| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Thermal overload relay | US12656731 | 2010-02-16 | US20100245020A1 | 2010-09-30 | Fumihiro Morishita; Yukinari Furuhata; Takeo Kamosaki |
| A thermal overload relay includes a main bimetal for detection of an overload current, a shifter associated with the main bimetal, a release lever working according to a displacement of the shifter, a contact reversing mechanism for changing-over contacts by reversing action caused by rotation of the release lever, and a manipulation structure for manipulating the release lever and the contact reversing mechanism. The manipulation structure includes a reset bar for returning the contact reversing mechanism to an initial state. The reset bar is arranged to change-over between a manual reset state in which the reset bar can be pushed-in and an automatic reset state in which the reset bar is pushed-in and turned from the manual reset state and held in that state. | ||||||
| 22 | Electromechanical interlock for electrical protection devices | US12102991 | 2008-04-15 | US20090255787A1 | 2009-10-15 | Mahesh Jaywant Rane; Yatin Vilas Newase; Simhadri Ramalingeswara Rao Gupta |
| An interlock is presented which may be mechanically interconnected with a circuit breaker. The interlock toggles between a locked out position that causes the circuit breaker to trip and prevents closure thereof and a non-locked out position wherein the circuit breaker functions. The interlock includes a frame, a lockout actuator supported by the frame, a reset actuator also supported by the frame and a latching assembly. The latching assembly includes a lockout lever that is responsive to movement of the lockout actuator that is pivotably supported by the frame and a lockout trip rod responsive to movement of the lockout actuator. Also provided is a reset lever that is responsive to movement of the reset actuator and that is also pivotably supported by the frame. The reset lever is configured to prevent movement of the lockout actuator without movement of the reset lever and wherein the lockout trip rod is configured for movement between a locked out position and a non-locked out position. | ||||||
| 23 | Thermally-sensible overcurrent protective relay including heater holder | US126075 | 1987-11-24 | US4845455A | 1989-07-04 | Yuji Sako; Shigeharu Ootsuka |
| Disclosed herewith is a thermally-sensible overcurrent protective relay, which comprises normally-closed contact means, operation means, a plurality of bimetals, a communicating plate, a heater mounted on each bimetal and electrically coupled to at least one of main circuit terminals for a power-source side and a load side, a bimetal retainer electrically coupled to the other main circuit terminal, a first groove, a second groove and a heater holder having a pin fitted in a through hole formed in the bimetal retainer. The operation means opens or closes the normally-closed contact means. The same current as flows through a main circuit to be controlled flows through the bimetals. The communicating plate transmits mechanical deforming force of the bimetals to the operation means so as to open the normally-closed contact means. The heater, when generating heat, causes a mechanical deformation on the bimetals. The bimetal retainer secures one end of each bimetal. The first groove securely holds the main circuit terminals, while the second groove securely holds a connecting section between the bimetal retainer and the bimetals. | ||||||
| 24 | Overload relay having adaptive differential mechanism | US134811 | 1987-12-17 | US4806897A | 1989-02-21 | Michael J. Fajner; Edward A. Mallonen; John J. Siebenlist |
| In a plural phase overload relay, a pivot lever (12) is mounted to the ambient compensator deflector (9), and a second pivot lever (34) is mounted to both driver and follower slide bars (36 and 38) and driven thereby to engage and pivot the first lever on the ambient compensator deflector to trip a cut-out switch. The ambient compensator deflector adjusts both the three phase current trip threshold and the loss of phase current trip threshold, and also affords ambient compensator of each. A constant ratio relationship between these two thresholds is provided throughout the entire range of current trip threshold settings. The driver bar moves a first distance for three phase trip and a second shorter distance for loss of phase trip. The ratio of these distances is constant notwithstanding adjustment by the ambient compensator deflector changing the length of such distances. | ||||||
| 25 | Thermally-sensitive overcurrent protective relay including wire connection terminal | US110083 | 1987-10-16 | US4788518A | 1988-11-29 | Yuji Sako; Haruhiko Ito; Mineo Sano |
| A thermally-sensitive overcurrent protective relay includes a housing case, a bimetal strip bendable in response to an operating current flowing through a control circuit of the overcurrent protective relay, and a movable contact biased by a spring to form a toggle mechanism operable in response to the bending action of the bimetal. A lever supporting bracket mechanically supports the movable contact at a fulcrum portion and electrically connects the movable contact to a terminal. The terminal is mounted in the housing case to conduct current to the control circuit through a contact spring for electrically connecting the lever supporting bracket. This lever supporting member includes a trip current adjusting mechanism adapted to be rotated at its end portion by turning an adjusting screw for adjustment of the operation current. | ||||||
| 26 | Overload relay with fast acting bimetal on high current | US42809773 | 1973-12-26 | US3852694A | 1974-12-03 | DI MARCO B; KRALIK A |
| An overload relay having a conventional replaceable heater is provided with an auxiliary bimetal secured to the deflectable end of the main bimetal and arranged to deflect in a direction opposite to deflection of the latter. Tripping results from the net deflection of these bimetals. the main bimetal shields the auxiliary bimetal from direct heat radiating from the heater, so that upon rapid heating of the latter the initial result is that the main bimetal deflects rapidly and there is essentially no reverse deflection of the auxiliary bimetal whereby tripping takes place very rapidly. A contact position-indicating lever is biased to follow the movable contact to its open position. when the contacts are closed, this lever is accessible for manual opening of the overload relay.
