701results about "Emergency springs" patented technology

An electrically powered surgical instrument includes a surgical end effector having a surgical procedure effecting actuation assembly. A handle is coupled with the end effector. An electric motor is disposed within a shell of the handle and has power terminals and a drive train actuating the assembly when the motor is supplied with power. A break-before-make power supply switch at the handle selectively controls supply of power to the motor. A post-termination braking circuit electrically short-circuits the power terminals when the switch does not supply power to the motor. A method for post-termination braking of an electrical motor utilizes the permanent magnetic field of the motor to counteract an inertia-induced over-stroke characteristic of the motor, drive train, and / or actuation assembly after powered operation by short-circuiting the still-spinning motor to create an electrically generated magnetic field in opposition to the permanent magnetic field upon ceasing supply of power to the motor.

A pusher formed of a rubber material, a click plate, a membrane switch which serves as a second step switch, a reinforcing plate, a membrane sheet on which a plurality of first step switches are formed, a key operation base and a knob are sequentially assembled into a case. The knob includes a plurality of depressing pieces having on its internal surface a projection which moves into contact with each membrane switch and also includes a marginal portion which is supported by the top surface of the case. The knob is thin-walled except for the depressing piece, and the thin-walled portion comprises a thermoplastic elastomer or silicone rubber. The knob, the key operation base and the reinforcing plate are secured together. As the depressing piece is depressed, the thin-walled portion which is located therearound becomes flexed, whereby the membrane switch is depressed by the projection to turn the switch on. When the depressing piece is further depressed, the reinforcing plate moves and the click plate reverses, turning the switch on.

A key activation system for use in a handheld communication device is provided. The system comprises an activation mechanism associated with a key in the system, a first feedback system and a second feedback system. The activation mechanism is associated with the key activation system and provides a first feedback sense when the activation mechanism has triggered the first activation condition. The second feedback system provides a second feedback sense indicating when the key triggers the second activation condition. In the system, the second feedback system operates independently from the activation mechanism and the first activation condition is triggered before the second activation condition when the activation mechanism is initially engaged. An activation mechanism may be centrally located for a set of keys.

An electrical device is disclosed for use in a wall box having a series of buttons that can either be rocker buttons or push buttons. These buttons can be supported by springboards formed integral with a support board. The springboards are for biasing the series of buttons. Much of the device is housed within a housing formed at a first end by a body and a second end by a strap coupled to the housing. The strap extends beyond the body, wherein this strap can be used to dissipate heat from the device. Inside of the housing can be at least one circuit board which has switches, which can be used to receive instructions from a plurality of buttons. In one embodiment, a plurality of light pipes are adapted so that they are housed at least partially inside of these buttons. At least one portion of the light pipe can be formed as a shaft and adapted to extend out from this housing and down to a light emitter disposed on the circuit board. In at least one embodiment, this light pipe can also include at least one actuator which is used to contact an associated springboard when a button is acted on. This movement causes the springboard to contact an actuator on a TAC switch which then results in an associated set of instructions being sent to the circuit board.

An illumination button applied to an illumination switch assembly is provided. The illumination button includes a light guide body and a button cap. The light guide body is disposed in the button cap to press a switch element with a pressing bump and to receive light from a light source with a light receiving structure. The light received by the light receiving structure is guided by the light guide body to leave a top surface of the button cap through a light exiting structure. Two connecting members are disposed on an edge the button cap, wherein the two connecting members provided to be clamped by clamping members disposed on an inner surface of a housing, so as to hold the button cap in a button hole of the housing. Therefore, the button cap is able to be installed to the housing quickly with out using a tool.

A tip of a pair of arm portions that integrally extends from a fixed portion and both side portions of a front portion side of a key top are connected with each other in a coupling portion. When a downward pressing force is applied to a center of an operation surface of the key top, a bending moment using a connection portion of a substrate side as a fulcrum and a bending moment using the coupling portion of a tip side as a fulcrum act on the arm portion. The arm portion is deformed into a S-shape having bending deformation portions, and therefore the key top may be lowered in a nearly horizontal posture. The key top has a structure in which both side portions thereof are supported by the arm portions, thereby ensuring a small size and a large elevating stroke.

