| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | Electromagnetic relay with a contact spring mounted on an armature | US718247 | 1991-06-20 | US5151675A | 1992-09-29 | Wilfried Biehl; Bernhard Kleine-Onnibrink |
| A relay having a contact spring connected to an armature in which the contact spring is constricted near the free edge of the armature and is broadened into a T-shaped end to provide a double contact or bridge contact relay further includes supporting tabs applied to each of the transverse legs of the contact spring. The supporting tabs are struck by the armature during armature motion directed toward opening of the contacts. This transmits a jolt of force in the immediate proximity of the contact pieces during opening of the contact pieces in order to break any welding or adhesion of the contacts. The relatively weak spring modulus for ensuring closing of the contacts is retained. | ||||||
| 202 | Electromagnetic switchgear | US403689 | 1989-09-05 | US4988964A | 1991-01-29 | Georg Streich; Gunter Gnahn; Kurt Held |
| In an electromagnetic switchgear with movable contact parts held in a movable contact support and forming, with fixed contact parts, opening and closing contacts, the contact support being elastically connected with the armature in such a way that, with the opening contact welded, an onward movement of the movable magnet part is possible without operation of the closing contact, the yoke of the magnet system is also suspended elastically in its closing direction and this elastic suspension, the elastic connection between the armature and contact support and the elasticity of the movable contact parts are matched to one another in such a way that with the opening contact welded and the magnet system closed, the spring excursions of the armature and yoke are approximately the same. | ||||||
| 203 | Fail-safe means for electrical power steering | US408279 | 1989-09-18 | US4972133A | 1990-11-20 | Fumiaki Hirota; Takehiko Fushimi |
| A fail-safe arrangement for an electrical power steering system is directed to providing a control arrangement for a power steering motor which will prevent abnormal operation from having adverse impact. The control system detects the welding or sticking together of closed relay contacs and functions to prevent such a situation by monitoring the motor terminal voltage so as to cut off power above a predetermined value regardless of position of the relay contacts. | ||||||
| 204 | "Contact arrangement for a relay" | US282579 | 1988-12-12 | US4937544A | 1990-06-26 | Erwin Mueller |
| A contact arrangement has a contact spring which is prestressed against a seating edge of an actuation element by a prestress bend. The pre-stress bend lies at an angle of between 0 through 30 degrees relative to the seating edge so that roll-off is produced at the contact location. Such contact arrangement is especially advantageous for switching high-current loads since roll-off at the contact location reduces the welding tendency and makes an easier break-open of the contact when the contact is opening if there is a slight welding of the contacts. | ||||||
| 205 | Method of assembling a dynamoelectric machine | US195852 | 1988-07-15 | US4858303A | 1989-08-22 | Lynn E. Fisher |
| In a method of assembling a dynamoelectric machine, tabs on a rain shroud are received in releasable engagement in notches in a rabbet surface on an end frame of the dynamoelectric machine so as to locate the rain shroud in an assembly position. The cover is arranged in overlaying relation with the tabs to retain the rain shroud against displacement from its assembly position, and the cover is releasably secured to the end frame thereby to define a compartment between the cover and the end frame for accommodating dynamoelectric machine components. | ||||||
| 206 | Switch assembly with redundant spring force and one-piece plunger | US117503 | 1987-11-06 | US4814554A | 1989-03-21 | Joseph Magiera |
| A switch mechanism having redundant spring mechanism for use in rocker type switches. The switch mechanism has a housing which has at least an opening on a top end and a pivot mechanism on two opposing sides thereof. A pair of electrical contacts is located in a bottom end of the housing and an electrically conductive armature establishes an electrical connection between the electrical contacts. A movable rocker extends through the opening in the top end of the housing and has at least first and second opposed sides which have a structure for engaging the pivot mechanism on the housing. A one-piece plunger assembly has at least one bottom end for contacting the armature and a top end rides in a recess in the rocker. At least two coil springs are located between the top end of the plunger assembly and a bottom of the recess. One of the springs is sufficient to cause the plunger assembly to move the armature when the rocker is moved from a first position to a second position. | ||||||
| 207 | Method of manufacturing a switch assembly for an electric motor | US134312 | 1987-12-17 | US4788763A | 1988-12-06 | Lynn E. Fisher |
