"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8129644 | Motor operator for switchgear for mains power distribution systems A motor operator for switchgear for use in mains power distribution systems comprising a closed cabinet (5) with an operating shaft (53) protruding there from said operating shaft being rotatable at least between two positions and has a coupling part (... | 03/06/2012 |
| 7838786 | Switching apparatus A switching apparatus has a frame with a circular notch in its operating surface; a operating handle disposed in the notch, said handle can change from a lower position corresponding to automatic mode to a upper position corresponding to manual mode, and the handle ... | 11/23/2010 |
| 7397007 | Assembly for controlling the force applied to a pantograph A method and apparatus for controlling a force applied to a pantograph. A bidirectional snubber and a velocity controller are used to dampen the applied force. Linkages between a shaft and the bidirectional snubber and between the bidirectional snubber and the veloc... | 07/08/2008 |
| 7390985 | Force feedback input device Disclosed is a force feedback input device including a cylindrical operating member having an open bottom. A support member that is rotatable supports a central portion of an inner surface of the operating member, and a motor which is held by the support member. A r... | 06/24/2008 |
| 7368677 | Reverse bias hatchet reset spring A spring offset device is structured to extend between a circuit breaker frame assembly and a trip mechanism. The offset device includes an offset member disposed on a trip device banana link, a spring anchor disposed on the frame assembly, and a spring extending be... | 05/06/2008 |
| 7368675 | External operation handle device for a circuit breaker An external operation handle device is used for a circuit breaker for switching a locker handle to ON and OFF positions. The handle device includes a main body casing for the circuit breaker, a mount base held on the main body casing, a rotary handle grip mounted on... | 05/06/2008 |
| 7319203 | Circuit interrupter and operating mechanism therefor An operating mechanism is provided for a circuit interrupter, such as a battery disconnect apparatus, including a housing and a number of stationary electrical contacts enclosed by the housing. The operating mechanism includes a cam member having a profile with firs... | 01/15/2008 |
| 7294796 | Switch device, data-processing apparatus and playback apparatus A playback apparatus is provided, which comprises a switch device (200) that gives the user good feeling of operating. A tape-shaped switch (500) is provided on a base part (410), extending along the circumference of the base part (410). ... | 11/13/2007 |
| 7244148 | Circuit disconnect assembly A circuit disconnect assembly for a high-voltage electrical storage device in a vehicle integrates a grip portion and a fuse holder portion into one unit. The handle is easily manipulated manually within a housing of the storage device to open a high-voltage circuit... | 07/17/2007 |
| 7189933 | Solid insulated disconnection switch Provided is a solid insulated disconnection switch including a base frame to which outside electrical equipment is electrically connected, a driving assembly generating rotating power, a shaft of which an outside surface has a screw thread and which is rotated by th... | 03/13/2007 |
| 7154057 | Telescopic switch A high voltage, high current telescopic disconnect switch suitable for use in isolated phase bus duct has two fixed conductors and a movable telescopic conductor coaxially disposed within the first fixed conductor and movable to a closed position bridging the first ... | 12/26/2006 |
| 7009130 | Switching device A switching device changes over breaking and closing of an electric current by opening/closing a contact portion. An electrically-operated motor generates energy for closing a contact and energy generated by the rotation of the electrically-operated motor is accumul... | 03/07/2006 |
| 7009129 | Switching device comprising a breaker mechanism A switching device including housing and a breaker mechanism, the latter consisting of a trip lever, a catch, a displaceable contact arm and a deflection shaft that is fixed to the housing. The aim is to generate a constant contact force. To achieve this, the end of... | 03/07/2006 |
| 7002088 | Handle apparatus for a manual motor Disclosed is a handle apparatus of a manual motor starter having an improved structure for transferring driving force between a control lever and a driving lever. The handle apparatus comprises: a rotary handle for controlling ON and OFF operations of the manual mot... | 02/21/2006 |
