More than a month since officials closed schools due to Covid-19, California leaders said a two-week blitz led by First Partner Jennifer Siebel Newsom has brought in 70,000 computers and other devices that will be distributed to needy students this week. Gov. Gavin Newsom has stressed the importance of distance learning and education multiple times during the past month—even talking about helping his own children with school work.…

Prepare for a May Day like no other. When Bay Area counties imposed stay-at-home orders to limit the COVID-19 epidemic, Richmond resident Blanca Retano lost her job as a parent educator at an elementary school. Her husband, a chef, had his hours cut to nine a week.…

An electrical voltage-generating piezoelectric device comprising at least a first blade (1) with a curved portion (10) defining a first arm (11) and a second arm (12) of the blade, the first arm (11) being intended to be fastened to a fixed support, the second arm (12) being substantially flat and having a free end (120) designed to oscillate around its resting position under the effect of mechanical force, at least one piezoelectric element (31) resting upon one of the main surfaces (14) of the second arm (12) of the first blade. The device also includes a second blade (2) identical in structure to the first blade (1), the first arms (11, 21) of the first and second blades (1, 2) being fastened together on all or part of their surfaces and being fixed relative to each other.

An acoustic resonator and a method of manufacturing the same are provided. An acoustic resonator includes a resonating part disposed on a substrate, a cap accommodating the resonating part and bonded to the substrate, and a bonded part bonding the cap and the substrate to each other, the bonding part including at least one block disposed between a bonding surface of the cap and a bonding surface of the substrate to block a leakage of a bonding material that forms the bonded part during a bonding operation.

An acoustic resonator and a method of manufacturing the same are provided. The acoustic resonator includes a resonating part including a first electrode, a second electrode, and a piezoelectric layer; and a plurality of seed layers disposed on one side of the resonating part.

An acoustic resonator structure comprises: a substrate having a cavity, which has a plurality of sides; a first electrode disposed over the cavity; a piezoelectric layer disposed over a portion of the first electrode and extending over at least one of the sides; and a second electrode disposed over the piezoelectric layer, an overlap of the first electrode, the piezoelectric layer and the second electrode forming an active area of the FBAR. The active area of the FBAR is completely suspended over the cavity.

In a method of manufacturing a piezoelectric device in which a piezoelectric thin film on which functional conductors are formed is fixed to a support substrate by a fixing layer, an alignment mark is formed on one main surface of a light-transmitting piezoelectric substrate. A sacrificial layer is formed on a main surface of the piezoelectric substrate with reference to the alignment mark and the fixing layer is formed so as to cover the sacrificial layer and is bonded to the support substrate. The piezoelectric thin film is formed by being separated from the piezoelectric substrate and the functional conductors are formed on the surface of the piezoelectric thin film with reference to the alignment mark. The piezoelectric device is able to be manufactured while positions of formation regions of conductors are adjusted efficiently.

A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.

A system and method provides a piezoelectric stack arrangement for reduced driving voltage while maintaining a driving level for active piezoelectric materials. A stack arrangement of d36 shear mode single crystals of both air X-cut and Y-cut ±1:45° (±20°) arrangement are bonded with discrete conductive pillars to form a shear crystal stack. The bonding area between the neighboring crystal parts is minimized. The bonding pillars are positioned at less than a total surface are of the single crystal forming the stack. The stack fabrication is facilitated with a precision assembly system, where crystal parts are placed to desired locations on an assembly fixture for alignment following the preset operation steps. With the reduced clamping effect from bonding due to lower surface coverage of the discrete conductive pillars, such a piezoelectric d36 shear crystal stack exhibits a reduced driving voltage while maintaining a driving level and substantial and surprisingly improved performance.

A MEMS piezoelectric device includes a monolithic semiconductor body having first and second main surfaces extending parallel to a horizontal plane formed by first and second horizontal axes. A housing cavity is arranged within the monolithic semiconductor body. A membrane is suspended above the housing cavity at the first main surface. A piezoelectric material layer is arranged above a first surface of the membrane with a proof mass coupled to a second surface, opposite to the first surface, along the vertical axis. An electrode arrangement is provided in contact with the piezoelectric material layer. The proof mass causes deformation of the piezoelectric material layer in response to environmental mechanical vibrations. The proof mass is coupled to the membrane by a connection element arranged, in a central position, between the membrane and the proof mass in the direction of the vertical axis.

An electric machine of a motor vehicle, in particular of an adjustment drive or of a radiator fan, has a rotor which is mounted so as to be rotatable about a machine axis. The rotor has a number of permanent magnets which are arranged in the radial direction. Each permanent magnet has one side with a strong magnetic flux and one side with a weak magnetic flux in the tangential direction. When the permanent magnets are adjacent in the tangential direction, different sides are directed towards one another.

