiliary fence is selectively slidable relative to the support frame. The adjusting unit allows the auxiliary fence to be adjusted relative to the support frame and securely positioned. The adjusting unit includes a driving member, a securing member installed on the driving member, and an elastomeric element. When the driving member is operated, the securing member becomes disengaged from the support frame which allows the position of the auxiliary fence to be adjusted by sliding it relative to the support frame.

An automatic paper cutting device, includes: a paper reel frame for supporting the paper; and a core unit, wherein the core unit comprises a paper rolling shaft which a head portion of the paper reel rolls around, and the paper rolling shaft is connected to a cutting device. The present invention simplifies the internal structure for realizing the functional requirement that the structure are simpler and the accessories are fewer, the structure of the automatic paper cutting device is simpler, the automatic paper cutting device works more stable, the paper is outputted more smoothly, and the paper of different thickness and quality is capable of being cut automatically.

The invention relates to a device for the hydrolysis of preferably solid organic substrates, in particular of energy crops and plant residues, with a collection vessel (1) for receiving the organic substrates, with a conveying means (4) for transporting the organic substrates into a charging device (7) for the batch-wise charging of a hydrolyzer (10) with the organic substrates, the hydrolyzer (10) being provided on the output with a pressure-release device (12) having a valve-controlled pressure diaphragm (13) and a steam trap (14) arranged upstream of an expander tank (15). According to the invention, the conveying means (4) includes a conveyor worm (4') with a sleeve shaft (25), which is charged with hot steam from the steam trap (14), which is preferably designed as a cyclone, the sleeve shaft (25), in the conveying zone for the organic substrate, having, in a heating zone (18), steam-outlet openings (26) for directly charging the organic substrate with hot steam.

A method for locking a tire to a wheel rim, includes the steps of mounting a tubular tire locking element on the wheel rim, which tubular locking member is arranged with a valve, which valve is pushed through a hole in the rim; mounting a tire on the rim such that the tire encloses the tubular tire locking element and a pressure chamber is obtained between the tire locking element and the tire; pressurizing the tubular tire locking element via the valve such that it expands, whereby the beads of the tire are pressed against the flanges of the wheel rim; inserting a hollow needle through the tire and into the pressure chamber, which hollow needle is connected to a pressurized air source; pressurizing the pressure chamber to desired pressure, removing the hollow needle; and sealing the hole caused by the needle with sealing fluid or plug.

A vehicle-carried air compressor device includes a case installed with an air compressor therein, a tire repairing container containing a liquid adhesive, and a flexible linking tube. An air inlet coupler of the tire repairing container is connected with an air outlet manifold of the air compressor. An end of the flexible linking tube is coupled to an adhesive outlet coupler of the tire repairing container, and the other end of the flexible linking tube is provided with a protection adapter for coupling to a tire nipple. Before the protection adapter is connected with the tire nipple, the other end of the flexible linking tube is closed by the protection adapter, so that the liquid adhesive in the tire repairing container will not shoot out suddenly because of improper handling.

Examples of the disclosure enable the recalculation of device chaining in a user interface. In some examples, a first element representing a first hardware device is received at a design surface of a computing device user interface. A second element representing a second hardware device is received at the design surface. A selection of an output associated with the first element is received. A function that binds a property of the second element to a property of the output associated with the first element is automatically generated. Aspects of the disclosure enable the automatically generated function to be displayed at the design surface.

Embodiments of the present invention provide a software upgrade method and apparatus, and a device. The method is applied to a software upgrade of a digital television terminal and includes: obtaining a DSI table in an upgrade data stream according to location information of the upgrade data stream that is carried in an upgrade notification message, where the DSI table carries upgrade software description information; displaying the upgrade software description information and upgrade prompt information to a user if it is determined, according to the upgrade software description information, to upgrade local software; and after the user determines to upgrade software, obtaining an upgrade software mirror in the upgrade data stream, and updating the local software according to the upgrade software mirror.

