An anesthesia workstation includes a sliding track system attached to the front of the anesthesia workstation for the mounting of one or more displays. The displays are horizontally slidable along the front of the anesthesia workstation along the sliding track. In addition, the sliding track system includes pivot points which enable outward pivoting of the displays up to 90 degrees. Sliding and pivoting of the displays is possible both independently and simultaneously. The sliding track system allows the anesthetist to slide and pivot the displays across the front of the workstation along the length of the track to the most preferable viewing position. Additional storage space is positioned within the anesthesia workstation behind the displays and becomes exposed and accessible when the displays are manipulated via the sliding track system.

A cabinet drawer includes a molded drawer floor having a central portion including at least one depression, each depression having a bottom wall and a sidewall having an inner surface and an outer surface. A flange extends outwardly from an upper edge of each depression. A plurality of webs extends outward from each depression outer surface for connection with a drawer slide system. A peripheral edge of the flange includes a plurality of deflectable tabs for coupling to a surrounding fence without the use of fasteners. The fence includes a skirt portion extending downward from the drawer floor flange to hide any drawer slide mechanism coupling the drawer floor to any underlying base.

An assembly for securing at least one rail to a substrate has a longitudinally extending rail plate extending across and secured underneath the rail and having a pair of opposite ends. Respective end restraints at the ends of the rail plate each have a jaw fixed to the respective end of the rail plate and each formed with a vertically throughgoing passage. A respective rigid anchor hood is fixed to the substrate in each of the passages with an outer surface of the anchor hood spaced inward from an inner surface of the respective passage and forming an annular space therewith. A respective rubber bumper mass fills each of these spaces so that forces transverse to the rail are transmitted through the bumpers to the anchor hoods.

A method of making an electrical connection to a railroad rail includes fastening a wire bonding assembly to a railroad rail, the wire bonding assembly including first and second spaced apart washer plates contacting the rail and a metal bar supported by the washer plates. The metal bar is electrically connected with the rail with a first conductive lead contacting a selected point on the rail and a selected point on the metal bar. A second conductive lead is connected to another selected point on the metal bar for establishing an electrical connection to the rail from an electrical device.

A system comprises a structure having particles embedded at a level within the structure, and X-ray imaging apparatus for capturing images of the particles at the level.

The subject disclosure is directed towards automated processes for generating sentence completion questions based at least in part on a language model. Using the language model, a sentence is located, and alternates for a focus word (or words) in the sentence are automatically provided. Also described is automated filtering candidate sentences to locate the sentence, filtering the alternates based upon elimination criteria, scoring sentences with the correct word and as modified the alternates, and ranking the alternates. Manual selection may be used along with the automated processes.

A test buck, a test buck system and related method are disclosed. The test buck system may comprise a controller and a test buck. The test buck may include a portable bed, a seat module mounted to the bed, and a first OIM disposed on the bed. At least a portion of the first OIM may be selectively moveable in at least four degrees of freedom, up to six degrees of freedom. The controller may be electrically connected to a first Operator Interface Module (OIM). The controller may be configured to selectively move at least a portion of the first OIM in at least four to six degrees of freedom.

A wearable cardiopulmonary resuscitation assist device or system including: a wearable article to be worn by a cardiopulmonary resuscitation performer or a patient, for assisting administration of cardiopulmonary resuscitation by the performer; at least one sensor for measuring at least one parameter to assist in cardiopulmonary resuscitation; at least one feedback component for conveying feedback information based on the parameter to the performer for assisting the performer in performing cardiopulmonary resuscitation; and a processing unit, the processing unit being configured to receive the at least one parameter from the at least one sensor and to send information based on the parameter to the at least one feedback component. Also a method for training or improving cardiopulmonary resuscitation procedures using the device.

The present invention relates to a wireless transmission system for signals intended more specifically for a domestic environment. It includes a central terminal comprising at least m transmission channels and n directive transmission antennas intended to transmit first signals at least one client terminal having at least one reception channel connected to a reception antenna in order to receive the first signals said central terminal and said client terminal communicating in a transmission channel having a predetermined frequency band, and an estimation device able to generate an item of information representative of the reception quality of first signals in at least one point of a predetermined geographic zone associated with the client terminal and a return channel in order to transmit said at least one item of information to the control means of the central terminal.

