Spring Biased Patents (Class 200/325)
  • Patent number: 10734764
    Abstract: Apparatus are disclosed for vehicle connectors for monitoring connection with trailer connectors. An example connector of a vehicle for coupling a trailer to the vehicle includes a wall defining a cavity to receive a trailer connector, a seal to engage the trailer connector when the cavity receives the trailer connector, and a first trailer-connection sensor disposed in the seal to monitor engagement of the trailer connector with the seal to identify a secure connection with the trailer connector.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: August 4, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Mahmoud Yousef Ghannam, Joel Allen Pittenger, Aed M. Dudar, Swadad A. Carremm
  • Patent number: 10535480
    Abstract: A gas-insulated circuit breaker is disclosed that includes a housing defining a gas volume for a dielectric gas; a nominal contact system and an interruption contact system with a pin and a tulip that they are electrically connectable to and disconnectable from one another along an axis. The circuit breaker includes a guiding assembly including a guide sleeve and a guiding member that is coupled to the pin; and a gas damping assembly configured to damp a breaking movement of the pin by compressing the dielectric gas in an absorber volume. A movable absorption element and the absorber volume are arranged radially inward of the guide sleeve.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: January 14, 2020
    Assignee: ABB Schweiz AG
    Inventor: Guenter Steding
  • Patent number: 10437277
    Abstract: A footswitch for a medical instrument, with a housing, and with an elastically deformable suction cup arranged in the housing, where a negative pressure is generated in the suction cup by means of an evacuation device in order to secure the housing to a floor surface. In order to create a footswitch which is suitable for a medical instrument and which, while having a simple design and being easy to handle, ensures that the footswitch is secured in a fixed position on a floor surface. The suction cup is elastically extensible via the evacuation device in order to generate the negative pressure by enlargement of the volume enclosed by the suction cup.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 8, 2019
    Assignee: Karl Storz SE & Co. KG
    Inventor: Bernd Emmerich
  • Patent number: 10262815
    Abstract: A button locking device includes a panel, a button installed on the panel, a bottom plate installed under the button, a first cylinder spring installed between the button and the bottom plate for resetting the button, an actuator assembly installed between the panel and the bottom plate, a toggle member installed under the button and pushed by the actuator assembly to rotate from a first position to a second position and rotated from the second position to the first position. At the first position, the toggle member stops the button from moving downward. At the second position, the toggle member allows the button to move downward. The present invention has the features of simple structure, convenient operation, low power consumption, high safety, and broad scope of applicability.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 16, 2019
    Assignee: Dongguan Chongwei Metals & Plastic Products Factory Co., Ltd.
    Inventor: Mengxiao Yuan
  • Patent number: 9245705
    Abstract: The fuse bypass jumper of the present invention bridges the upper and lower fuse terminals of a high-voltage transmission line cut-out box so as to bypass the fuse element. The jumper comprises lateral upper and lower arms connected by a longitudinal jumper bar. The jumper arms and bar are made of a heavy gauge conductor rated for at least 100 Amps. With the jumper in place, the fuse element can be opened, removed and/or replaced without interrupting the transmission line circuit through the cut-off box, since the jumper now provides a bypass around the fuse. Since the bypass conductive path constitutes a heavy gauge, high-amperage bar conductor, this jumper can carry a much larger current load than flexible wire-based jumpers.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: January 26, 2016
    Inventors: Ryan Beers, Gary Patrissi
  • Publication number: 20140318935
    Abstract: An actuator that includes a shelf having a pivot cone, a first member, a second member, a trigger pin and a trigger lever latch. The first member includes a weight, a first shaft extending upwardly from the weight and through an opening in the pivot cone, and a first plate affixed to the first shaft. The first plate is supported by the pivot cone. The second member includes a second plate resting on the first plate and a second shaft extending upwardly from the second plate. The trigger lever latch includes a first portion connected to the second shaft and a second portion extending upwardly at an angle away from the first portion. The trigger pin has an engagement surface. The trigger pin is movable between an operational state and a tripped state. The second end of the trigger lever latch is engaged with the engagement surface.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 30, 2014
    Inventor: Colin Johnstone
  • Publication number: 20140110233
    Abstract: A housing having activated structure by remotely activates an embedded switch. The case includes a front panel having an inner and outer surface, an operation button, a first elastic member, a latch member having a lead-in portion at one end and an activating portion at the other end, and a lever. The operation button is arranged on the outer face and contacts the lead-in portion. The lever pivotally connects the front panel and selectively contacts the latch member and the switch. When the operation button is pressed, the first elastic member is compressed and the lead-in portion shifts accordingly. The activating portion further applies a force to the lever which then tilts toward the switch, allowing activation. When the first elastic member decompresses, a force applies to the latch member and the latch member returns to the original position.