Provided is an associated information generation device and the like that facilitated estimates relating to a project. The associated information generation device (101) has an associated information generation unit (102) that on the basis of project information including a task identifier is associated with a change causes are associate with the proportion at which the change causes occur identifies the change cause associated with a specific task identifier contained in project information, identifies the proportion associated with the identified change cause, and generates associated information in which the identified proportion and the identified task identifier are associated.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for placing a device in a bootloader state. One of the methods includes determining, during a boot process of the apparatus, whether a device of a particular type is connected to the apparatus, in response to determining that a device of the particular type is connected to the apparatus, determining a device identifier for the device, comparing the device identifier for the device with a predetermined identifier that indicates a device to which the apparatus should provide control of the boot process to determine whether the device identifier is the same as the predetermined identifier, and in response to determining that the device identifier is the same as the predetermined identifier, maintaining the apparatus in a bootloader state to provide control of the boot process of the apparatus to the device.

An electronic device having a flexible display and a method for operating the same are provided. The method includes displaying a first graphic user interface (GUI) for character input on a flexible display and detecting a change in a bending state of the flexible display. Changing the first GUI to a second GUI based on the detected change of the bending state of the flexible display, and then displaying the second GUI. In some embodiments, the method may include determining a moved area among the first area and the second area and displaying the second GUI based on the determined moved area and the angle between the first area and the second area. Determining the moved area may include detecting a first pressure corresponding to the first area and a second pressure corresponding to the second area, and then determining the moved area based on the first and second pressures.

The present disclosure relates to a method and device for inputting information. The method includes: establishing a network connection with a relay device; obtaining input information from the relay device, wherein the input information is received at an auxiliary input terminal and is sent from the auxiliary input terminal to the relay device; and displaying the input information at an input position on a main input terminal.

A user terminal apparatus is disclosed. The user terminal apparatus includes a touch screen which senses a multi gesture that is performed by using at least two fingers or other input tools, and a controller which provides an individual volume control mode by which a volume of one speaker apparatus is independently controllable with respect to a volume of the remainder of a plurality of speaker apparatuses, and which is convertible into a group volume control mode in order to combine a plurality of speaker apparatuses into a group such that volumes of the plurality of speaker apparatuses can be jointly controlled in response to the multi gesture sensed via the touch screen while the individual volume control mode is provided.

An output device or controller supporting voice activated commands by using a portable electronic device is herein disclosed and enabled. The output device may be a television, a controller connectable to a television, a printer, a sound output device, or a projector. The portable electronic device for wirelessly managing or driving the output device may include a microphone to receive voice activated commands. The output device includes wireless circuitry to establish a direct wireless connection (e.g., Bluetooth, etc.) with the portable electronic device, and subsequently, the output device, using the established direct wireless connection, is operable to: wirelessly receive first information from the portable electronic device; wirelessly send to the portable electronic device second information in response to receiving the first information; and wirelessly receive from the portable electronic device data related to voice activated commands from a user.

Embodiments of this disclosure relate to the field of multimedia technologies, and disclose a user interface control layout method and an electronic devices. The user interface control layout method includes the following steps: creating a relative layout container, where the relative layout container is used to contain child controls, and the child controls are a relative layout container or a normal control; specifying an attribute of a child control for the relative layout container; generating the child control; and if the child control is a relative layout container, repeating the foregoing steps, until all the child controls in the relative layout container are normal controls. In some embodiments of this disclosure, multiple UI controls of different sizes or types may be generated one by one through layout and arrangement, and the UI controls of different sizes or types may be nested with each other, and thereby UI interfaces based on different rules can be quickly implemented to meet different requirements of various products for UI control arrangement.

The present application provides a method and a device for extending a layout template of a component. The method includes determining an inheritance relationship between a component to be extended and an existing component, generating extension information of the component to be extended according to the inheritance relationship, where the extension information includes identification (ID) information of the existing component, the inheritance relationship, and content to be extended. The method further includes acquiring a layout template object of the existing component according to the ID information of the existing component, where the layout template object is configured with at least one element item of the corresponding component, and updating the element item in the layout template object according to the inheritance relationship and the content to be extended to obtain a layout template object. A layout template is extended using an inheritance relationship between objects to simplify the management of the layout templates and the complexity of maintenance and updates.