A GFCI device includes a latch assembly provided with a rigid electrically conducting bar connected thereto such that when a user presses a reset button the latch assembly is moved toward a pair of contacts provided as part of a reset circuit to initiate a reset operation. When the electrically conducting bar on the latch assembly connects the pair of contacts, the reset circuit is closed and an actuator is activated to place the GFCI device in the latched, reset, condition. If the GFCI device is correctly wired, the latch assembly enters the latched state. If the device is not properly wired no power is provided to the actuator and the device remains in the tripped, or open, state.

An electrical device is disclosed for use in a wall box having a series of buttons that can either be rocker buttons or push buttons. These buttons can be supported by springboards formed integral with a support board. The springboards are for biasing the series of buttons. Much of the device is housed within a housing formed at a first end by a body and a second end by a strap coupled to the housing. The strap extends beyond the body, wherein this strap can be used to dissipate heat from the device. Inside of the housing can be at least one circuit board which has switches, which can be used to receive instructions from a plurality of buttons. In one embodiment, a plurality of light pipes are adapted so that they are housed at least partially inside of these buttons. At least one portion of the light pipe can be formed as a shaft and adapted to extend out from this housing and down to a light emitter disposed on the circuit board. In at least one embodiment, this light pipe can also include at least one actuator which is used to contact an associated springboard when a button is acted on. This movement causes the springboard to contact an actuator on a TAC switch which then results in an associated set of instructions being sent to the circuit board.

A bezel-button assembly comprising at least one button connected to a bezel. The button is moveable between a first position and at least a second position. An elastic layer connects the bezel to the button and is adapted to provide at least a partial mechanical bias of the button toward the first position. A method for forming a bezel-button assembly is also disclosed.

Disclosed are a keying structure and a keyboard applying same. The keying structure includes a switch button, a heavy load spring, a switch shell, a striking pillar, a light load spring and a thin film circuit, wherein the switch button is clamped at the upper end of the switch shell, the heavy load spring is arranged underneath the switch button, the striking pillar is arranged within the switch shell, and the striking pillar is arranged under the heavy load spring, the light load spring is arranged underneath the striking pillar and the thin film circuit is arranged underneath the light load spring. During use, the switch button is pressed with a hand and, depressed under pressure, transfers a down force to the heavy load spring; the heavy load spring transfers the down force to the striking pillar, and the striking pillar depresses the light load spring to make the lower part of the striking pillar contact with the thin film circuit, thus making the thin film circuit conduct. The sensitivity of the present invention is high, the invention also has a downward idle motion, improving the feel to the hand for the player, and is low in cost.

The invention relates to a thin keyboard on-off key group structure generating a press touch feel and rebounded rapidly. The thin keyboard on-off key group structure comprises a mechanical moving part and a switch control part, wherein the mechanical moving part comprises a key cap, a down-press and rapidly-rebounded mechanism; the down-press and rapidly-rebounded mechanism comprises a dual-connection rod, a balance rod and a double-arch elastic sheet, can give out a ringing press touch sound and has the characteristic of being rapidly rebounded after a key is loosen; the mechanical moving part also comprises the key cap, two dual-connection rods and the dual-arch elastic sheet or comprises the key cap, two balance rods and the dual-arch elastic sheet; the switch control part is used for controlling switch-on and switch-off of a key switching circuit and comprises a surface mounted infrared light emitting diode (IR), a surface mounted photoelectric receiving tube (PT), an optical element and a light blocking device for controlling switch-on and switch-off of a switch; and the switch control part can also be a traditional button-type switch control device or a rubber domical switch control device.

Spring operated actuator devices for an electrical circuit breaker and / or electrical switching device include at least one clock spring comprising a disc shaped body with gear teeth and a spiral spring, a cam shaft holding the at least one clock spring with an inner end portion of the spiral spring attached to the cam shaft, and a drive cam held by the cam shaft adapted to be in communication with a follower that directs an actuator to open or close a mobile contact to maintain open and closed energy status of the electrical circuit. The at least one clock spring is configured as a closing spring of the spring operated actuator.

A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. The lifting unit is disposed on the substrate. The multistage positioning component is disposed on the substrate and has a plurality of first actuating portions. The keycap is connected with the lifting unit and adjacent by the multistage positioning component. The keycap has a second actuating portion. The keycap is moved relative to the substrate via the lifting unit, and the second actuating portion can contact against one of the plurality of first actuating portions to generate a feedback signal.