    Type: Application
    Filed: June 5, 2013
    Publication date: April 24, 2014
    Inventor: PO-YU CHENG
  • Publication number: 20140008193
    Abstract: A switching apparatus for closing and/or opening an electric circuit. It has an actuating unit and a bistable mechanism. The actuating unit is linearly movable between a first end position in which the switching apparatus is in a closed state and a second end position in which the switching apparatus is in an open state. The linear movement defines an axis. The bistable mechanism is arranged to ensure that the actuating unit is held in either of the end positions. The bistable mechanism includes a cam means mechanically connected to the actuating unit and at least one cam follower. The invention also relates to a use of the invented apparatus.
    Type: Application
    Filed: August 23, 2013
    Publication date: January 9, 2014
    Inventors: Tomas Borg, Daniel Johansson
  • Publication number: 20130313091
    Abstract: An improved operating mechanism of a molded case circuit breaker comprises a housing, a fixed contact means, a moving contact means, a rotor means, and a mechanism module. The mechanism module comprises side plate means, trip plate means, a lower link means, an upper link means, a latch link means, a fork link means, a spring pin means, a floating pin means, navigation pin means, reset roller pin means and plurality of spring means.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 28, 2013
    Applicant: LARSEN & TOUBRO LIMITED
    Inventors: Sujit S. Patwardhan, Rubin Cholera, Yogesh N. Patil, Arvind L. Kumar, N. Prabhu
  • Patent number: 8534160
    Abstract: A retractable control device for a household electrical appliance includes a knob movable against an elastic member within an aperture or seat of a control interface of the appliance. The knob is configured to assume two working positions including a first position in which the knob is seated in the aperture and a second position in which the knob extends outwardly therefrom. The knob cooperates with a control member for a functional element of the appliance, such as an electrical resistance heater or microwave generator of an oven, or a gas burner of a cooking hob. The device also includes a cylindrical element disposed and fixed in the aperture of the control interface about the knob. The cylindrical element contains the knob when the knob is in its first position and guides its movement within the aperture along a central longitudinal axis thereof.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: September 17, 2013
    Assignee: Whirlpool Corporation
    Inventors: Marco Giuliani, Michele Venezia, Tomasz Rydel, Marcin Mazurek, Sacha Mello
  • Publication number: 20130215724
    Abstract: A pushbutton of a portable apparatus is locked against inward axial movement by engagement with a locking member when the locking member is unthreaded a distance A from the apparatus body and brought into abutment with a fixed stopper member. The pushbutton is released from its locked state when the locking member is threaded into the apparatus body and brought out of abutment with the stopper member and into abutment with the apparatus body. In its unlocked state, a head portion of the pushbutton is axially spaced a distance B from an opposedly facing portion of the locking member, wherein A?B.
    Type: Application
    Filed: January 10, 2013
    Publication date: August 22, 2013
    Applicant: SEIKO INSTRUMENTS INC.
    Inventor: SEIKO INSTRUMENTS INC.
  • Publication number: 20130118872
    Abstract: A switch lock for an electrical switching device, e.g. a circuit breaker, motor circuit breaker, or isolating switch, which is an improved switch lock, that can be made with fewer parts and at lower cost. Furthermore, an electrical switching device can contain this switch lock. Due to an appropriate arrangement of the spring coupling points and an appropriate spring dimensioning, as well as an appropriate geometric design of the contact piece holder, this switch lock can do without separate lock and contact pressure springs, insofar as their functions are combined in one spring.