The present disclosure describes an emoji input method and a device thereof. The emoji input method may include: detecting a user operation that starts an emoji conversion function; receiving a plurality of user input words; segmenting the plurality of user input words to obtain a keyword candidate; searching for an emoji corresponding to the keyword candidate based on a mapping relationship between the keyword and emojis; and displaying the emoji.

Embodiments of the disclosure provide a method and an apparatus for capturing a screen on a mobile device, the method including: receiving, at the mobile device, a screen-capturing request for a current interface, where the current interface includes first data, and the first data includes personal information; and generating, according to screen-capturing request, a screen capture image for the current interface, where the first data in the current interface is replaced in the screen capture image with second data which is predefined. These embodiments avoid the need to manually mask an image by starting a dedicated image editing tool to anonymize a screen capture image, thereby significantly lowering the relatively high technical threshold of anonymization processing, reducing the error rate, and improving the modification quality of anonymization. Moreover, the replacement is directly made to the image while the screen is captured without interfering with normal use of reading.

A lockout device for a handle assembly includes first and second lockout members each including an outward facing base wall and outward extending first and second projections. The first and second projections of the first base member are spaced apart to receive the handle therebetween, and the first and second projections of the second base member are spaced apart to receive the handle latch therebetween. The first and second lockout members are pivotable with respect to each other to a lockout position for engagement of the base walls of the first and second lockout members with facing surfaces of a handle and a handle latch of the handle assembly. When the first and second lockout members are secured between the handle and the handle latch in the lockout position, the first and second lockout members block movement of the handle latch to prevent rotational movement of the handle assembly.

A lockout device that can be used to lock a valve in a closed position, for use particularly with valves that include a stationary member, such as a body, and a rotating member, such as a handle or wheel, for activating and deactivating the valve is disclosed. The lockout device can also be used to provide a connection point for connecting various types of connectors to a hose clamp or other elongate connecting member mounted on and locked onto a body such as a pipe or valve.

A protective device, particularly for a lock of a door or leaf, comprising a covering element which is associated slidingly with a plate that can be fixed to the door or leaf and can be positioned selectively so as to close an opening for access to the lock which is provided in the plate. Two pins are associated transversely with the plate and are adapted to block temporarily the sliding of the covering element with respect to the plate. The device has at least one cam, freely mounted rotatably within a cavity provided in the plate. At least one first recess and at least one second recess are provided in the lateral surface of the at least one cam, which have, in plan view, a mutually different shape and are adapted respectively to allow and prevent the sliding of the covering element.

A security device for securing an item, the security device comprising a housing configured to house a circuit board comprising electronics configured to send a telecommunication signal to a receiver when the electronics is activated; a cable configured to establish a conductive path with the circuit board when the housing is closed, thereby activating the electronics; a lock assembly configured to be activated when the housing is closed; and a cover configured to close the housing, the cover having a first pin configured to engage a first end of the cable to prevent removal of a first end of the cable from the housing when housing is closed, and the cover having a second pin configured to activate the lock assembly to prevent removal of a second end of the cable from the housing when the housing is closed.

Falling latch locking device having a first locking device casing that includes a handle, a closing element and a lock, and having a second locking device casing that includes a cut-out for receiving the closing element in the closed state, wherein the lock comprises a stop that can be moved by locking and unlocking the lock and in the locked state the stop blocks the opening of the handle.

A motor cover (80) includes an edge portion (84) located outside an inner side surface of a frame cover (20) with the motor cover (80) being disposed inside a housing chamber (12), configured to push the frame cover (20) wider when the frame cover (20) is mounted onto a frame (10), and configured to be pressed by the frame cover (20) from an opened surface of the frame (10) with the frame cover (20) being mounted on the frame (10).

