Self-aligning Contacts Patents (Class 200/248)
  • Patent number: 11145471
    Abstract: In an arrangement and a method for driving a movable contact of a vacuum interrupter in a high-voltage circuit breaker, an actuating rod forms an element of a kinematic chain of the high-voltage circuit breaker. A lever element can rotate about an axis and can be mechanically connected to a drive via a connection element. A coupling element is configured to mechanically movably couple the actuating rod and the lever element. The actuating rod and the coupling element each have a longitudinal axis. The longitudinal axes are situated substantially on a common axis at a point in time when a separating action of the vacuum interrupter occurs.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: October 12, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alexander Hartung, Michael Bartz
  • Patent number: 11031203
    Abstract: A contact point device includes a first contactor, an oscillation supporting portion, and a second contactor. The first contactor has an outer side surface shaped in a column that surrounds a central axis. The oscillation supporting portion supports the first contactor to allow the central axis to oscillate. The second contactor is disposed opposite to the first contactor. One of the first contactor and the second contactor includes a plurality of first contact portions provided to surround the central axis on a plane perpendicular to the central axis, and the other includes a second contact portion provided to protrude toward a space surrounded by the plurality of the first contact portions. The second contact portion has a contact surface which is a curved surface exposed toward the space to surround the central axis.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: June 8, 2021
    Assignees: DENSO ELECTRONICS CORPORATION, TOYOTA JIDOSHA KABUSHIKIKAISHA
    Inventors: Masanao Sugisawa, Makoto Motono
  • Patent number: 10125877
    Abstract: A shuttle valve has a valve body including a first valve seat defining a first fluid inlet, a second valve seat defining a second fluid inlet, and a center portion that is connected to the valve seats, the center portion defining a fluid outlet and a bore. A moveable member is moveable within the bore between a first position against the first valve seat and a second position against the second valve seat to control the flow of fluid from either of the first or second inlet to the outlet. The moveable member may be configured to have a unitary construction formed of a single component, by which a unitary shell defines a substantially hollow interior. The moveable member has a hollow interior and a weep hole for equalizing pressure between the hollow interior and exterior of the moveable member.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: November 13, 2018
    Assignee: Parker-Hannifin Corporation
    Inventors: Aaron Michael Morgan, Kevin Lawrence Bresnahan, Tyler James Kooser, Bipin Goraksha Kashid
  • Publication number: 20150136572
    Abstract: A thin push button structure includes a main board, a circuit board, an elastic element, a supporting plate, a key top and a frame. The circuit board is disposed on the main board and formed with a plurality of cavities. The supporting plate includes a seat, an extending portion and a contacting portion. The seat is formed with a window at the central region and connected to the contacting portion by the extending portion. The elastic element is disposed on the circuit board. The key top includes a main body and a plurality of posts that extend therefrom. The frame includes a through opening and a plurality of alignment grooves at the periphery of the opening. The frame sleeves the key top, and the posts are received by the alignment grooves. The key top caps the contacting portion and is movable within the alignment grooves and the cavities.
    Type: Application
    Filed: December 6, 2013
    Publication date: May 21, 2015
    Applicant: Ichia Technologies, Inc.
    Inventors: CHANG -LI LIU, YU- CHIH CHANG
  • Patent number: 8907236
    Abstract: A floating contact assembly for use in a circuit breaker includes a contact, a floating member, a bearing element, a jaw member, and a flexible conductor. The floating member includes a joint surface and the contact is electrically connected to a surface of the floating member opposite the joint surface. The bearing element is configured to abut the joint surface of the floating member such that the floating member is configured to rotate about a first axis that passes through the bearing element. The jaw member is configured to electrically connect the floating contact assembly to an external electrical component and the flexible conductor electrically couples the jaw member to the floating member.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 9, 2014
    Assignee: Schneider Electric USA, Inc.