    Type: Application
    Filed: July 21, 2011
    Publication date: May 16, 2013
    Applicant: EATON ELECTRICAL IP GMBH & CO. KG
    Inventors: Gregor Fleitmann, Volker Heins, Detlef Koch, Bogdan Zabrocki
  • Patent number: 8253045
    Abstract: A keypad assembly is used for an electronic device. The keypad assembly includes a support member, a plurality of key strips and a plurality of elastic members. The support member defines a plurality of receiving grooves each with an angled bottom surface. The key strips are received in the receiving grooves. The elastic members are received in the receiving grooves, and each elastic member abuts a corresponding key strip providing a biasing force to extend a portion of the key strips from the receiving groove.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: August 28, 2012
    Assignee: FIH (Hong Kong) Limited
    Inventors: Chung-Yu Liu, Wang-Hung Yeh
  • Patent number: 8106317
    Abstract: A rotary control device includes a body, a knob rotatably provided on the body, a push button provided on a side portion of the knob so as to be depressed, a lock member that moves in response to a depressing operation of the push button, and a lock portion provided in the body. The lock member is retained to the lock portion of the body so as to restrain a rotary operation of the knob before the push button is depressed. When the push button is depressed, the lock member is moved to a space where the lock member is movable in conjunction with the rotary operation of the knob so that a restraint of the rotary operation of the knob is released.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: January 31, 2012
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Sadaaki Kitazumi
  • Patent number: 7870810
    Abstract: A rotary knob for an electrical system includes a body containing a rotary maneuvering member which actuates a cam-driving part and bears one or more electrical units. A cup is defined between an outer cylindrical flange of the body and an inner cylindrical sleeve, and contains a spring either of a helical type for urging a sliding ring separate from the driving part, or of a torsion type to return the maneuvering member. The ring provides a sensitivity function. The cylindrical sleeve defines in a central opening thereof a centering seat of the shank of the maneuvering member.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: January 18, 2011
    Assignee: Schneider Electric Industries SAS
    Inventors: Hugues Da Dalt, Patrice Thizon, Bertrand Fruchard
  • Publication number: 20080202910
    Abstract: A latching device has a resetting device, a triggering device for producing a triggering force which acts in a first direction, a compression element, and an upper and a lower supporting element which, in the latched state, are arranged one above the other in a housing and are connected to each other by at least one coupler such that they are at a distance from each other, and which, in the latched state, are acted upon, to provide a spring-type drive, by a compressive force applied along a line of action via the compression element. The lower supporting element, loaded by the compressive force in the latched state, is deflected against a stop and is held in that position. The paths of movement of the upper and of the lower supporting element are defined by the housing by way of guides. The path of movement for the lower supporting element runs substantially perpendicular to the path of movement of the upper supporting element.
    Type: Application
    Filed: October 24, 2006
    Publication date: August 28, 2008
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Gunnar Lutzke
  • Patent number: 7223927
    Abstract: A locking switch assembly includes a cam, a plunger, and a locking mechanism. The cam is rotatably attached to a frame assembly and an end of the plunger is constructed to follow a contour of the cam. The plunger is movable between a plunger first position and a plunger second position. A pin is biased against the plunger and movable between a pin first position and a pin second position and locks the plunger in the plunger second position when the pin is in the pin second position. A breakable arm prevents movement of the plunger from the plunger second position to the plunger first position unless a force above a selected amount is applied to the cam when the plunger is in the plunger second position.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 29, 2007
    Assignee: EJA Limited
    Inventor: Julian Poyner
  • Patent number: 6924446
    Abstract: A circuit breaker includes a housing and an operating mechanism having a cross bar supported by a first housing surface and moving in an arcuate path between open/tripped and closed positions, a pivotally mounted cradle including a latch, and pivotally mounted primary and secondary latches. The primary latch includes a pivot, an opening and a free end. The cradle latch rests within the opening when the contacts are not tripped open. The secondary latch includes a pivot and a surface. The latches are between a second housing surface and the cross bar in a first position. The cross bar is offset from the latches in a second position. The secondary latch surface and pivot are between the second housing surface and the primary latch pivot. The secondary latch surface engages the primary latch free end when the contacts are not tripped open and maintain the cradle latch within the opening.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: August 2, 2005
    Assignee: Eaton Corporation
    Inventors: Douglas C. Marks, David A. Parks, Robert M. Slepian, Amelia M. Stay, David E. Little
  • Patent number: 6867672
    Abstract: A switching device includes a latching mechanism and is cheap to produce and easy to assemble. To this end, the construction is essentially formed from a three-part modular unit including metallic material, and has a spring which supports the back-latching of the latching mechanism, and forces which extend essentially in one plane in the latching mechanism.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: March 15, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventor: Winfried Vierling