| A method of manufacturing a switch assembly for an electric motor having a switch operating mechanism for actuating the assembly. The assembly including a switch actuator having at least one slot therein, a switch arm support having an elongate channel and a switch actuator accommodating distal portion, and at least two switch arms having contacts thereon. To practice this method, the actuator is disposed along the distal portion, and one of the switch arms secured to the support is positioned along the elongate channel in overlaying relation with the actuator so as to be laterally confined by the actuator slot. Another of the switch arms secured to the support is positioned in overlaying essentially parallel relation with the one switch arm so as to be laterally confined by the actuator slot. | ||||||
| 208 | Double cammed push-button switch and methodology for operation of the same | US28734 | 1987-03-23 | US4754106A | 1988-06-28 | Frank Walker |
| A compact, double-throw double-pole push-button electric switch is comprised of: a base; four electric terminals fixed to the base; a lower spring retainer pivoted on the base; a push-button key slidingly disposed and captively retain within a housing connected to the base; an upper retainer pivotally disposed within the push-button key and carrying a shorting bar between the opposing pairs of terminals; a coil compression spring captively retained at one end by the lower spring retainer and captively retained at its opposing end by the upper spring retainer; and a pair of double lobe cams connected to the lower spring. As the push-button is depressed, the camming surface within the push-button key comes into sliding contact with one of the two lobes of each of the cams. The cams rotate on the base and bring a fixed lever arm extending from the cam into contact with the shorting bar. The shorting bar is lifted from a contact with the electric terminals and rotated with the upper spring retainer across the gap between the terminals. Simultaneously, the coil spring becomes compressed and straighten. At that point where the cam has rotated sufficiently far so that the coil spring is flexed in the opposing direction, the coil spring will expand thereby snapping the shorting bar across the terminal gap. | ||||||
| 209 | Electric motor with adjustable switch location | US864048 | 1986-05-16 | US4716326A | 1987-12-29 | Lynn E. Fisher |
| Motor has outboard switch compartment with components therein such as a capacitor, thermal protector, terminal board, motor circuit controlling switch assembly, a manual switch, a thermal plastic molded cover for the compartment fastened with axially directed screws, and an optional rain shroud positively positioned on the end shield. The switch assembly is designed to have accurate contact alignment which will be maintained over the life of the switch; a wiping action of the contacts; a high amount of contact travel in terms of percentage of switch actuator travel; protected contact blade arms; and a multiple height mounting feature which assures a more optimum location of the switch at final assembly with respect to the location of the switch operating mechnism. Switch arms are essentially parallel and have contacts positioned directly in line with the actuating line of a switch actuator and an operating mechanism. A switch arm support is a molded synthetic material housing which, with a synthetic material molded switch actuator, provide precise and accurate preloading of the contact arms. Non-stick actuator features are included. Also included is a novel cover attaching approach and method, as well as switch assembly variable height mounting means and methods. | ||||||
| 210 | Electric switch | US746974 | 1985-06-20 | US4692570A | 1987-09-08 | Reinhold Barlian; Martin Fischle; Karl-Heinz Lux |
| An electric switch is provided with a support frame at which several key switch elements are individually clipped on. An actuating front piece is attached at the support frame, which is mounted at a front plate of a switching cabinet or the like. A transmission apparatus with a compression spring is provided between a pressure pin of the actuating front piece and a ram of the key switching elements. The compression spring, the ram and the pressure pin are disposed in an inner space of the support frame receiving the key switching elements. The transmission apparatus provides several individual thrust journals which are resting in the base body and which are moved against the force of the individually coordinated overthrow springs for actuating the key switch elements against the ram. | ||||||
| 211 | Slow make and break action switch | US833956 | 1986-02-27 | US4689451A | 1987-08-25 | John Resh |
| A miniature switch which has reduced susceptibility to welding of contact elements due to high voltage arcing. The switch has parallel resilient spring like current carrying members each having a contact portion mounted adjacent an end thereof. A selectively actuatable switch plunger is adapted to bend the free end of one of the contact members about its fixed support so that the contact portion thereof contacts the contact portion of the other current carrying member, which in turn bends about its fixed support. Upon removal of the operating force of the plunger, the current carrying members spring back to their normal horizontal positions, breaking the electrical contact between the contact portions. The making and breaking actions are made in a slow manner so that the possibility of bouncing between contact elements and the consequent welding due to high voltage arcing, is greatly reduced. By virtue of the mode of actuation, the contact portions of the current carrying members are moved in different arcuate paths during the switching operation so as to provide a wiping action therebetween at the surfaces of contact, which further resist the formation of welds between the contact elements. Auxiliary resilient spring members also are provided adjacent to the current carrying members, so as to provide a force that constantly opposes proximate contact between the contact elements and prevents prolonged build up of welding action. | ||||||