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| 27 | Electric switches | US30226872 | 1972-10-30 | US3800260A | 1974-03-26 | WOODGER F |
| An electric switch comprises a movable contact carried by a snap-acting arm which is actuated by a trip lever, the trip lever being resiliently biased into contact with a fulcrum about which it may be rocked by an actuator arm to actuate the snap-acting arm. The trip lever applies actuating pressure to the snap-acting arm through a pin extending from the trip lever.
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| 28 | Convertible thermal safety cut-out switch | US3710294D | 1972-03-09 | US3710294A | 1973-01-09 | DRIES J |
| A frangible hold-down member is applied to the manual button for resetting a cut-out switch, thereby conditioning the switch for automatic reset when the member is in place and for only manual reset when the member is removed.
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| 29 | Electrical circuit overload protector of the thermally responsive bimetal element type | US3535669D | 1968-05-13 | US3535669A | 1970-10-20 | CARTER URIEL F; KOLB ARTHUR F; MALLONEN EDWARD A |
| 30 | Thermal device | US85528959 | 1959-11-25 | US3038051A | 1962-06-05 | HOWARD JOHN F |
| 31 | RECEPTACLE TYPE GROUND FAULT CIRCUIT INTERRUPTER WITH REVERSE WIRE PROTECTION | US13646622 | 2012-10-28 | US20130038968A1 | 2013-02-14 | Ze Chen; Gui Chen; Fengming Li |
| A ground fault circuit interrupter comprises a reset key, a reset locking mechanism, a reset mechanism, a reset bracket, a bracket reset mechanism, a bracket homing mechanism, a reset linkage mechanism, and a reset linkage clutching mechanism. A conductive assembly is configured to selectively connect or disconnect electrical continuity between the power input side and the load side. The conductive assembly comprises pairs of short-circuit conductive strips with conductive movable contacts, power input connection assemblies with input conductive stationary contacts, wiring output assemblies, receptacle output assemblies with output stationary contacts, and a first short-circuit conductor and a second short-circuit conductor. A reverse wiring protection device comprises an electromagnetic generating device having a power supply sub-circuit and an electromagnetic actuator bracket configured to selectively close first normally open switch and second normally open switch and further configured to open first normally closed switch and second normally closed switch. | ||||||
| 32 | High temperature lockout and thermostat | US222396 | 1998-12-29 | US6072680A | 2000-06-06 | Shaun Goodwin; David J. Charvat |
| A system and method for interrupting the power to a load, comprising a contact interposed between the source of power and the load, receiving power from the power supply to a circuit on the power supply side of the contact, the circuit comprising a series connection of a resettable fuse device, a bi-metallic switch, and a contact control, the resettable fuse device side of the circuit being electrically connected to the power source and the contact control being the closest of the three series components electrically connected to ground, the contact control having an electrical interface with the contact, the contact remaining in a closed position when power is supplied to the contact control and the contact remaining in an open position when power is interrupted to the contact control, the circuit further comprising a first bypass segment connecting the side of the resettable fuse opposite the power supply to a point between the contact and the load, the first bypass segment having an electrically open portion that is closeable, and the circuit further comprising a second bypass segment around the resettable fuse device, the second bypass segment having an electrically open portion that is closeable. The resettable fuse device is preferably a positive temperature coefficient element whose temperature is responsive to an electrical current passing therethrough. | ||||||
| 33 | Electrical switch with user selectable manual/automatic reset | US99795 | 1998-06-18 | US5950811A | 1999-09-14 | Thomas O. Kautz; Frank J. Stier |
| An electrical switch has a snap action blade with a contact pad. The snap action blade toggles between a first configuration at which the contact pad abuts a stationary contact and a second configuration at which the contact pad is remote from the stationary contact. An actuator moves the snap action blade between the first and second configurations. A reset spring has a first position which biases the movable contact into one of the first and second configurations, and has a second position at which that biasing does not occur. A reset selector acts to determine whether the reset spring is in the first or second position. A manual reset actuator is provided to move the snap action blade into the one of the first and second configurations when the reset spring is in the second position. Operation of the reset selector selects whether the switch is in an automatic reset mode or a manual reset mode. | ||||||
| 34 | Thermal relay | US216479 | 1988-07-08 | US4859979A | 1989-08-22 | Bruno Jacquet |
| A thermal relay is provided comprising, in a first cavity of a case, bi-metallic strips through which pass currents of a multi-phase network feeding a load through an electromagnetic contactor and, in a second cavity, an electromagnetic sub-assembly including break and signalling switches whose mobile contacts have pivoting axes and actuating points cooperating with a common piece, the whole forming a deformable parallelogram. The second cavity also contains toggle transmission means between the bi-metallic strips and said common piece as well as means for selecting the mode of operation of the switches. Toggle springs are associated with said mobile contacts. | ||||||