In some embodiments, a method for processing output of at least one microphone of a device (e.g., a headset) to identify at least one touch gesture exerted by a user on the device, including by distinguishing the gesture from input to the microphone other than a touch gesture intended by the user, and by distinguishing between a tap exerted by the user on the device and at least one dynamic gesture exerted by the user on the device, where the output of the at least one microphone is also indicative of ambient sound (e.g., voice utterences). Other embodiments are systems for detecting ambient sound (e.g., voice utterences) and touch gestures, each including a device including at least one microphone and a processor coupled and configured to process output of each microphone to identify at least one touch gesture exerted by a user on the device.

Gesture based interaction with traffic data is disclosed. A virtual broadcast presentation may be generated based on dynamic information such as traffic information, weather information, or other information that may be featured on a virtual broadcast presentation. A gesture made by a user is detected and processed to determine an input command associated with the detected gesture. The virtual broadcast presentation may be manipulated based on the input command.

Disclosed is a fabric for an airbag including a polyester fiber, and particularly to a polyester fabric for an airbag of which toughness is 3.5 to 6.0 kJ/m3 and tearing strength measured according to the ASTM D 2261 TONGUE method is 18 to 30 kgf, wherein the fabric includes polyester fiber of which toughness is 70 to 95 J/m3, a method of preparing the same, and an airbag for a car including the same.

An electrically powered mining vehicle including a frame rollingly supported on a surface for movement over the surface. An electric motor is coupled to the frame for proving power to the vehicle. A cable is electrically coupled to the electric motor for supplying electricity thereto and a cable management system is coupled to the frame and arranged to receive and payout the cable as the vehicle moves over the surface. A sheave bracket is coupled to the frame and arranged to direct the cable into the cable management system and includes a lower plate arranged substantially horizontally, a plurality of vertical rollers that are coupled to the lower plate and are arranged to guide the cable into the cable management system, and a horizontal roller that is coupled to the lower plate and arranged to elevate the cable above the lower plate.

A water delivery system is provided, comprising at least one faucet device with a cold water faucet part and a hot water faucet part, a cold water line to the at least one faucet device, a tankless heater device for heating water, a hot water line having a first portion running from an outlet of the tankless heater device to the at least one faucet device and having a second portion running from the at least one faucet device to an inlet of the tankless heater device, and a circulatory pump arranged in the second portion of the hot water line, wherein the circulatory pump has a prefixed first performance level and a prefixed second performance level, wherein the first performance level causes a finite water flow in the hot water line which is below an operation threshold value of the tankless heater device.

A domestic combined heat and power system including a power unit, a heat-storage tank which receives waste heat of the power unit for storing heat in direct water, and a main heat exchanger connected to the heat-storage tank, being heated by a burner so as to use the water as hot water. A waste-heat heat exchanger filled with a heat-transfer medium is installed between the power unit and the heat-storage tank such that a waste-heat pipe is arranged in the form of a coil at one side inside the waste-heat heat exchanger, and a heat-storage pipe of the heat-storage tank is arranged in the form of a coil at the other side. Waste heat of the power unit is indirectly heat exchanged to the heat-storage tank through the heat-transfer medium. Costs and waste of energy consumption are reduced, and there is sharing of functions that are duplicated across the heat-storage tank.

A livestock guide and manipulator panel prod is disclosed by this invention wherein electronic shocking circuitry is provided in combination with a hand-held livestock guiding and directing panel having electronic prods of said circuitry arranged on the surface of the panel.

An electrified livestock controller for guiding animals, preferably pigs, doubles as a gate and a prod. The controller comprises a central panel of generally planar dimensions, comprising a plurality of central, vertically disposed ribs separated from one another by elongated slots. One or more similar accessory panels are hingedly connected to each side of the central panel. The hinge structure facilitates adjustment of the controller for deployment in a variety of configurations. The hinge structure comprises a detent system having a plurality of indexing disks which, when yieldably mated together, facilitate positioning of the panels in a custom configuration. Suitable flush mounted electric strips are defined on all of the ribs, to provide a shocking effect without tissue damage. The system includes a removable cattle prod which, besides functioning as a handle, can be withdrawn from the handle to separately prod animals. Either concurrently with or independently of rib electrification, audio and/or visual effects may be generated to cause Pavlovian conditioning in the animals. A preferred visual effect of ascending motion, which may be induced by a revolving curtain displaying a spiral image, motivates the animals like a prod. The curtain is best operatively disposed behind the vertical ribs of at least one of the panels.