| 212 | Quick-break electrical switch with rectilinearly movable plunger actuator | US674748 | 1984-11-26 | US4634820A | 1987-01-06 | Masayoski Noguchi |
| The electrical switch which may be of a type having a toggle mechanism or a buckling mechanism for achieving abrupt motion of its movable piece. The switch is additionally provided with a mechanism for forcibly disengaging a movable contact formed on the movable piece away from a fixed contact even when the movable contact and the fixed contact are welded together due to heat generated from the contacts. This mechanism may conveniently include a pair of rack gears and a pinion gear so that the force applied to the switch is also transmitted to the disengagement mechanism for, in addition to normal switching action, pulling the movable contact away from the fixed contact. The disengagement mechanism may also be formed of other structure, but a favorable result will be obtained if the disengagement mechanism acts upon a middle portion of the movable piece as far away as possible from the contacts because the heat from the contacts may deform the working end of the disengagement mechanisms which is typically made of synthetic resin. | ||||||
| 213 | Electrical switch construction and method of making the same | US694350 | 1985-01-24 | US4633211A | 1986-12-30 | Harold A. McIntosh |
| A switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof. The switch blade unit comprises a first flexible switch blade having opposed ends one of which is secured to the support and the other of which carries a first part of the contact unit for making or breaking contact with the first fixed contact and a second flexible switch blade having opposed ends one of which is secured to the first switch blade to be carried thereby and the other of which is spaced from the other end of the first switch blade and carries a second part of the contact unit for making or breaking contact with the second fixed contact. The first switch blade having an abutment for engaging the second switch blade with an impact force when the switch blade unit is being moved from the second position thereof to the first position thereof and a contact welded condition exists between the second fixed contact and the second part of the contact unit. | ||||||
| 214 | Safety electromagnetic relay | US754306 | 1985-07-12 | US4625191A | 1986-11-25 | Johannes Oberndorfer; Kenji Ono; Yoshiyuki Iwami |
| A safety electromagnetic relay includes two pairs of contact sets, each pair including a load-driving contact set and a control contact set, and each contact set including a fixed contact and a movable contact spring. The two load-driving contact sets are normally-open contacts and may be connected in series and included in an external load circuit which requires safe interruption. The contact springs of each of the first and second pairs are ganged by a coupling member which is movable independently of a relay armature. The ganged pairs of contact springs are actuated by the armature in such a manner that when one of the load-driving contact sets should become welded in the closed condition, the other load-driving contact set will still open when the armature moves to the inoperative position, but the control contact set associated with the welded load-driving contact set is prevented from returning to its condition corresponding to the inoperative position of the armature. The status of the control contact set may be utilized to signalize failure of the relay. Specifically, the control contact set may be a normally-closed contact which, when the associates load-driving contact set has welded, is retained in its open condition, thereby preventing recharging of a capacitor that may be required for re-energization of the relay coil. | ||||||
| 215 | Double pole circuit breaker | US770640 | 1985-08-28 | US4616117A | 1986-10-07 | Heinz Kleine |
| A double pole switching device has a plunger which is longitudinally movable in a housing against a spring force and has at least one contact bridge provided with a movable contact switch to operate with immovable contacts, and an element is provided for forcibly opening of adhering or welded contacts and includes a U-shaped bracket with a connecting web located between the contact bridge and a contact pressure spring and two legs cooperating with stepped extensions in the housing so that the bracket and the contact bridge over a first part of the stroke of the plunger are forcibly taken along, and the legs of the bracket over a further part of the stroke are spread outwardly and release the plunger. | ||||||
| 216 | Electric motors and method of manufacturing and operating same | US522620 | 1983-08-12 | US4593163A | 1986-06-03 | Lynn E. Fisher |