  • Patent number: 6479770
    Abstract: An electrical switch includes a switching contact arrangement, an interchangeable release block and a locking element. A first operating surface is formed on the locking element, which can be moved from a locked position to an unlocked position. The first operating surface allows the release block to be secured from being removed from the switch, when the locking element is in its locked position.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: November 12, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joerg-Uwe Dahl, Marc Liebetruth
  • Patent number: 6166344
    Abstract: A circuit breaker having a crank for coupling a switching mechanism to the contact pole structure is presented. The crank has a pair of cam surfaces which cooperate with a blocking lever to restrict movement of the operating handle when the contacts of the circuit breaker are welded. The blocking lever is arranged such that it does not interfere with the handle under normal operating conditions.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: December 26, 2000
    Assignee: General Electric Company
    Inventors: Roger N. Castonguay, Dave S. Christensen, Girish Hassan
  • Patent number: 6054661
    Abstract: An air circuit breaker bell alarm lock-out accessory interacts with the circuit breaker closing system to prevent charging of the circuit breaker closing spring until and unless the bell alarm module has been manually reset. A lockout slide on the bell alarm module support interacts with the circuit breaker closing spring operating link to prevent the recharging of the closing spring.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: April 25, 2000
    Assignee: General Electric Company
    Inventors: Roger N. Castonguay, Dean A. Robarge
  • Patent number: 5931289
    Abstract: A circuit breaker includes a releasable retaining mechanism for releasably retaining a movable contact arm of the circuit breaker to prevent "sneak" during movement of the contact arm to the closed position, as well as, to prevent "bounce" during movement of the contact arm to the open position. The releasable retaining mechanism preferably includes a hook member rigidly secured to the movable contact arm and a retaining spring secured to the operating mechanism of the circuit breaker. The hook member engages the retaining spring when the movable contact arm is in the open position. The releasable retaining mechanism further includes a release finger extending from the operating mechanism adjacent the retaining spring, the release finger being positioned to contact the retaining spring when an operating handle of the circuit breaker is moved to actuate the operating mechanism in order to place the movable contact arm in a closed position.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: August 3, 1999
    Assignee: Eaton Corporation
    Inventor: Yu Wei Chou
  • Patent number: 5886603
    Abstract: A detent mechanism comprising a support member having a fixed seating member comprising opposite sides; a first spring for exerting a first spring force, disposed between one side of the fixed seating member and a first sliding member, further comprising a second spring member exerting a second spring force less than said first spring force, disposed between the other side of said fixed seating member and a second sliding member, whereby the forces of the springs are directed to operate on said first and second sliding members in opposite directions. A push button can apply an external force to the first sliding member to move it from a first position relative to the fixed seating member to a second position against the action of said first spring force. A detent mechanism connects the first and second sliding members when the first sliding member is in its second position and the second slidable member is in a first position.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: March 23, 1999
    Assignee: Power Breaker PLC
    Inventor: Simon Powell
  • Patent number: 5874699
    Abstract: A molded case circuit breaker has a moving conductor assembly which includes a modular carrier assembly incorporating a plurality of spring biased contact cam members each of which engages contact pressure lobes on a pair of contact arm laminations to provide contact pressure. In response to the magnetic repulsion forces generated by a short circuit, the springs compress allowing the cam members to pivot and side step the contact pressure lobes so that the contact arm blows-open with little resistance. The cam members and springs are preassembled in a transverse channel in the carrier body and laterally retained in place by side plates for easier pivotal attachment of the contact arm laminations to the lobes on the side plates. The side plate lobes raise the contact arm relative to the mass of the carrier to reduce eddy current heating and provide a positive off indication for welded contacts by restricting movement of lower toggle links of the operating mechanism which are coplanar with the side plates.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: February 23, 1999
    Assignee: Eaton Corporation
    Inventors: Henry Richard Beck, Kenneth Martin Fischer, David Edward Little, Joseph Bell Humbert, Roger William Helms
  • Patent number: 5345372
    Abstract: A switchable light fixture which may be usefully be employed as an interior automotive lighting fixture includes an insulating plate defining an interior cavity in which a sliding piece is disposed and supports an opposed pair of lamp sockets for holding a lamp. A plurality of stationary parallel contacts (at least two of which form a pair of lateral stationary contacts, and one of which forms a middle stationary contact) are positionally held by means of recessed surfaces or channels defined between respective upright supports. A pair of lateral plugs each formed by an outwardly bent terminal end portion of a respective one of the lateral stationary contacts is positioned in a respective pair of the recessed surfaces or defined channels so as to be disposed over the lateral pair of stationary contacts, with a middle plug being portioned between the pair of lateral plugs.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: September 6, 1994