These and other objectives are obtained by a hand-held apparatus for use in harvesting earthworms using a source of electrical energy having a positive terminal and a negative terminal. The apparatus has a body which has a bottom surface. The apparatus has a positive contact connected to the positive terminal and a negative contact connected to the negative terminal. A first electrically conductive wire runs from the positive contact along the bottom surface to a first terminus point and a second electrically conductive wire running from the negative contact along the bottom surface to a second terminus point, wherein the conductive wires are exposed along the bottom surface. The first electrically conductive wire and the second electrically conductive wire are in contact with the earthworm and supply an electrical current sufficient to immobilize the earthworm.

A battery operated hand held device for use in handling or controlling livestock, particularly cattle, swine, sheep and horses. This invention provides a novel alternative to conventional electric livestock prods, which deliver an electric shock to the animal. While operating on the principle of external stimulus to invoke a flight response, this invention relies on vibration and/or sound rather than painful electric shock. This unique mode of action satisfies the needs in the livestock industry for low stress handling equipment and techniques with the welfare of the animal as a priority.

A device designed to prod livestock is intended to create an audible sound to aid in the controlled movement of animals. The device takes the form of a long pole comprising an upper end provided with a comfortable handle and a wrist strap and a lower end provided with a whistle. To use, the user would hold the device by the handle in one hand and whip it in a fast, circular motion, causing the whistle to make a sound. When done near an animal, the sound will cause the animal to move away, thus allowing the user to control the movement of the animal. The device is suitable for use by farmers, ranchers, auctioneers, herdsmen, or anyone who loads or moves livestock.

A filament winding apparatus prevents a fiber bundle supplied to a liner from interfering with other fiber bundles and fiber supplying guides. First and second guide units include a plurality of fiber supplying guides arranged radially and extending and contracting in a direction approximately perpendicular to a liner central axis. When a fiber bundle supplied from a first supplying guide of the first guide unit crosses between a second supplying guide of the second guide unit and the liner, the distance from the second supplying guide to the liner central axis is made larger than the distance from the first supplying guide to the liner central axis, and in the reverse case, the distance from the first supplying guide to the liner central axis is made larger than the distance from the second supplying guide to the liner central axis.

Biosensor apparatus and associated method for detecting a target material using a vibrating resonator having a surface that operably interacts with the target material. A detector is in electrical communication with a sensor, the sensor comprising a first paddle assembly connected to a second paddle assembly, the first paddle assembly having at least one microbalance sensing resonator proximate a proximal end and at least one sensing electrical contact proximate a distal end in electrical communication with the sensing resonator. The at least one sensing resonator has a target coating for operably interacting with the target material, and the second paddle assembly has a microbalance reference resonator proximate the proximal end and at least one reference electrical contact proximate the distal end in electrical communication with the reference resonator.

An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.

A test strip ejector system for receiving and ejecting a fluid testing medical device test strip includes a mechanism assembly supported by the device whereby user actuation of the mechanism assembly induces displacement of the test strip in at least a test strip ejection direction to eject the test strip. The mechanism assembly includes a power source and an electric motor such as a piezo-electric linear micro motor connected to the power source. The electric motor has an armature displaced when the electric motor is energized. A digital display/user interface is provided. Selection of an ejection function presented on the digital display/user interface initiates operation of the electric motor and displacement of the armature thereby displacing the test strip in the ejection direction. An operating system including a microprocessor is connected to the display/user interface. The microprocessor controls direction of operation and operating speed of the motor.

A method of forming a 3-phenylimino-3H-phenothiazine or a 3-phenylimino-3H-phenoxazine mediator includes providing a first reactant including phenothiazine or phenoxazine, providing a first solvent, providing a second reactant and providing a second solvent. The first reactant, first solvent, second reactant and second solvent are combined to form a reactants solution. Sodium persulfate is added to the reactants solution to couple the first and second reactants resulting in a reaction solution including the 3-phenylimino-3H-phenothiazine or the 3-phenylimino-3H-phenoxazine mediator.

A towable soil pulverizer having a center section and foldable wings mounted by hinges on opposite sides of the center section to fold upwardly or downwardly about substantially longitudinal hinge axes. Each hinge has a spaced ball joint and guide roller in roller slot. A wing float axis for each wing extends substantially perpendicular to the longitudinal hinge axis in a transverse direction, each wing also being pivotal about the float axis. The hinge design with the float axis prevents weight transfer between the center section and wing sections when the pulverizer operates over uneven soil, providing uniform soil conditioning over the width of the pulverizer. The center section rollers are positioned ahead of, behind, or co-linear with the wing rollers. Lockout kits are provided for mounting in the roller guide slots for restricting motion.