| Motor has outboard switch compartment with components therein such as a capacitor, thermal protector, terminal board, motor circuit controlling switch assembly, a manual switch, a thermal plastic molded cover for the compartment fastened with axially directed screws, and an optional rain shroud positively positioned on the end shield. The switch assembly is designed to have accurate contact alignment which will be maintained over the life of the switch; a wiping action of the contacts; a high amount of contact travel in terms of percentage of switch actuator travel; protected contact blade arms; and a multiple height mounting feature which assures a more optimum location of the switch at final assembly with respect to the location of the switch operating mechanism. Switch arms are essentially parallel and have contacts positioned directly in line with the actuating line of a switch actuator and an operating mechanism. A switch arm support is a molded synthetic material housing which, with a synthetic material molded switch actuator, provide precise and accurate preloading of the contact arms. Non-stick actuator features are included. Also included is a novel cover attaching approach and method, as well as switch assembly variable height mounting structure means and methods. | ||||||
| 217 | Electromagnetic contactor | US644302 | 1984-08-27 | US4565987A | 1986-01-21 | Shigeharu Otsuka; Yuji Mizuno |
| An electromagnetic contactor having normally open and normally closed contact pairs 22, 26 includes a movable crossbar 12 having apertures 14 each defining two guide surfaces 18a, 18b; 18c, 18d inclined at different angles for guiding spring biased movable contact members 16 disposed in the apertures. These inclined surfaces serve to jam the crossbar against the base 10 of the contactor when the crossbar is moved in a direction to open fused contact pairs during the initial spring decompression movement of the crossbar, to thereby prevent the normally open and normally closed contact pairs from being closed at the same time. | ||||||
| 218 | Thermostat with bimetal compensating element | US393810 | 1982-06-30 | US4495481A | 1985-01-22 | Colin D. Hickling; Marvin Barnes |
| An electric switch that is temperature responsive is provided for operation in a temperature range that is substantially above normal ambient temperature. A pair of contacts are mounted on respective first and second spring members. The second spring member includes a bimetal compensating portion at the distal end thereof. The second contact is mounted on the compensating portion so that upon increasing the temperature of the switch structure, the second contact moves toward engagement with the first contact to eliminate initial overshoot and to compensate for variable contact weld size between the contacts. An operating bimetal assembly in direct contact with the heated surface being monitored is used to break the contacts. The bimetal assembly includes a bimetal base element and a metal element butt-welded to the distal end thereof. The metal element carries a ceramic button to engage the first or upper spring member to move the first contact. An adjusting rod engages a dimple on the second spring member adjacent the point where the bimetal compensating portion is butt-welded to the spring member. The operating bimetal assembly and the two spring members are mounted and separated by an insulator stack. In an alternative embodiment, the bimetal compensating portion is mounted on the end of a full length second spring member. The compensating portion extends back along the second spring member and directly engages an adjustment rod. As the temperature of the bimetal compensating portion is increased, the second contact moves toward engagement with the first contact in the same manner. | ||||||
| 219 | Electrical slide switch | US444337 | 1982-11-24 | US4472612A | 1984-09-18 | Leopold Hinterberger |
| An electrical slide switch comprising spring-action mechanics (5) overcomes the problems of fused contacts (3,6) caused by high starting currents by the provision of disconnecting mechanics (2,9) which positively separate the rocking arm (3) from its associated contact (6) as the switch is turned off. Preferably the disconnecting mechanics does not act on the rocking arm until shortly before the switch-off end position of the slide switch is reached. The disconnecting mechanics preferably consists of an insulating material lever (9) which is pivoted by a pin (11) of the slide member (2) against the force of a spring arm (22), the insulating material lever (9) having a lug (12) which protrudes into the path of pivoting movement of the rocking arm to positively move the same. | ||||||
| 220 | Snap switch | US957055 | 1978-11-03 | US4216358A | 1980-08-05 | Jean-Yves Brozille |
| A snap switch comprises a control button, a control rod slidable with the control button via a spring, two pairs of contacts associated, respectively, with two pairs of terminals, the two contacts of each pair of contacts being connectable by resilient conducting means under the action of a setting spring fixed to the control rod and to these resilient conducting means. The two contacts of one pair of contacts are borne by two pivotable conducting plates, biased by resilient means for connecting the two contacts borne by the conducting plates to their respective terminals. The conducting plates can be pivoted under the action of the control button and against the action of the resilient biasing means for disconnecting the two contacts borne by the conducting plates from their respective terminals. | ||||||
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