    Assignee: Kabushiki Kaisha T AN T
    Inventors: Tsunesuke Takano, Kouichi Sinzawa
  • Patent number: 5329163
    Abstract: The present invention relates to an auto-switch which is used for a control circuit of a power window for moving automobile window glass up and down using an electric window motor, and has a manual/automatic contact, wherein the auto-switch is operably by a single operating knob. In the auto-state, the auto-switch can mechanically retain the manual/automatic contact at a closed state, and can always reset the operating knob to the neutral position.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: July 12, 1994
    Assignee: Toyo Denso Kabushiki Kaisha
    Inventors: Hiroshi Satoh, Noboru Kamiya, Toru Tanaka, Sadayoshi Oshima, Minoru Mohri
  • Patent number: 5321218
    Abstract: An electrical connector, for example a lampholder comprises an on/off switch mechanism including a push bar. The connector further comprises a locking arrangement including an interlock member which extends to the pushbar and moves into and out of cooperation with an aperture in the pushbar. When a cooperating device, for example a lamp, is inserted into the connector the interlock member moves axially into the lampholder to a position at which the pushbar is free to move between "on" and "off" positions. When no cooperating device is connected, the interlock member prevents movement of the pushbar. The pushbar and the interlock member include respective inclined surfaces arranged such that the pushbar will be moved to the "off" position when a cooperating device is removed from the connector.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: June 14, 1994
    Assignee: First Thought Development Ltd.
    Inventor: Francis Vause
  • Patent number: 5309317
    Abstract: The sliding mechanism (50) of a drawout type switchgear has a first slide arm (5) which is slidably supported by the upper and lower support rails (3A, 3B) and a second slide arm (7) which is slidably supported by the first slide arm (5). The second slide arm (7) is interlocked with the first slide arm (5) by a lock plate (12) when the first slide arm (5) is sliding from a connected position to a final drawout position of the first slide arm (5). When the first slide arm (5) reaches the final drawout position of the first slide arm (5), the interlocked second slide arm (7) is released by rotation of the lock plate (12).
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: May 3, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Takayoshi Ishikawa
  • Patent number: 5195632
    Abstract: A force-storing actuator for connection to a rotor of a step transformer has a central upright axle connected to the rotor and rotatable about its axis, and upper and lower input wheels fixed rotationally to each other and rotatable on the shaft about the axis. Respective upper and lower drive elements fixed underneath and atop the input wheels flank upper and lower force-storing levers rotatable on the shaft between the input wheels and juxtaposed with the input wheels. Each lever is angularly engageable with the respective drive element. A spring has outer ends connected to the two levers offset from the axis. An output wheel fixed on the shaft above the upper input wheel carries an output element fixed on the shaft axially between the levers and engageable angularly with both of the levers.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: March 23, 1993
    Assignee: Maschinenfabrik Reinhausen GmbH
    Inventor: Rolf Lauterwald
  • Patent number: 5055644
    Abstract: In a snap locking mechanism for rotary switches an operating shaft (4) operable by a switch handle can be rotated against the force of an energy-storage mechanism and each lock-in position is occupied with at least partial release of the energy-storage mechanism. The energy-storage mechanism is formed by axially acting compression springs (8) and acts on a driver ring (6) exhibiting slopes in the peripheral direction which interacts with another driver ring (13), couplable with the operating shaft, exhibiting a corresponding counterprofile with slopes. A coupling for dragged slaving (28, 29) is provided between the two driver rings (6, 13). Handle-side driver ring (6) carries stops (11) on its front facing away from these slopes, which interact with counterstops (12), integral with the housing, when they reach the snap position of the locking mechanism.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: October 8, 1991
    Assignee: Hubert L. Naimer
    Inventor: Gottfried Alsch
  • Patent number: 5045648
    Abstract: A lock having depending sides with holes therein is snap fit attached to a rocker actuator by causing the sides to straddle the actuator and the holes to receive beveled lateral tabs on the actuator, the holes being longer than the tabs to permit and define sliding movement of the lock on the actuator. Four feet depend from the depending sides of the lock within a housing opening in which the actuator is pivotally mounted to abuttingly align with corresponding abutments in the housing on opposite sides of the pivotal axis of the actuator, preventing rotational movement of the actuator when the lock is in a first position with respect thereto under the bias of a compression spring. The actuator is released by sliding the lock against the bias of the spring to move the feet radially offset from the abutments, thereby permitting rotational movement of the actuator in either direction, actuating corresponding switch contacts.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: September 3, 1991
    Assignee: Eaton Corporation
    Inventor: Eric W. Fogleman, Sr.