| 35 | Symmetric percussion switching device using a head point over-run device | US84730 | 1987-08-13 | US4841106A | 1989-06-20 | Bruno Jacquet; Frederic Noirot; Jean-Pierre Tellier |
| A symmetric percussion switching device is provided using a bistable dead point over-run device including an actuator movable between at least two positions and a control member whose movement causes rocking of the actuator from one to other of the two positions, after passing through the dead point, said device further comprising two switches whose actuating members cooperate with the actuator, respectively in the fractions of the stroke thereof adjacent said positions, said switches then being actuated by percussion so that the drawbacks of the conventional switching devices of this kind are avoided in which the pressure of the mobile contact on the fixed contact is substantially zero in the vicinity of the dead point changeover. | ||||||
| 36 | Thermally-sensible overcurrent protective relay including contact toggle mechanism | US110085 | 1987-10-16 | US4808961A | 1989-02-28 | Yuji Sako; Kiyohide Tsutsumi; Shigeharu Ootsuka |
| In an overcurrent protective relay thermally operable by a bimetal, a movable contact mechanism is employed by utilizing a snap inversion mechanism. A normally-closed contact is employed with having an overtravel to achieve the reliable contacting. A manually resettable lever is also employed to open the normally-closed contact after the overcurrent protective relay has been actuated. | ||||||
| 37 | Device for selectively preventing one or more modes of actuating manual control members equipping an apparatus | US84729 | 1987-08-13 | US4742190A | 1988-05-03 | Bruno Jacquet |
| The invention provides a device for selectively preventing actuating modes of a manual control member equipping the face of the case of an apparatus and able to change over from a first position corresponding to a first function, to a second position corresponding to a second function and, from the first position to a third position corresponding to a third function. It includes a cover mounted for pivoting on the case and able to be applied against said face. This cover allows manual access to said member and includes means for allowing this member to change over from the first position to the third position and preventing it changing over from one to the other of the first and second positions. | ||||||
| 38 | Snap-action switch for a thermal trigger, especially for a motor protection device | US39278473 | 1973-08-29 | US3872417A | 1975-03-18 | HUFSCHMID MAX |
| A snap-action switch for a thermal trigger, especially for a motor protection device, having rest contacts, part of which are stationary and another part of which are mounted at an elastic spring actuated by a bimetallic element for opening the contacts. A stop is movable into the path of the elastic spring in front of its dead-center position. The elastic spring possesses a substantially E-shape and is fixedly held at the ends of both of its outer legs between two stationarily mounted support or bearing plates. The support plate which is closer to at least one stationary contact extends along both of the outer spring legs, closer to at least one contact which is mounted at the elastic spring than the other support plate. The central spring leg is moved with its free end by the bimetallic element past the support plates and the stop is movable into the path of a spring web of the elastic spring and such web is enlarged at its side facing away from the spring legs and carries the aforesaid at least one contact.
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| 39 | Thermally responsive electrical control device for polyphase currents | US3743992D | 1972-08-04 | US3743992A | 1973-07-03 | RAMSEY J; ANDERSON P |
| An electrical control device or overload relay characterized by relatively movable contacts with means for operating the contacts between open and closed positions and comprising an actuating bar, a plurality of pole units, each pole unit comprising an actuating bimetal element including an intermediate element and an outside element on each side thereof, the bimetal elements being spaced apart and disposed on one side of the actuating bar, a pair of levers between the bimetal elements and the actuating bar, one lever having one end portion in pivotal contact with the actuating bar and having another end portion in pivotal contact with the intermediate bimetal element on the side of the bimetal element opposite the actuating bar, and each lever having an intermediate portion in pivotal contact with the corresponding outside bimetal element and on the side thereof facing the actuating bar.
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| 40 | Overload tripping devices for electric motor starting switches | US87838969 | 1969-11-20 | US3638158A | 1972-01-25 | THORNE ARTHUR ROBERT HAMILTON |
| A thermal tripping device for protecting three-phase electric motors against balanced sustained overloads in each phase and against unbalanced overloads, which comprises a quick make and break overcenter spring actuated by a bellcrank connecting slidable trip bars operated by thermal overload elements in each phase. An adjustable reset plunger has a cam formation for enabling hand or automatic reset of the trip mechanism.
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