    Inventors: Chad R. Mittelstadt, Jeff Kaufman, Frank T. Ehrenberger
  • Patent number: 7777601
    Abstract: A movable contacting device in a circuit breaker comprises: a crossbar linked with the opening/closing mechanism and carried so as to pivot cooperatively with the opening/closing mechanism; a movable contact arm engaged, so as to cooperational with the crossbar, with a shaft fitted into a mutually opposing recesses in the crossbar; and a movable contact arm support fixed to the case accomodating the opening/closing mechanism and having mutually opposing through-holes through which the shaft is passed; and the movable contact being configured so that the movable contact slides between surfaces of movable contact arm support having the mutually opposing through-holes; and the construction of a single-pole portion of the movable contact arm is constituted by arranging in parallel two movable contact arm members each having a movable contact at one end, and in a shaft-supporting portion at the other end, an elastic member is sandwiched between the two movable contact arm members.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: August 17, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Kakisako, Hitoshi Ito, Kozo Maeta, Masanori Kawamura, Shigeki Koumoto
  • Patent number: 6325638
    Abstract: An electrical assembly and actuating mechanism for use therewith in which conductor pairs of two circuit members (e.g., printed circuit board and electronic module or semiconductor chip) are effectively electrically coupled. A rigid plate is fixedly positioned relative to a first of the circuit members (e.g., using upstanding pins), a pressure plate is movably oriented relative to the rigid member, and an actuator (e.g., screw) moves within the rigid member to cause the pressure plate to engage the second circuit. Such engagement in turn causes the conductors of the second circuit member to forcibly engage the first circuit member's conductors. Solder balls and dendritic members can also be used for providing enhanced coupling without harm to either structures. The resulting assembly affords a low profile when in final position, as highly desired in the design of microelectronic packaging structures which the present invention is particularly related to.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: December 4, 2001
    Assignee: International Business Machines Corporation
    Inventors: Fletcher Leroy Chapin, James Daniel Herard
  • Patent number: 6191375
    Abstract: An electrical switch (10) has a contact system in which first and second contact protrusions (22a, 22b; 22a′, 22b′; 22a″, 22b″) are offset from the center line of the long axis of a twistable movable contact arm. In a preferred embodiment the movable contact (22) is formed with a groove (22e, 22e′) formed through the contact running generally along the center line to form first and second generally wedge shaped contacts on either side of the center line. In one preferred embodiment, converging surfaces (22f, 22g) form a groove with an angle alpha of approximately 125° and approximately 158° in another preferred embodiment. In another preferred embodiment the protrusions (22a″, 22b″) are generally hemispherical.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: February 20, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Dario A. Cardona, Louis J. Leyes
  • Patent number: 6191374
    Abstract: The invention pertains to a contact lever for an electrical switch designed for automatic adjustment of the main contacts. During assembly the pivot shaft is inserted in an oblong opening in the contact lever. The switch position is changed from open to closed by rotating the contact lever on the pivot shaft. The pivot shaft includes two conically extending shoulders that correspond in shape to chamfers located at the edge of the oblong opening. The conical shoulders and chamfers comprise a portion of the bearing surface between the contact lever and the pivot shaft. A sliding bearing pair is formed during switch operation wherein the contact lever is limited to a centrally aligned position in the open position and allowed additional freedom of motion at the end of the closing operation. The additional freedom of motion allows for precise automatic contact alignment.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: February 20, 2001
    Assignee: General Electric Company
    Inventor: Claus-Peter Schulze
  • Patent number: 6180899
    Abstract: A double break switch construction for use in an electrical apparatus and suitable for both high power and low voltage-low current applications includes a base (10), first and second electrical contacts (36,38), mounted on the base (10) in spaced relation to one another, and an elongated, resilient, electrically conductive bar (48,100) having opposed ends (50,52). Two pairs of spaced electrical contacts (80,82); (90,92) are located on one side of the bar (48,100) with one pair of each of the ends (50,52) thereof. The bar (48,100) is aligned with the contacts (36,38) to bridge the same and the mounting post (54,60) engages the bar (48,100) generally centrally thereof and is movably mounted on the base (10) for moving the bar (48,100) toward and away from the contacts (36,38). A slot (94) is located in the bar (48,100) and extends in the direction of elongation thereof and between the contacts (90,92). The contact bar (48,100) is imperforate (84) between the contacts (80,82).
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: January 30, 2001
    Assignee: Siemens Energy & Automation, Inc.