An articulated cutting head and conveyor mount for sod harvesting machines. The invention provides a linkage design that can provide many benefits including: allowing the operator to see the cutting operation, enabling the high lifting of the cutting head for service and maneuvering, managing the vertical bending load of the ground reference roller, providing high transverse stiffness, maintaining the position of the conveyor relative to the cutting head. The linkage design can include fewer parts than previous designs while still being robust and durable. As such, cutting heads employing the linkage design of the present invention can produce higher quality slabs with less service and maintenance than when using current designs.

The present invention extends to a stacking mechanism having electrical actuators for stacking slabs of sod on a sod harvesting machine. The electrical actuators allow the stacking head to be driven in three axes. The stacking mechanism also includes position feedback sensors for reporting the position of the stacking head to enable precision when operating the stacking head at a fast rate. The stacking mechanism of the present invention also provides temporary pallet support wings to enable the continued stacking of slabs of sod on one pallet even while another pallet is being dropped from the sod harvesting machine.

A display device includes a pixel portion including a plurality of pixels each including a first transistor, a second transistor, and a light-emitting element, in which a gate of the first transistor is electrically connected to a scan line, one of a source and a drain of the first transistor is electrically connected to a signal line, and the other of them is electrically connected to a gate of the second transistor; one of a source and a drain of the second transistor is electrically connected to a power supply line and the other of them is electrically connected to the light-emitting element, and the first transistor includes an oxide semiconductor layer. A period when the display device displays a still image includes a period in which output of a signal to all the scan lines in the pixel portion is stopped.

A deployment guiding cloth is wound from an outside in the vehicle width direction, on an outer peripheral portion of a folded side airbag. This deployment guiding cloth extends toward a vehicle front side and is interposed between the side airbag that is partially deployed and a vehicle cabin side portion (a center pillar garnish and a door trim) before the side airbag is fully deployed.

A pre-weakened cover of an airbag module is provided including a layer having an outer show surface and an opposing inner surface. A plurality of first cuts is arranged at a first angle on the inner surface. A plurality of second cuts is arranged at a second angle on the inner surface. Each of the second cuts intersects two adjacent first cuts to form a generally V-shaped pattern.

An airflow-organization testing method for a clean room and a system using the same method are disclosed. The airflow-organization testing method for a clean room uses a thermal imaging device to detect a sample gas-flow formed by a sample gas in the clean room, and the sample gas has a temperature difference from ambient air. The airflow-organization testing system for a clean room includes a sample gas supplier and a thermal imaging device, and the thermal imaging device can continuously detect a spatial position of the sample gas and display it on a display, thereby improving detection precision and expanding detection range.

A system of investigating aberrations in a charged particle lens system, wherein a charged particle beam is directed from a multitude of directions through a pivot point on a sample stage. An image figure is recorded for each of multiple focus settings at each beam direction setting, creating a set of registered images. This set of images is compared to reference images to derive aberrations present in the lens system without the use of an amorphous sample present.

A tape feeder includes a guide part that guides a carrier tape and is detachably attached to a main body. The guide part includes: a lower member guiding the carrier tape and attached to and detached from the main body; an upper member pressing down the carrier tape from above; a tape introduction part guiding the carrier tape into the upper member at an upstream side thereof in a tape feed direction; a confirmation opening part disposed in the upper member for visually confirming that the carrier tape arrives at a pin engagement range; an open/close mechanism opening and closing the upper member with respect to the lower member; and a positioning mechanism fitting a positioning pin into a feed hole of the carrier tape in the guide part, thereby positioning the carrier tape relative to the guide part in the tape feed direction.

In a method of transmitting a data stream from a transmitter in a multiple-input-multiple-output (MIMO) wireless communication system, where the transmitter comprises a plurality of transmit antennas, a discrete Fourier transform (DFT) is applied to the data stream to generate a plurality of symbol sequences; symbols of a first symbol sequence from the plurality of symbol sequences are paired with symbols of a second symbol sequence from the plurality of symbol sequences to generate a plurality of symbol pairs, wherein the pairing results in an orphan symbol; a space-time block code (STBC) is applied to the symbol pairs to generate a plurality of sets of STBC symbols, each set of STBC symbols being associated with a corresponding one of the plurality of antennas; a cyclic delay diversity (CDD) operation is applied to the orphan symbol to generate a plurality of CDD symbols, each CDD symbol being associated with a corresponding one of the plurality of antennas; and each one of the antennas transmits the corresponding set of STBC symbols and the corresponding CDD symbol.