A disconnector (1) including a movable conductive unit (6) comprising a main electrically conductive body (9) has a main contact (4b) as well as an arcing contact (5b). According to the invention, the unit (6) further comprises a secondary body (14) mounted to move in sliding relatively to the main body (9) along a movement direction (11) of the unit (6), the secondary body (14) being designed to be connected to a connection point (22) of a drive device of the unit (6), the unit further comprising resilient return means (16) interposed between the bodies (9, 14), the switchgear being designed so that during an opening operation the resilient return means (16) can firstly store energy as a result of the secondary body (14) moving relative to the main body (9), and can then release the stored energy in order to cause the main body (9) to accelerate.

A high-security surge protection device comprises an outer shell, at least one excess voltage protection element, a release device, an arc-control device and a box body. The excess voltage protection element is arranged inside the outer shell, and the release device is used for separating the excess voltage protection element from an alternating current or direct current circuit, or equipment. The arc-control device is used for extinguishing the electric arc generated in the separation process of the excess voltage protection element and the alternating current or direct current circuit, or the equipment. The release device is formed by a pressure spring, a metal spring sheet, a slider and a soft conductor. The arc-control device is formed by an arc-control chute sheet set, a first arc striking sheet, a second arc striking sheet, a rotating block and a torsional spring. The rotating block is of a strip-shaped block, an electric arc reflecting plate is arranged on one end portion of the rotating block, an installation hole is formed in the other end portion of the rotating block, and an arc-control cavity is formed in the position, close to the electric arc reflecting plate, of the rotating block. The arc-control chute sheet set is installed in an arc-control chamber surrounded by the box body and the outer shell. One end of the first arc striking sheet is connected to or close to the left end of the arc-control chute sheet set, and one end of the second arc striking sheet is connected to or close to the right end of the arc-control chute sheet set.

A circuit protection device includes a base assembly, a spring on top of the base, a conductive terminal that fits over the base and spring, and a cap that first over the base, spring and terminal. The base includes latches on the front side of the base. The conductive terminal includes a first end on the front side of the base and a second end on a rear side of the base that is opposite to the front side. The cap includes a first protrusion extending downward from the cap above one of the latches and a second protrusion extending downward from the cap above the other latch. The circuit protection device also includes a means for activating the circuit protection device after reflow in response to a force applied to the cap in a first direction defined from a top of the cap towards the base.

The invention discloses a magnetic type button which comprises a shell and a middle shaft body arranged in the shell, wherein the bottom of the middle shaft body extends out of the shell; a keycap seat is pressed, so that the middle shaft body can reciprocate in the base along the vertical direction; a first magnetic element is arranged on the upper section of the middle shaft body; a second magnetic element which can move up and down is arranged coaxial to the first magnetic element; and a third magnetic element is arranged in the shell. A repulsive or an attractive magnetic force is generated between the first magnetic element and the second magnetic element; by changing the electrified current of an electrified coil, the repulsive or attractive magnetic force can be adjusted, so that the using hand feel of the keycap seat is improved; by adjusting the forward and backward electrified currents of the coil, the magnetic force between the second and third magnetic elements can be adjusted, so that the paragraph sense strength and the pressing vigor are changed; and by adjusting the magnetic forces of the first and second magnetic elements, the magnetic type button is of a sense oflayer after a relatively high paragraph sense.

A component monitoring system structured to monitor circuit breaker assembly operating mechanism component characteristics is provided. The component monitoring system includes a record assembly, at least one sensor assembly and a comparison assembly. The record assembly includes selected nominal data for a selected circuit breaker component. The least one sensor assembly is structured to measure a number of actual component characteristics of a selected circuit breaker component and to transmit actual component characteristic output data. The comparison assembly is structured to compare the sensor assembly actual component characteristic output data to the selected nominal data and to provide an indication of whether the sensor assembly output data is acceptable when compared to the selected nominal data. The at least one sensor assembly is in electronic communication with the comparison assembly.