  • Patent number: 5003139
    Abstract: An accessory module (104) for use with a circuit breaker (10) is configured for mounting to the breaker, and has a rotor (142) which follows the movement of the circuit breaker blade (24) in the breaker by means of a coupling member (118) passing through a passage (110) in the circuit breaker wall. A portion of the rotor is configured as a cam (162) operating a switch (152) in the module, the switch thus giving a reliable indication of the position of the breaker blade. The breaker is preferably of the type which has a trip lever (50) carried on the breaker blade and mounted for slight movement thereon, and the rotor is preferably coupled to the trip lever. A solenoid (148) within the accessory module is disposed to rotate the rotor when energized, this rotation being coupled to trip the breaker to provide for remote tripping. Since the trip lever is carried with the breaker blade, the blade position is monitored by the switch.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: March 26, 1991
    Assignee: Square D Company
    Inventors: Thomas A. Edds, Willard J. Rezac, Thomas O'Carroll
  • Patent number: 4968863
    Abstract: An assembly frame having first and second frame plates secures the movable parts of a breaker assembly together for ready assembly of the breaker assembly in a housing. A pivot pin supports the trip lever between the frame plates. The movable contact carrying blade has an elongated hole through which the pivot pin passes, the elongated hole forming a floating point for the pivot pin.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: November 6, 1990
    Assignee: Square D Company
    Inventors: Willard J. Rezac, Thomas A. Edds, Lowell D. Smith, James Early, Martin Donnellan
  • Patent number: 4904833
    Abstract: A switch device comprising an operating knob adapted to be selectively operated according to an operational amount and permit an automatic restoring condition and an automatic locking condition, a first selector member interlocking with the operating knob for effecting a switching operation of contacts, a second selector member engageable with the first selector member for selectively effecting the automatic restoring condition and the automatic locking condition of the operating knob, a switch wafer provided in opposed relationship to the first and second selector members, a locking member adapted to restrict movement of the second selector member, and a resilient member for biasing the locking member toward the second selector member. With this structure, the automatic locking condition may be maintained without the use of a solenoid, thereby reducing the power consumption and heat generation.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: February 27, 1990
    Assignee: Alps Electric Co., Ltd.
    Inventors: Hiroyuki Sato, Yujiro Shimoyama
  • Patent number: 4860147
    Abstract: A safety device to protect a piece of domestic electrical apparatus connected by means of a flexible supply lead to a plug to be attached to a conventional mains outlet. Between the pins of the plug and the exposed electrical working components of the apparatus is provided an on-off switch which will isolate the electrical operating components from the mains supply when the switch is in the "off" position. Sensor means are positioned within the piece of domestic electrical apparatus adjacent any exposed electrical components and control means for detecting a path of conduction between the sensor means and those exposed electrical components. Magnetically controlled release means including a permanent magnet and an electrically induced magnetic field in opposition thereto, preferably a DC motor provides movement when energized by the control means when the latter detect a path of conduction.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: August 22, 1989
    Assignee: Simatelex Manufactory Company Limited
    Inventor: Kwok W. Fai
  • Patent number: 4849584
    Abstract: A high-voltage switching device is provided having an insulating base member mounted to a panel such that a wiper arm assembly of the switching device is accessible from the front of the panel for pivoting a switching member between open and closed positions. Preferably, the switching member is a conductive rod having a portion coiled about a primary terminal assembly of the switch such that a first end of the conductive rod may be pivoted about the axis of the coiled portion between the open and closed positions. Although the switch is intended for high-voltage applications, the conductive rod is of sufficiently small gauge so as to allow for the manual pivoting of the rod without the need of leveraging linkages. The insulating base member of the switching device provides effective electronic isolation of the terminal assemblies and the conductive rod from one another and from the ambient environment of the switch such that a protective insulating housing is unnecessary.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: July 18, 1989
    Assignee: McGill Manufacturing Company
    Inventor: John Resh
  • Patent number: 4760224