A packaging box with test strips is provided for a gripper to grip the test strips, and the gripper has a gripping section and a conductive terminal in the gripping section, and the packaging box includes a main body and a test strip. The main body has an embedded groove including a port with a shape corresponding to the shape of the gripping section, and the port is provided for inserting the gripping section. The test strip has a conductive area defined on a surface of the test strip, and the test strip is contained in the embedded groove, wherein the gripping section is coupled to the port, and the conductive terminal is electrically coupled to the conductive area. With the packaging box, the test strips can be taken out conveniently and quickly.

The test fixture includes a housing, a first grip, and a second grip. The first grip and the second grip are each configured to clamp onto an upper surface and lower surface of a material coupon. The test fixture also includes an upper input jaw and a lower input jaw each configured to clamp onto the material coupon near a center of the upper surface and the lower surface of the material coupon. The test fixture is configured to load the material coupon in a first direction and a second direction. The first grip and the second grip are each configured to clamp onto the material coupon at a location which accordingly results in a desired testing ratio regardless of a variation in thickness of the material coupon.

A carbon exchanging system for a carbon-arc weather resistance testing apparatus having a carbon drive system including a reversible motor for automatically moving upper and lower arc producing carbons toward and away from each other along a vertical line for keeping the discharge current and voltage substantially constant. The carbon exchanging system has remotely operable upper and lower carbon chucks for holding the upper and lower carbons, a carbon replacing device having a remotely operable exchanging chuck and a drive for moving the exchanging chuck along a path of movement toward and away from the upper and lower carbon chucks when they are in position on the vertical line, a shifting device for shifting the carbon drive system and the carbon replacing means relative to each other for moving the upper and lower chucks and the exchanging chuck laterally relative to the vertical line, a carbon supply adjacent the path of movement of the exchanging chuck for holding replacement carbons and moving them into position opposite a position of the exchanging chuck along the path, and a moving device for moving the exchanging chuck and the carbon supply relative to each other in a direction toward and away from each other. The system can also include a control device for automatically controlling the operation thereof.

Apparatuses, methods and systems for lighting fixture determining its power usage and monitoring its operational health are disclosed. One embodiment includes a method of a lighting fixture determining its power usage. The method includes sensing, by an ambient light sensor, an intensity of light emitted from the lighting fixture, and estimating power usage of the lighting fixture based on the sensed intensity of light.

A pedestrian-friendly forward structure of a motor vehicle includes a grill opening reinforcement (GOR), a front fascia located forward of and spaced from the GOR, and a support bracket extending transversely to the vehicle forward of the GOR and rearward of the front fascia. The support bracket has a transverse cross-bar and left and right legs extending rearward from a cross-bar adjacent opposite ends thereof. The legs are attached to respective outboard positions on the GOR, and the cross-bar has an upper flange underlying an upper rear panel of the front fascia. If a pedestrian strikes the forward structure, the fascia and support bracket yield rearward in an injury-reducing manner.

A deployable pedestrian protection lower leg stiffen apparatus includes a left and a right linear actuator mountable adjacent to respective left and right forward frame members of a vehicle and a lower leg stiffener attached to and movable by the actuators. The actuators are extendable along respective deployment axes extending forward and downward relative to the vehicle to move the stiffener between a retracted position rearward of a forward surface of a front bumper beam and above a ground clearance plane and a deployed position forward of the retracted position and below the ground clearance plane. The actuators have rotational joints defining a horizontal pivot axis about which at least the forward portions of the piston may rotate upward along with the stiffener to prevent damage to the system if it strikes a road obstacle.

A fascia support structure and aerodynamic shutter assembly for a vehicle includes a fascia support structure, comprising: a top portion comprising a substantially U-shaped body comprising a top fascia support member, a first side fascia support member and a second side fascia support member, the first side fascia support member having a first side baffle, the second side fascia support member having a second side baffle; and a bottom portion comprising a bottom baffle, the bottom portion attached to the first and second side fascia support members, the top portion and the bottom portion comprising a fascia support structure opening, at least one of the first side baffle, second side baffle or bottom baffle having a seal member disposed on a leading edge. The assembly also includes an aerodynamic shutter system comprising a shutter frame having a shutter frame opening and a plurality of rotatable shutters disposed therein.