Raw material magnet is milled to magnet powder, and the magnet powder thus milled is mixed with a binder to form a compound 12. Then, the compound 12 thus formed is molded to a green sheet 14 having a sheet shape. Thereafter, a magnetic field orientation is carried out by applying a magnetic field to the green sheet 14 thus molded, and then, the green sheet 14 having been subjected to the magnetic field orientation is shaped to a product shape by deforming thereof. Thereafter, the permanent magnet 1 is produced by sintering thereof. The permanent magnet 1 has a ring shape, and is constituted such that an axis of easy magnetization may be orientated at a slant so as to converge in a direction along a converging axis P which is set to a radius direction as well as to a center direction of the ring shape.

An electric motor includes a stator operable to produce a magnetic field and defining an opening, and a rotor at least partially disposed within the opening. The rotor includes a shaft extending along a rotational axis, a first rotor magnetic core portion including a plurality of laminations stacked contiguously on the shaft, and a second rotor magnetic core portion coupled to the plurality of laminations. The first rotor magnetic core portion and the second rotor magnetic core portion cooperate to define the rotor magnetic core. A plurality of windings is coupled to the rotor magnetic core and an air flow path is formed as part of the second rotor magnetic core portion. The air flow path includes an axial portion that passes through the shaft axially along the rotational axis and a radial portion that extends radially outward through the second rotor magnetic core portion.

A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a shaft having a lower end fixed to the base portion, and arranged to project upward along the central axis; a circuit board; a coil portion; a bearing portion; a rotor holder; a magnet portion; an eccentric weight; a cover portion; and a motor electrode portion electrically connected to the circuit board, and arranged to project downward below a lower surface of the base portion. The entire base portion and the entire circuit board are arranged inside of an outer circumferential edge of a lower end of the cover portion.

Provided are a rotor, a manufacturing method of the rotor, and a DC motor including the rotor, the rotor including: a core around which a winding is wound, the core being rotatable integrally with a shaft; a commutator being fixed to the shaft and having a terminal to be connected to one end of the winding; and a conduction plate being externally fitted onto the shaft via an insulator part between the terminal of the commutator and the core, the conduction plate having a connection part to be connected to the other end of the winding, wherein an axial direction position of the connection part is set in an intermediate portion that is between a winding projection of the winding and the terminal.

Methods and systems for using the Earth's magnetic field to power a machine having a motor, the system including a computer, a plurality of wires, a plurality of energy storing devices, all in controlled electrical communication with each other, wherein the plurality of wires can collect electrical energy from the Earth's magnetic field while the machine is put in motion by a power source powering the motor, wherein the collected electrical energy is stored in the plurality of energy storing devices or used to power the motor.

The present invention relates to a triboelectric energy harvesting device and a method for manufacturing the same. The triboelectric energy harvesting device according to an embodiment of the present invention includes a first frictional layer provided with a first surface having first electron affinity, and a second frictional layer facing the first surface and having second electron affinity, wherein at least one of the first and second frictional layers is formed of an elastic material and is provided in an elastic structure.

A triboelectric generator includes a first contact charging member and a second contact charging member. The first contact charging member includes a first contact layer and a conductive electrode layer. The first contact layer includes a material that has a triboelectric series rating indicating a propensity to gain electrons due to a contacting event. The conductive electrode layer is disposed along the back side of the contact layer. The second contact charging member is spaced apart from and disposed oppositely from the first contact charging member. It includes an electrically conductive material layer that has a triboelectric series rating indicating a propensity to lose electrons when contacted by the first contact layer during the contacting event. The electrically conductive material acts as an electrode. A mechanism maintains a space between the first contact charging member and the second contact charging member except when a force is applied thereto.

In an elastic wave device, a piezoelectric substrate is stacked on a support substrate and an IDT electrode is provided on the piezoelectric substrate. Wiring line portions are provided on the piezoelectric substrate. A first hollow portion is provided in the support substrate at least below at least one of the wiring line portions and or below a region between the wiring line portions.

There is included a hooking cord 52 disposed on the back side of said finger insertion parts and held in and over at least three finger insertion parts 40C, 40D and 40E corresponding to a middle finger, a third finger and a little finger among the five finger insertion parts 40A through 40E of the glove body 10B so as to adjust a distance between the adjacent finger insertion parts whereby the three finger insertion parts can be pulled simultaneously by hooking the hooking cord 52 with a little finger of a hand not wearing the glove and grasping the finger insertion parts 40A and 40B corresponding the thumb and the first finger with a thumb and a first finger of the hand not wearing the glove 10.