    Inventor: Christian H. Passow
  • Patent number: 5030804
    Abstract: The invention relates to a contact arrangement, particularly intended for current-limiting low-voltage circuit breakers, with a double-break movable contact arm, the central part of which is attached to an insulating shaft which is rotatably journalled in elongated holes in stand parts on each side of the contact arm. In the closed position of the arrangement, the movable contact arm is pressed against two U-shaped fixed contact arms with the aid of two torsion springs. The contact arms have flat shape and are arranged with their broad sides facing each other. The shaft consists of two sleeve-formed holders surrounding the torsion springs. One holder exhibits a stop face for a latching member for arresting the movable contact arm in the open position.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: July 9, 1991
    Assignee: Asea Brown Boveri AB
    Inventor: Assadollah Abri
  • Patent number: 5008502
    Abstract: A power switching contactor for electrical loads having an improved contactor shaft which provides a bearing system for non-binding, efficient operation and easy replacement and also provides a self-alignment feature of the contactor arms with the stationary contact pads.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: April 16, 1991
    Inventor: Nawaz I. Kasam
  • Patent number: 4956528
    Abstract: An electrical contact switch for mounting on a printed circuit board, having a base provided with contacts, an illuminated cover movable with respect to the base and arched coil springs on the base arranged transversely to the direction of movement of the cover which resist downward movement of the cover. A shoe joined to the cover is guided for limited movement toward the base and is provided with contacts that engage the contacts on the base.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: September 11, 1990
    Assignee: ITT Composants et Instruments
    Inventors: Alain Janniere, Bernard Juret
  • Patent number: 4910485
    Abstract: A breaking device for a low voltage circuit breaker comprises in each pole a switching bar, a pair of stationary contacts connected to the connection terminals, a double-break rotary contact extending in a housing of the bar, and two arc chutes disposed on each side of the bar. Two contact pressure springs ensure elastic positioning of the rotary contact along the longitudinal direction of the pole. Pivoting of the rotary contact takes place around a fictitious axis mounted floating with respect to the fixed rotation axis of the bar.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: March 20, 1990
    Assignee: Merlin Gerin
    Inventors: Roger Bolongeat-Mobleu, Jean-Pierre Nereau
  • Patent number: 4746779
    Abstract: A contact arrangement for switchgear with multiple disconnects by contact points connected in parallel of two contact bridges aligned in a contact actuation link uses a spring collar for a contact pressure spring. The spring collar has cutouts transverse to the spring-action direction into which the contact bridges with the spring collars can be inserted and locked in place transverse to their longitudinal direction. The spring collar is rounded at two facing sliding surfaces in the contact actuation link aligned transverse to the longitudinal direction of the contact bridges. This assures optimal fitting of the contact bridges to the fixed contact components without jamming the spring collar in the alignment.
    Type: Grant
    Filed: October 29, 1986
    Date of Patent: May 24, 1988
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johann Drexler, Erwin Flierl
  • Patent number: 4691086
    Abstract: The switch comprises a hollow, generally rectangular casing, a generally rectangular pushbutton slidable rearwardly in such casing, and a terminal supporting block closing the rear end of such casing. All of such components are made of moldable resinous plastic materials. The block carries forwardly projecting contact points which connect with external electrical terminals. The pushbutton carries a cup-shaped contactor, slidably and rotatably mounted on a retaining pin which is pressed into a hollow post projecting rearwardly from the pushbutton. A compression coil spring is mounted around the pin and the post, between the contactor and the pushbutton. The contactor is fitted with an axial eyelet on which the contactor is freely rotatable. The contactor is movable into wiping engagement with the contact points, when the pushbutton is pushed rearwardly against the biasing force of a coil spring, compressed between the pushbutton and the terminal supporting block.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: September 1, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: John W. Habecker, Charles E. Black, III
  • Patent number: 4689451
    Abstract: 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.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: August 25, 1987
    Assignee: McGill Manufacturing Company, Inc.
    Inventor: John Resh
  • Patent number: 4677265
    Abstract: The gas-blast circuit breaker preferably provided for switching medium voltage has a housing (1) filled with insulating gas. In this housing (1), two contact members (7, 8) are arranged which can be moved relative to each other along an axis (6), and a fixed (8) one of which is formed of two half-shells (11, 12) spaced apart from each other along a plane of separation (16). A power terminal (5), arranged transversely to the axis (6), is electrically conductively connected to the fixed contact member (8). This circuit breaker is to be simplified while retaining a reliable current transfer from the power terminal (5) to the fixed contact member (8).