| 6998547 | On-load tap changer for a sequence switch A load changeover switch for a tap changer with two permanent main contact pairs for each phase to be switched, wherein the fixed contacts thereof are each time bridged over by a movable permanent main contact. The fixed permanent main contacts consist of a pluralit... | 02/14/2006 |
| 6987234 | Circuit breaker comprising a control assembly and interrupting chamber and method of assembly A circuit breaker including a control assembly having a driving and a driven splined shafts and a pair of arcing contacts movable by the control assembly. A synchronization assembly is provided for synchronizing the two splined shafts and includes two levers each of... | 01/17/2006 |
| 6963042 | Remote controlled circuit breaker switch handle engagement apparatus A remote controlled circuit breaker switch handle engagement apparatus is provided. The apparatus is adapted to be removably attached across a circuit breaker face-plate of a traditional residential and commercial circuit breaker in order to facilitate remote comple... | 11/08/2005 |
| 6946609 | Alignment mechanism for a telescopic switch In a telescopic switch between a step-up transformer and a generator, axially spaced sets of three alignment mechanisms each are disposed in a housing. Each mechanism includes puck secured to an insulator secured in turn to a fixed conductor, an inner ring and a bas... | 09/20/2005 |
| 6933470 | Incremental seal wire activation A method and apparatus for incremental seal wire activation, in one embodiment, is a method of sealing a seam of a bag. The method includes sealing a first side of the seam utilizing a first configuration. The method farther includes vacuuming gases from the bag. Th... | 08/23/2005 |
| 6919522 | Input device An input device includes a button, a case operable to guide the button for allowing the button to slide, a switch fixed to the case and activated with the button, a motor fixed to the case, a driving member fixed to one of the button and the motor, a coil spring fix... | 07/19/2005 |
| 6864439 | Switch for controlling a range of movement A switch for limiting and controlling a linear range of movement by rotational means. Two limiting positions of the switch are independently adjusted using worm gears. The switch includes a plate and a rotatable block having a rotatable shaft rotatably disposed rela... | 03/08/2005 |
| 6838629 | Energy accumulator for a sequence switch A force-storing unit for a tap changer has an output shaft journaled in a support and a pair of parallel guide rods fixed on the support, defining a longitudinal direction, and spaced parallel to the shaft. A force-storing slide and an output part are displaceable l... | 01/04/2005 |
| 6809279 | Spring loaded mechanical control mechanism for a circuit breaker comprising a toothed wheel cooperating with a cog wheel The spring-loaded mechanical control mechanism for a circuit-breaker in a high-voltage or medium-voltage grid comprises a toothed wheel turned by a spring from a first angular position to a second angular position, and a cog wheel co-operating with the toothed wheel... | 10/26/2004 |
| 6710565 | Manual inputting device capable of imparting manipulation feeling A manual inputting device which includes a sun gear, three planet gears, a motor having an output shaft thereof fixed to the sun gear, a ring gear casing integrally forming a ring gear on an inner peripheral surface thereof, a carrier rotated along with revolution o... | 03/23/2004 |
| 6667452 | High-voltage circuit-breaker having a spring-loaded control mechanism with an energy-recovering additional spring The electric circuit-breaker includes an interrupting chamber with at least one moving contact inside the chamber, the moving contact being actuated by means of a spring-loaded mechanical control mechanism so as to open or close the circuit-breaker. The c... | 12/23/2003 |
| 6610951 | Forward/backward switch protective structure for remotely controllable car A forward/backward switch protective structure for a remotely controllable car, including an output shaft having a differential section. Two gears are respectively rotatably disposed at two ends of the differential section. A seat body is fixedly disposed... | 08/26/2003 |