A multi-layered garment may comprise components that are affixed using integrated belt loops. In particular, shorts belt loops of a shorts component may pass through an opening created when single-layer skirt belt loops of a skirt component are oriented outwards. Both the skirt belt loops and the shorts belt loops may be fully functional and aesthetically pleasing belt loops. Additionally, the shorts belt loops may be combined with the skirt belt loops to form integrated belt loops, thereby allowing a belt to pass beneath both sets of belt loops simultaneously to affix the shorts component to the skirt component.

A fog-resistant structure and a protective device for eyes is configured such that a transparent conductive film is formed on one surface of a lens or shield, a linear electrode is provided on upper and lower portions of the surface of the lens or shield so that each of a central region and opposite side regions of the lens or shield has substantially equal spacing between the upper and lower linear electrodes. Thus each region of the lens or shield has no difference in temperature without regulating power supplied to the transparent conductive film, thereby eliminating wasted power consumption and allowing even a structure using a battery as the power supply to have much longer available time.

A device used to smooth a material's surface with abrasion. More specifically, the device is in the form of a glove or mitten with an abrasive layer that is placed over, and secured on, a user's hand to protect the user's hand and to provide an agile and flexible range of motion while sanding a material's surface.

An embodiment of a leg protector of the present disclosure includes an upper thigh pad that is structurally attached to an upper bracing shell including lateral and medial uprights. The upper shell and thigh pad can be held to the player via a strap and/or garment. The uprights extend to uni- or polycentric hinges arranged on, and in one embodiment biased against, either side of the player's knee. A connecting member extends in a frontward direction from each hinge and attaches to a patella pad held in place over the player's knee. The patella pad may additionally be connected to the thigh pad via one or more connecting strip. Each hinge is also connected to a lower bracing shell, which includes lateral and medial uprights that extend down and around the player's lower leg, anteriorly or posteriorly. The lower shell can also be fitted via a strap or garment.

Cycling shorts for protecting a rider from harmful effects occasioned by the design of the substantially unpadded seat of a racing-type cycle. Fabric shorts of conventional or elongated design include a interior protective pad. The pad includes adjoined seat and crotch sections and is symmetrical with respect to an axis of symmetry. It includes an interior chamber for receiving pressurized air. A pump for delivering selectively pressurized air communicates with the interior chamber by means of a conduit. The chamber includes internally honeycombed sections for minimizing air flow so that the cushioning effect of the pad is preserved despite the force exerted by the weight of a wearer on the hard and relatively-inflexible seat.

A facemask for a helmet. The helmet includes a forehead area and two side areas. The facemask comprises a plurality of intersecting, integral metal supports forming a face protection area. The face protection area includes a top section, two side attachment sections and a front section. The top section can be shaped to conform to and attached to the forehead area of the helmet while each side attachment section can be shaped and formed to attach to one of the side areas of the helmet. Further, the front section can extend from the top section and each attachment section.

The present disclosure refers to an elasticized structure and a method for making such an elasticized structure. The elasticized structure, includes a first piece and at least one second piece. The first piece is superimposed and fixed onto the second piece in at least a first fixing zone and at least a second fixing zone. The second piece is at least partially made of an elastic material and has an internal zone comprised between the first fixing zone and the second fixing zone. The elasticized structure is able to assume a tensioned position and a rest position. In the rest position, the first piece has a hump comprised between the first fixing zone and the second fixing zone and flat parts alongside said first fixing zone and said second fixing zone, respectively.

An article of apparel may include a base layer and a cover layer. The cover layer may be stitchlessly-secured to an exterior surface of the base layer and positioned to extend along a side area and from a pelvic region to a leg region of the base layer. A width of the cover layer may be greater in the pelvic region than the first leg region. In some configurations, a frictional resistance of the exterior surface of the base layer may be greater than a frictional resistance of a surface of the cover layer.

An article of manufacture for stretchable night visibility bands for people and animals with a inner band consisting of a primarily stretchable material, an outer band consisting of a night visibility material, a way to attach the inner band to the outer band, a means to interchange said inner bands and said outer bands and a way to close the inner band around an object. A preferred embodiment includes further an outer band made of a night visibility material fabricated of least one of the following: a reflective, a florescent or a glow in the dark material and backed with a material such as VELCRO that attaches to the inner band, A preferred embodiment includes the element of inner band consisting of a stretchable material with a looped surface such as Velstretch™.