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: June 30, 1987
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Imre Horvath
  • Patent number: 4668848
    Abstract: An alignment and centering arrangement is provided for effecting the self-centering of a first contact assembly and for effecting the self-alignment of the first contact assembly with a second contact assembly as the contact assemblies are positioned together for engagement. The alignment and centering arrangement provides a predetermined maximum range of pivoting movement of the first contact assembly with respect to a predetermined position while requiring minimal forces for effecting the self-alignment. Additionally, the alignment and centering arrangement accurately establishes a predetermined center position with orientation of the first contact assembly along a predetermined axis. In one configuration, the alignment and centering arrangement includes the resilient mounting of the first contact assembly with respect to a reference plane.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: May 26, 1987
    Assignee: S&C Electric Company
    Inventors: Henry W. Kowalyshen, John C. Opfer, Norman J. Stranczek
  • Patent number: 4649247
    Abstract: A contact assembly is provided for current-limiting low-voltage circuit breakers. The contact assembly has a two-armed contact lever swivel-mounted on a central bearing pin whose lever arms are equipped at their ends with contact pieces. The contact lever is equipped with a slot for mounting on the bearing pin whose longitudinal axis extends approximately at a right angle to the longitudinal axis of contact lever. The contact lever has a stop extending at approximately a right angle to its longitudinal axis for a catch swivel-mounted on the bearing pin. The contact forces on both lever arms cannot be influenced by the swivel mount or by the drive mechanism of the contact lever, but are determined exclusively by the biasing springs.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: March 10, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernhard Preuss, Karl-Heinz Manthe
  • Patent number: 4594490
    Abstract: Switch assembly for use with equipment mounting apparatus backplane terminal pins. The assembly comprises an insulating housing member that is placed over a pair of adjacent terminal pins and secured to the backplane. An electrical shorting spring member positioned within the housing member engages both terminal pins to electrically short one terminal pin to another. An actuating member normally in engagement with the electrical shorting member is rotated by a connector inserted onto the backplane terminal pins to disengage the electrical shorting spring member from the pair of terminal pins.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: June 10, 1986
    Assignee: AT&T Bell Laboratories
    Inventor: Harold E. McCullough
  • Patent number: 4506123
    Abstract: An electrical contact device for transmitting heavy currents between relatively rotatable parts, for example between a fixed welding transformer and a rotatable unit which supports a spot welding gun. The contact device comprises a spaced-apart pair of annular, axially fixed, contact segments on one unit and, between these, an axially displaceable pair of annular contact disks on another unit. The disks are urged towards each other by springs and are thereby centered by a centering device to provide a well-defined clearance between each contact disk and the confronting contact segment, and the disks are pressed outwardly against the co-acting contact segments, to eliminate said clearances when current is to flow therebetween, by an annular operating device. The contact device has particular utility in robotics and prevents wear at the contacting surfaces on the appearance of relative rotation therebetween.
    Type: Grant
    Filed: January 12, 1983
    Date of Patent: March 19, 1985
    Assignee: ASEA Aktiebolag
    Inventors: Herbert Kaufmann, Jan Larsson
  • Patent number: 4315122
    Abstract: The present invention concerns a contact arrangement with a first contact and a second contact. The second contact has two contact members between which the first contact is received. A contact support resiliently supports one of the first and second contacts so that the supported contact is resiliently mounted relative to the contact support means and movable relative to the other contact.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: February 9, 1982
    Assignee: BBC Brown, Boveri & Company, Ltd.
    Inventors: Wilhelm Kramer, Joachim Grafling
  • Patent number: 4277662
    Abstract: A panel mounted switch consisting of two complementary side sections housing the switch components that include a plunger-type actuator carrying two movable switch blades and a series of fixed terminals. The switch blades being yieldably connected to the actuator whereby they are free to rock about their longitudinal axis upon engagement with certain of said fixed terminals, thereby achieving a self-cleaning, wiping switching contact.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: July 7, 1981
    Assignee: Cherry Electrical Products Corp.
    Inventor: Raymond Lewandowski