A system for protecting a pedestrian during impact with a vehicle, the system having a bumper adapted for attachment to an end of the vehicle, wherein the bumper is comprised of a plurality of air sacs, wherein the bumper has a horizontal thickness extends from the end of the vehicle, wherein at least some of the plurality of air sacs stretch and then burst during impact between the bumper and a pedestrian causing deceleration along the horizontal width of the bumper during the impact, wherein the bumper undergoes plastic deformation during impact with the pedestrian as the at least some of the air sacs burst during impact, and wherein the bursting of some of the plurality of air sacs reduces spring back of the bumper on the pedestrian.

A fascia support structure and aerodynamic shutter assembly for a vehicle includes a fascia support structure, comprising: a top portion comprising a substantially U-shaped body comprising a top fascia support member, a first side fascia support member and a second side fascia support member, the first side fascia support member having a first side baffle, the second side fascia support member having a second side baffle; and a bottom portion comprising a bottom baffle, the bottom portion attached to the first and second side fascia support members, the top portion and the bottom portion comprising a fascia support structure opening, at least one of the first side baffle, second side baffle or bottom baffle having a seal member disposed on a leading edge. The assembly also includes an aerodynamic shutter system comprising a shutter frame having a shutter frame opening and a plurality of rotatable shutters disposed therein.

An ice dispenser for a domestic refrigerator includes a lever having a housing with a passageway defined therein and a flapper door configured to pivot between a closed position in which ice is prevented from advancing into the passageway and an open position in which ice is permitted to advance into the passageway. A linkage is coupled to the lever and the flapper door such that movement of the lever causes the flapper door to move from the closed position to the open position.

A lid lock controller includes a lid lock unit operable in a lock state, which keeps the lid closed, and an unlock state, which allows for the lid to open. A detection unit detects an unlocking operation performed on the lid lock unit. A key check unit checks whether or not an electronic key is located in the vicinity of the vehicle through wireless communication between the vehicle and the electronic key when the unlock operation is detected. An unlocking unit switches the lid lock unit to the unlock state when the electronic key is located in the vicinity of the vehicle. The unlocking unit switches the lid lock unit to the unlock state even when the electronic key is not located in the vicinity of the vehicle as long as a further lid unlock condition is satisfied.

A headrest assembly (1) for an ejection seat, comprising: a support mounting (2); and a pair of inflatable side beams (3), each attached at one end to the support mounting and spaced apart from one another, the side beams (3) being configured to be inflated from a stowed configuration to a deployed configuration in which the side beams extend from the support panel, the side beams (3) configured to deploy through: a capturing phase, during which the side beams are partially inflated from the stowed configuration such that they extend outwardly and upwardly from the support mounting and away from one another to surround the head of an occupant of the ejection seat toward a central location with respect to the support mounting.

An actuation system and method includes a tubular defining a passage, and an assembly disposed with the tubular. The assembly includes a restriction operatively arranged to receive a restrictor for enabling actuation of the assembly. The restriction includes a degradable material with a protective layer thereon, the degradable material degrading upon exposure to a fluid in the passage and the protective layer isolating the degradable material from the fluid.

Described herein is a safety restraint mechanism for a mast assembly. The safety restraint mechanism comprises a tension line attached to a lever and a winch mechanism such that operation of the winch mechanism translates a carriage assembly along the mast. A cam brake including an engagement profile at a first end thereon is pivotally attached to the lever at a second end. The cam brake is also pivotally attached to the carriage assembly such that the engagement profile pivots into a brake position or a free lift position relative to a tension force acting on the lever. The lever is pivotally attached to the second end and includes a kickstand. The engagement profile having a protruded portion to abut the tubes in a brake position and a relief portion to space the cam brake from the tubes in a free lift position.

A field-installable pulling eye and a method for providing and using the same are disclosed. The pulling eye comprises a bolt, a sleeve, and a collet. The sleeve has a hollow interior defining a cavity configured to receive the collet through an open end, and an aperture passing from the exterior of the sleeve to the cavity at the opposite end. The bolt has a head portion and a threaded shaft configured to pass through the aperture and engage a complementary threaded orifice at one end of the collet. The collet has two or more jaws extending from the opposite end that are configured to exert a compression force the terminal end of a conductor inserted between the jaws as the collet is drawn into the cavity of the sleeve by tightening the bolt.