An inflatable bonnet cap system for wrapping around a user's hair featuring an inflatable headpiece with a series of inflatable horizontal and vertical tubes, each horizontal tube has connectors and a valve for inflation, and a spring ring having a spring ring tube constructed with accordion-style seams, the spring ring tube has connectors with valves for inflation. An insert edge is on the bottom edge of the bottommost horizontal tube, and a wedge is disposed on the top surface of the spring ring tube. The insert edge can be accepted into the wedge of the spring ring tube. The system of is inflatable and retractable.

The invention relates to an item of clothing, in particular to be worn during sports such as jogging, skating, cycling or similar. Said item of clothing is made of at least one yarn (3) that comprises a heat-reflecting covering (5).

Wraps for swaddling babies are provided that include a body having a base side. The wrap can further include two arms that are attached to the base side of the body of the wrap. The arms can extend outward in an opposite direction to one another along the base side of the body of the wrap. Related methods of using the wrap are also provided.

A control system for automatically switching power between two separate light sources integrated with a welding shield pivotally mounted to an adjustable headband includes at least one magnetic positional switch attached to the headband having electrical communication with at least one battery and the light sources, and two magnetic positional sensors strategically mounted on the interior surface of the welding shield along a defined arcurate path of rotation of the shield about the headband.

An adapter frame assembly is provided to receive and support an extra-large 110 mm×110 mm ADF, safety lens and diopter within the viewing window of an existing welding helmet. The adapter frame assembly provides for replacement of the safety lens without removing the ADF and installation or removal of a diopter without removing the safety lens or diopter. The ADF, safety lens and diopter are all easy to install and change.

A footwear remover has a platform elevated above the ground, with one or more recesses in the platform for removing footwear. The platform provides sufficient surface area to allow a user to place an unshoed, clean foot away from where a soiled shoe was previously positioned. In one embodiment, the footwear remover may be mounted to a suspending surface and used as a drying and storage rack for footwear. The footwear remover may optionally include hanging features for drying and hanging accessory items.

Disclosed is a non-slip footwear which comprises a main body formed of a flexible material and formed to surround the sole of a foot of a user and to open the top side of the foot; toe insertion holes formed of the flexible material, protruding from the front part of the main body so that toes of the foot are respectively inserted into the toe insertion holes; an non-slip outsole formed at the heel part of the main body and formed of foamed rubber having abrasion resistance, and having a thickness of 1 mm˜5 mm; and non-slip dots formed at the sole part of the main body and the non-slip outsole.

This invention relates to a means of securing a lens member into a snow goggle frame member, wherein the goggle frame member includes first insertion apertures, with first locating blocks at front edge, the lens member has a lens secured thereon, the lens includes first troughs to receive a corresponding first block therein, a pair of first rails are formed at respective sides of the first trough, each first rail has a first notch which includes a pair of second notches thereat, retainers are secured to the goggle frame and lens frame respectively, one end of the first insertion aperture includes a first insertion post at one end and a first insertion section at the other end thereof to receive the first insertion post therein, the first insertion section is then inserted into the first notch. The goggle may be replaced with various lenses and secured firmly.

A protective garment including a heat, flame and abrasion resistant outer shell configured to be worn on at least part of a body of a wearer, the outer shell including an opening formed therein. The garment further includes a heat and flame resistant material, of a different type of material than the outer shell, positioned in the opening.

An orthopedic component for use in orthopedic device includes a rigid frame and a flexible subshell connected to and extending flexibly outwardly from the rigid frame. The subshell may have a shell body and a perimeter edge portion defining a lip extending outwardly from a surface of a shell body and defining a clearance between the shell body and the lip. The subshell may include a plurality of slots and ventilated padding is used in combination with the slots. A tightenable fastener may be adjustably secured to the rigid frame and extend through an opening on the subshell, wherein the first side portion of the subshell is adjustable in location relative to the rigid frame.

Drum pedal assemblies are disclosed which can include one or more adjustment features. Adjustment features which can be included in embodiments of the invention can include spring tension adjustment features, pedal incline adjustment features, lever length adjustment features, beater stem angle adjustment features, chain path adjustment features, operable chain length adjustment features, and chain connection point position adjustment features.

The invention is a sound modification device used for a percussion instrument. It is comprised of a rigid clip that is spring-based to a closed position and an integrated dampening material, leather or plastic etc., that comes in contact with the vibrating surface. Once the clip is pulled apart it can be released to firmly attach over the hoop of any drum. The musician can choose the size or material of the dampening component to eliminate unwanted ring and or change the resonant note of the drum. The thickness of the dampening component can also be chosen by the drummer to increase or decrease the dampening characteristics.