| 6606229 | Handle operating mechanism in circuit breaker In a slow-make type circuit breaker for opening and closing a main circuit contact in synchronism with the manual operation of a rotary operation handle, a ratchet unit 12 as an artificial quick-make means for forcibly increasing the operating force of th... | 08/12/2003 |
| 6576851 | Switching device A switching device includes two or more switching modules (7, 8, 15) with at least one switch and connection clamps (24), an actuator (16), and a transfer device (39). The transfer device (39) propagates the drive motion initiated by the actuator (16) in ... | 06/10/2003 |
| 6573468 | Actuation and control device for high-and medium-voltage circuit breakers An actuation and control device for opening and/or closing high- and medium-voltage circuit breakers having at least one fixed contact and at least one moving contact, comprising actuation means which are operatively connected to the moving contact and su... | 06/03/2003 |
| 6563067 | Control device for make break switch A make break switchgear includes a first breaking lever receiving a torque in a counterclockwise direction, a second breaking lever connected through a linkage to the first breaking lever, and a making lever receiving a torque in a clockwise direction. Th... | 05/13/2003 |
| 6518526 | Handle-operating mechanism for a circuit breaker including intermeshing handle clutch gear and operator toggle gear A handle-operating mechanism for a circuit breaker includes a rotary operating handle for opening and closing a main-circuit contact of a circuit breaker, a rotating gear operably connected to the operating handle and having a first engaging device, and a... | 02/11/2003 |
| 6316739 | Device for controlling a breaker A device for controlling a breaker comprising a weight (48) provided in the vicinity of a releasing trigger (19) and an auxiliary spring (50 )for urging the weight (48) so that the weight (48)is in contact with the releasing trigger (19). An equivalent ma... | 11/13/2001 |
| 6124558 | Rotation-activated circuit-breaker with a leading auxiliary switch A rotation activated circuit breaker with a leading auxiliary switch, in which the auxiliary contacts of the auxiliary switch are actuated before the main contacts. An actuator element is provided, which contains a drive pinion that is rotation actuated b... | 09/26/2000 |
| 6066820 | Spring drive mechanism for switchgear, in particular a circuit breaker A spring drive mechanism for switchgear, in particular for a circuit breaker. The mechanism has an engagement shaft that is rotatable about its axis, a large toothed-wheel mounted on said shaft, a small toothed-wheel meshing with said large toothed-wheel ... | 05/23/2000 |
| 5981889 | Spring drive mechanism for switch gear, in particular a circuit breaker A spring drive mechanism for power switch gear. The mechanism includes an engagement shaft free to rotate about its own axis and carrying both a large toothed wheel and a cam. An engagement spring constituted by a traction spring is coupled to the large t... | 11/09/1999 |
| 5905237 | Vehicular knob switch apparatus A vehicular knob switch apparatus suitable for the attainment of size reduction and multi-function is provided. An operating knob is attached to a cylindrical housing rotatably from the exterior. Integral with the operating knob is a first gear which is d... | 05/18/1999 |
| 5901838 | Force storing mechanism An operating mechanism having a guiding circular plate (9b) provided at a side surface of a gear wheel (9), an annular groove (15d) formed in a pinion (15) into which the guiding circular plate (9b) is fitted whereby the relative position in axial directi... | 05/11/1999 |
| 5850909 | Switch mechanism for service disconnect A switch mechanism for electrical service quick connect/disconnect, especially suitable for electric vehicles. The switch mechanism includes a handle for turning a shaft which, through a lost motion connection, rotates a gear in engagement with a rack. Th... | 12/22/1998 |
| 5804784 | Lever switch apparatus A lever switch apparatus having a lever, a switch body, and a plurality of rotatively operated knobs, wherein a connection between the lever and the switch body is made with no wire involved. The lever 2 has a first knob 21 and a second knob 24 that are r... | 09/08/1998 |
| 5723836 | Operation mechanism of circuit breaker An operation mechanism of a circuit breaker which is highly reliable and inexpensive and in which an intermittent meshing of toothed wheels and resultant noise do not occur. The operation mechanism includes a gear wheel for driving a cam shaft to store me... | 03/03/1998 |