    Abstract: An air circuit interrupter which comprises a first cam driven by the operating handle which, through a charge lever, charges an energy storing spring, a link mechanism for transmitting the stored spring force to a contact operating mechanism, a contact-opening-waiting mechanism for preventing the link mechanism from driving the contact operating mechanism to open when the contact is closed by an action of a spring force of a contacting pressure spring in the contact operating mechanism and an electromagnetic repulsive force acting on a current carrying member due to a current above a predetermined value, and an OFF operating member for opening the contact by releasing the contact-opening-waiting state of the contact-opening-waiting mechanism. The contact-opening-waiting mechanism comprises a second cam connected to the link mechanism and a trip latch having an engaging roller for engaging the second cam and an engaging portion for engaging the OFF operating member.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: July 26, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yasusi Genba
  • Patent number: 4742200
    Abstract: For cocking an energy accumulator, an actuating device comprises a ratchet wheel with teeth as well as a reciprocating transport ratchet. For maintaining the cocked position of the energy accumulator, a cam wheel and blocking lever which can be braced against a blocking member via a ratchet lever are provided. Due to a wedge-like cooperation between a working surface of the cam wheel and a projection of the blocking lever, the blocking lever is transferred from its rest position into a blocked position if the deadcenter position of the cam wheel is exceeded. In the process, the transport ratchet is lifted from the teeth of the ratchet wheel by means of a striking surface of the blocking lever.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: May 3, 1988
    Assignee: Siemens Aktienfesellschaft
    Inventors: Ulrich Marquardt, Ralf Seebold
  • Patent number: 4739138
    Abstract: The rotary electrical switch 1 which is mounted on a circuit plate 7 furnished with a printed circuit comprises a switch wheel 4 which is rotatably supported on the circuit plate 7 and whereat a contact bridge 48 is inserted into a pocket 46. On rotation of the rotary switch 1, said contact bridge 48 connects and/or disconnects at least two conducting paths of the printed circuit. Shaped at the switch wheel 4 is a pivot pin 17 which penetrates the circuit plate 7 and which is secured by a base member 5 to the circuit plate 7 on the said's bottom side opposite to the printed circuit. The switch wheel 4 includes catch-type recesses 42, with a resilient switching element 32 engaging into each one recess depending on the position of rotation of the switch wheel 4. The base member 5 urges via the switch wheel 4 the contact lugs 48 resiliently against the circuit plate 7, additionally forms the catch-type element 40 and simultaneously couples the switch wheel 4 and the circuit plate 7.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: April 19, 1988
    Assignee: Braun Aktiengesellschaft
    Inventor: Jurgen Wolf
  • Patent number: 4730091
    Abstract: An alarm device is provided consisting of a non-conductive base with two conductive inserts, a latch mechanism integral to a base and a trip device which is connected to a coil spring. A set of L-shaped legs are attached to each end of the coil spring and one leg coacts with the latch mechanism and is released when the trip device is activated, and the other leg coacts with one of the inserts and the coil spring coacts with the other when the trip device is activated.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: March 8, 1988
    Inventor: Glenn Hiller
  • Patent number: 4729051
    Abstract: An apparatus has a part which can be moved to an operating position by an actuating device, in response to movement of a button to an on position. Upon movement of the part to its operating position, a latching member directly associated with the part latches the button in its on position. Upon sensing a predetermined condition in the apparatus, a control member prevents the transmission of the actuating movement by the actuating device to the part, and a user becomes aware that the part has not moved to its operating position because the button does not become latched in its on position.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: March 1, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Heribert Hutterer, Johann Veigl
  • Patent number: 4720614
    Abstract: A motor protection electric switch, and the like, in which contacts are opened and closed by means of a switch latch equipped with an "on" button and an "off" button, with the different positions of the "on" button indicating the switching state of the contacts. A two-armed blocking lever is rotatably mounted on a latch housing of the switch, and disposed between the contact member carrier and the "on" button. One arm of the lever is latched with the "on" button while the other arm thereof is supported at the contact member carrier as long as the contacts are not opened sufficiently far to open a circuit through the contacts of the switch.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: January 19, 1988
    Assignee: Licentia Patent-Verwaltungs GmbH
    Inventor: Hans-Jurgen Wulff
  • Patent number: 4707574
    Abstract: An electric disconnect switch having fixed and movable contacts includes a latch mounted for limited oscillating and sliding movement on the movable contact and operable by a manual operating member, a ramp fixedly mounted on the fixed contact and having a latching surface engageable by the latch, a biasing device arranged to bias the latch in a direction to maintain the latch in engagement with the latching surface, together with a low friction device mounted on the movable contact and engageable with a part of the latch during a switch closing operation to impart closing movement to the movable contact in response to closing movement of the operating member.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: November 17, 1987
    Assignee: Kearney-National, Inc.