An anti-theft mechanism for electronic devices includes an upper protecting frame and a lower protecting frame. The upper and lower protecting frames of the embodiment provide protection for the 3C products, and the first and second assembling space of the upper and lower protecting frames provide adjustable dimensions to be suitable for different sizes of 3C products. The upper and lower protecting frames can further be provided with a locking mechanism to limit the movement of the positioning member after the upper and lower protecting frames being attached onto the 3C products, which prevents the upper and lower protecting frames from being removed easily. Furthermore, with the steel wire of the locking mechanism can be attached to a secured object to secure the upper and lower protecting frames.

The invention relates to an antitheft device (2) for the steering column of a vehicle, comprising: a locking portion (6) including a bolt for locking the steering column, and a mobile member (22) capable of controlling the locking-in-position of the bolt; and an access portion (4) including a latch and carrying a pivoting rocker arm (34) bearing against the mobile member (22) and against the locking portion (6).

A manacle configured to detain or arrest a person by placing pressure on a spring-loaded handle which closes a clamp. The clamp dynamically adjusts to the wrist size of a target individual or subject. When the clamp is open, the first end and the second end are systematically disposed on either side. When the clamp is closed around the wrist of an individual, they provide a maximum gripping force capable of detaining the individual from movement. Furthermore, the ratchet portion of the tool allows for the device to close around a wrist in an adjustable fashion, meaning the tool will automatically adjust to the circumference of an individual's wrist upon deployment.

An asset retention device, including: a housing including a base portion and a cap portion, the base portion and the cap portion containing a plurality of electrical contacts; and an asset attachment structure securely coupled to the cap portion and making electrical contact with the plurality of electrical contacts, thereby completing an electrical circuit through the asset attachment structure and the housing; wherein, if the continuity of the asset attachment structure is broken, the electrical circuit is broken. The base portion of the housing is configured to be selectively coupled to a main console including a controller/processor operable for detecting a break in the continuity of the asset attachment structure and the associated electrical circuit. The asset retention device also includes an identifying chip. The asset attachment structure includes a plurality of hooked ends that extend through channels manufactured into an interior portion of the cap portion of the housing.

A fingertip mountable shaving device is provided by a flexible and breathable substrate layer including a first shaving surface, and a second adhesive surface opposite to the first shaving surface. The first shaving surface includes a plurality of rubber strips along the vertical peripheral edge and a plurality of blade assemblies affixed at predetermined locations. The blade assemblies of include a vertical stack of a plurality of rotary blades of different diameters alternately interspaced by spacers and having a hemi-spherical protective cap with a vertical stem, on the top. The second adhesive surface is coated with an adhesive suitable for temporarily mounting the device on a fingertip and is covered with a releasably connected protective peel off layer. The device can safely and closely shave hair from the face and other difficult to reach body surfaces, such as within the ear or nostrils.

A multiple slicing device includes a frame including a receptacle and a plurality of cutting elements, and a working portion including an activation mechanism, a cam mechanism, and a forcing member. The activation mechanism can include two handles where moving one of the handles toward the other handle collapses the forcing member via the cam mechanism, onto a food item placed in the receptacle between the forcing member and the cutting elements, to efficiently and simultaneously cut or slice the food item into multiple pieces.

A cutting device includes a cutting unit having a rotary blade, a table for placing a workpiece thereon, and a support device vertically movably supporting the cutting unit relative to the table. The cutting unit includes a blade case. The blade case covers an upper portion of the rotary blade and has a dust discharge member for discharging dust produced at a cutting region. The cutting device further includes a dust guide device disposed on at least one of an upstream side and a downstream side of the dust discharge member with respect to a flow of the dust. A position of at least a part of the dust guide device changes relative to the dust discharge member according to change of the vertical position of the cutting unit.

An oil supply device for a crankcase of an internal combustion engine feeds oil from a reservoir to a main oil duct of the crankcase. A filter switching device allows a selection from a plurality of oil filter units in the flow path of the oil to be selectively connected into the oil flow path, to set a proportion of the oil filter units to active and a proportion of the oil filter units to passive. A switching unit switches between the active and passive states and opens up a pressurized oil flow path to the active oil filter unit(s) and also a drainage flow path between the passive oil filter unit(s) and a drainage duct. An evacuation device drains or evacuates oil from the drainage duct which has accumulated at the passive oil filter unit(s).