The present disclosure provides high temperature thermal cutoff devices having a high-temperature thermal pellet with a transition temperature of greater than or equal to about 240 DEG C and comprising at least one organic compound. The pellet is disposed in a housing, which is sealed with a high-temperature seal that provides substantial sealing up to at least the transition temperature. The high-temperature TCO also has a current interruption assembly, which establishes electrical continuity in a first operating condition corresponding to an operating temperature of less than said transitiontemperature and discontinues electrical continuity when the operating temperature exceeds the transition temperature. Methods of making such high-temperature thermal cut off devices are also provided.

Exemplary embodiments of the present invention are directed to a circuit protection device, A circuit protection device may comprise a housing defining a cavity and a metal oxide varistor (MOV) disposed within the cavity. The circuit protection device may further comprise a first terminal electrically attached at a first end to the MOV by solder and extending outside of the housing at a second end. An arc shield is disposed within the housing between the first end of the first terminal and at least partially over the solder. The circuit protection device may further comprise a spring configured to bias the arc shield against a micro switch having an indicator portion disposed at least partially outside of the housing. When a voltage surge condition occurs, the MOV changes from a non-conductive state to a conductive state and current flows between the first terminal and a second terminal where the heat generated by the current flowing through the varistor melts the solder and the first end of the first terminal electrically separates from the varistor.

A visible disconnect switch (VDS) interlock assembly is provided. The VDS interlock assembly is movable between a CBA, first lockout position, wherein a CBA second contact assembly cannot move when a VDS second contact assembly is in a first position, and a VDS, second lockout position, wherein a VDS second contact assembly cannot move when the CBA second contact assembly is in a second position. Further, the VDS interlock assembly is placed in an open position in between where the CBA, first lockout position and the VDS, second lockout position; from the open position the VDS interlock assembly may be moved into one of the CBA, first lockout position or the VDS, second lockout position.

A switch module with a built-in structure of anti-surge and dual disconnection mainly comprises an overcurrent protection switch having plates and insulating elements for anti-surge and dual disconnection structure ingeniously built inside a heat-resisting housing. The switch module has a first connecting point and a second connecting point for operation. When overvoltage occurs, temperature of at least one metal oxide varistor would instantly rise up to a degree higher than the melting point thereof, melting at least one thermo-sensitive piece, loosening at least one spring element, displacing a pushing element and thus forcing the connecting points detaching from each other to turn off the switch and stop supplying electricity power; meanwhile, insulating elements would isolate conductive components such as thermo-sensitive pieces, spring elements and plates to further ensure a complete disconnection and more of electricity safety.

In an electrostatic relay in which a moving contact and a movable electrode are displaced in parallel with a base substrate, an opening force is increased when the movable electrode is separated from a fixed electrode, and a structure is simplified to enhance a degree of freedom of design. A fixed contact portion and a fixed electrode portion are fixed to the base substrate. The fixed electrode portion and a movable electrode portion constitute an electrostatic actuator that displaces the movable electrode portion and a moving contact portion. A movable spring provided in a spring supporting portion retains the movable electrode portion in a displaceable manner. A cantilever secondary spring is provided in the spring supporting portion, and a projection portion is provided in a front end face of the movable electrode portion. The secondary spring abuts on the projection portion while being not deformed until abutting on the projection portion, before the moving contact of the moving contact portion abuts on the fixed contact of the fixed contact portion when the moving contact portion and the movable electrode portion are displaced.

The invention discloses a mechanical keyboard button structure. The mechanical keyboard button structure comprises a base plate, a circuit board, a mechanical switch and a key cap which are sequentially connected from bottom to top, the mechanical switch is used for guiding the key cap to do vertical displacement and converting a press force on the key cap into a switching signal to the circuit board so as to make a circuit conducted, the mechanical switch comprises a support plate and a switch core shaft and also comprises scissors, the switch core shaft is arranged on the support plate, the upper part of the scissors is fixed with the bottom surface of the key cap, the lower part of the scissors is fixed with the support plate, and the switch core shaft passes through the scissors and props against the bottom surface of the key cap. In the mechanical keyboard button structure, a mechanical shaft structure and a scissors structure are combined, so that the button is more stable in supporting and has a longer service lifetime; meanwhile, the corner is compatible with a better hand feeling and a function; the structure can be used for a keyboard with lower stroke, so that the keyboard is thinner and lighter and is wider in application market; and finally, when a trigger circuit below a single key is damaged, the whole circuit is not needed to change, and the single button can be maintained and replaced.