The invention relates to an electronic musical instrument system (1) for influencing the sound of an electric musical instrument having a housing (2) that has signal ports (14, 18) and a power supply port (15). In order to simplify the individual combination of different audio effects, the housing (2) contains control electronics (6) that have associated slots (4a-4f) for effects modules (19), wherein the slots (4a-4f) are arranged in the housing (2) and each slot (4a-4f) has a multipin connection (5a-5f) for connection to a plug-in effects module (19). The invention additionally relates to a corresponding effects module (19).

A first input section is used for inputting first tone data, and a first output section is connected to the first input section via a first path. A second input section is used for inputting second tone data, and a second output section is connected to the second input section via a second path. A tone processing module performs tone processing on the tone data, and a processor is configured to insert the tone processing module into the first and second paths in response to selection of first and second modes, respectively. The tone processing module performs the tone processing on the first tone data in the first mode, and performs the tone processing on the second tone data in the second mode. The above allows connection of the module to be set easily in response to the selected mode.

Presented is a method for controlling an electronic stringed instrument. Embodiments of electrical stringed instruments according to the present invention can be actual stringed instruments or virtual representations of stringed instruments. The methods provide a way in which to teach and play electronic stringed instruments which allow a novice musician to focus on a small portion of playing of a stringed instrument while maintaining overall musicality and ability to play the instrument.

An installation structure for an acoustic transducer configured to vibrate a vibrated body in a first direction so as to permit the vibrated body to generate sounds, wherein the acoustic transducer includes: a magnetic-path forming portion that forms a magnetic path; a vibrating unit configured to vibrate in the first direction; and a connecting unit connecting the vibrating unit and the vibrated body to transmit vibration of the vibrating unit to the vibrated body, wherein the magnetic-path forming portion has a through-hole penetrating therethrough in the first direction from a first opening to a second opening, the connecting unit passing through the through-hole, wherein the vibrating unit is disposed on a first-opening side of the magnetic-path forming portion and is fixed to the connecting unit on the first-opening side, and wherein the vibrated body is connected to the connecting unit on a second-opening side of the magnetic-path forming portion.

According to some aspects, a cymbal system is provided, comprising a cymbal, and a vibrational transducer magnetically coupled to the cymbal, the magnetic coupling provided by at least one magnetic component on an upper side of the cymbal and at least one magnetic component on a lower side of the cymbal. According to some aspects, a method for transducing vibrations of a cymbal is provided, comprising magnetically coupling a vibrational transducer to a cymbal, the magnetic coupling provided by at least one magnetic component on an upper side of the cymbal and at least one magnetic component on a lower side of the cymbal.

In the present invention, images of a keyboard can be efficiently input into a learner's brain by using a display device in which two kinds of parallel black keys on a keyboard instrument are diagrammed as marker figures which are a substantially n-shaped figure and a substantially m-shaped figure, and the positions of pressed keys are plotted onto the marker figures. The display device can be configured using, for example, printed matter (e.g., a sheet or a card), a font set, an electronic display, and a three-dimensional object, and is provided as a sheet for writing music, performance or practice sheet music, learning cards, or a three-dimensional mimic keyboard. Altogether, provided is a novel music education method based on the images of a keyboard.

An acoustic effect impartment apparatus for use in a piano including a plurality of keys, a plurality of strings provided in corresponding relation to the keys and a plurality of hammers each responsive to an operation of any one of the keys to strike the string corresponding to the key. The acoustic effect impartment apparatus comprising at least one elongate member disposed near at least one of the plurality of strings. The elongate member movable by means of a first actuator between a retracted configuration in which the elongate member is disengaged away from the at least one of the plurality of strings and an imparted configuration wherein the elongate member is imparted against the at least one of the plurality of strings, and the first actuator can be actuated by a piano player such that the elongate member is imparted against the at least one of the plurality of strings as said piano player strikes a key associated therewith.

A musical drum having a hollow shell with at least one opening defined by a circumferential bearing edge, a drumhead, which includes an upper surface consisting of the batter head and a bottom surface, a snare assembly with a plurality of individual wires having opposite end portions, a mounting member affixed to at least one end portion, and means for releasably attaching the snare assembly to the circumferential bearing edge comprising a flexible U-shaped clip in engagement with the circumferential bearing edge in pressure-contact relation. The individual snare wires are disposed in abutment against the bottom surface of the drumhead to cause the wires to vibrate upon the striking of the batter head.

Disclosed herein are embodiments of a mounting system for pivotal coupling to an instrument, the mounting system including a tuner, a ball element outwardly extending from the tuner, and a socket element having a wall defining a socket in communication with a wall opening; whereby the socket is configured to pivotally receive at least a portion of the ball element via the wall opening to pivotally couple the ball element to the socket element.