    Inventor: Wayne A. Smith
  • Patent number: 4703141
    Abstract: An actuation attachment includes a central slider formed at one end with a push button and at the opposite end with a holding piece for an actuator. The slider is inserted in a cylindrical sleeve so as to be movable in axial direction either relative to or in conjunction with the sleeve but engaging it for joint rotation. The sleeve is inserted in a cylindrical bore of a housing to move in axial direction and to rotate about its central axis. The slider is formed with an axially directed slot for accommodating opposite rear ends of two locking pins which are guided in corresponding radially directed bores in the sleeve. The locking pins are urged one from the other by a biasing spring. The cylindrical bore of the housing is formed with axially directed first and second guiding grooves for engaging rounded front ends of the locking pins. Each of the guiding grooves is separated by an inclined stopping surface and a radially directed stopping surface.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: October 27, 1987
    Assignee: Square D Starkstrom GmbH
    Inventor: Heinz Grunst
  • Patent number: 4683357
    Abstract: A stored-energy switch operating mechanism is provided that includes a charging arrangement that reduces the peak forces required during the charging of the operating mechanism to store operating energy. The charging arrangement is responsive to a unidirectional input to accomplish the charging of the operating mechanism. In an illustrative arrangement, the operating mechanism includes a closing spring and an opening spring. During charging, the springs are sequentially charged prior to any switch-closing or switch-opening operation. The operating mechanism does not require the detachment of any components during either charging or switch operation. The charging arrangement, in an illustrative embodiment, is responsive to a unidirectional rotary input to a charging crank to sequentially drive a charging element in a first direction and then in a second, opposite direction. In the first direction, a first of the springs is charged and latched. In the second direction, the second spring is charged and latched.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: July 28, 1987
    Assignee: S&C Electric Company
    Inventor: John C. Opfer
  • Patent number: 4677269
    Abstract: An isolation switch has at least one first cam attached to a blade of the isolation switch, the first cam arranged to rotate about a first axis. At least one second cam is arranged to rotate about a second axis. The first and second cams engage so that rotation of the second cam in a first rotational sense urges rotation of the first cam so as to engage the blade with a fixed contact, thereby closing the isolation switch. The first cam, when under the influence of electromagnetic forces resulting from current flow through the isolation switch tending to open the isolation switch, urges rotation of the second cam in the first rotational sense.
    Type: Grant
    Filed: July 12, 1985
    Date of Patent: June 30, 1987
    Assignee: Square D Company
    Inventor: Dominick Tringali
  • Patent number: 4649244
    Abstract: The electric control to reset a circuit breaker is formed by a sub-assembly (10) to be coupled to the mechanism (60) of the circuit breaker. At the end of the charging travel of the closing spring a control cam (46) disconnects and stops the motor. The charging position is defined by a latch interlocking the charging cam (62), a closing operation being induced by the release of the latch and a limited rotation of this charging cam (62). The link shaft between the motor reducing sub-assembly or block (10) and the mechanism (60) transmits this closing limited rotation to the control cam (46), which induces the restarting and the connecting of the motor for a reset operation of the closing spring.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: March 10, 1987
    Assignee: Merlin Gerin
    Inventors: Pierre Baginski, Jean-Pierre Nebon
  • Patent number: 4612430
    Abstract: An anti-rebound latch having a generally U-shaped housing which defines a central blade path opening between first and second side legs. The housing supports a pivotally mounted generally crescent shaped drive-arm which includes a kicker portion at one end positioned adjacent the top of the blade path opening and a pusher portion at its opposite end. The drive-arm is operatively associated with a blade catcher carried by the first side leg which is reciprocally movable between a first position in which no part of the blade catcher extends into the opening and a second position in which the catcher extends across the opening to the second side leg. The catcher is spring biased to its first position.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: September 16, 1986
    Assignee: Square D Company
    Inventors: Dallas Sloan, Donald R. Venzke, Eugene Wehr
  • Patent number: 4594491
    Abstract: A molded case circuit breaker includes an elongated intermediate latch lever disposed between and in engagement with an intermediate latch plate and a trip bar. The intermediate latch lever is pivotable about a pivot axis and includes a first elongated portion between the latch plate and the pivot axis of a length substantially less than the length of a second elongated portion between the pivot axis and the trip bar. The intermediate latch lever so configured reduces the force required and the amount of travel of the trip bar required to effect a trip operation.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: June 10, 1986
    Assignee: Westinghouse Electric Corp.
    Inventors: David A. Leone, Douglas C. Marks