Patents Represented by Attorney L. P. Johns

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  • Circuit interrupter with optical indicator
    Patent number: 4302650
    Abstract: A circuit interrupter with an optical indicator characterized by a housing, a stationary contact structure within the housing, a movable contact carrier structure within the housing and movable between open and closed positions relative to the stationary contact carrier, said carrier structure also being movable between remote and proximate positions of the lens, indicator means for observing the position of said carrier structure and including a lens in the housing and directed to said carrier structure, indicia on the surface of said carrier structure facing the lens and having two indicia portions, and the lens showing different indicia portions when the carrier structure is in remote and proximate positions, thereby indicating to an observer whether the circuit interrupter is in the open or closed circuit condition.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: November 24, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Kurt A. Grunert, John J. Henwood, Birch L. DeVault
  • Atomized dielectric fluid composition with high electrical strength
    Patent number: 4296003
    Abstract: A dielectric fluid composition with high electrical strength characterized by a first fluid selected from the group consisting of electronegative gases, such as SF.sub.6, CCl.sub.2 F.sub.2, C.sub.2 F.sub.6, CF.sub.3 Cl, and CF.sub.4, and mixtures thereof; or from another group consisting of electropositive gases, such as N.sub.2 and CO.sub.2, and mixtures thereof; or from mixtures of the two groups; and a second fluid from a group of atomized liquids, which may be chlorinated liquid, such as, C.sub.2 Cl.sub.4 (tetrachloroethylene); and fluorocarbon liquids, such as, C.sub.8 F.sub.16 O (perfluorodibutyl ether), and mixtures thereof.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: October 20, 1981
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ronald T. Harrold, Lawrence E. Ottenberg
  • Electric control system with rotary mechanical interlock and timing mechanism
    Patent number: 4295054
    Abstract: An electric control system with mechanical interlock characterized by means for switching between one or another supply line extending to a load which comprises two parallel paths extending to the load which path includes spaced controlled devices, and rotary mechanical interlock timing means between the several control devices for sequentially preventing closing of two or more control devices at the same time.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: October 13, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: George N. Kovatch, George S. Bettencourt, Otto H. Soles
  • Electric control system with mechanical interlock
    Patent number: 4295053
    Abstract: An electric control system with mechanical interlock characterized by means for switching between normal and emergency supply lines extending to a load which comprise two parallel paths extending to the load which paths include spaced controlled devices, and mechanical interlock means between the several control devices for preventing closing of two or more control devices at the same time.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: October 13, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: George N. Kovatch, James B. Wallace
  • Mechanical interlock for low voltage circuit breakers
    Patent number: 4286242
    Abstract: An electric control system characterized by a pair of spaced circuit breakers and a mechanical interlock therebetween, each circuit breaker having a pair of stationary and movable contacts and a trip bar for opening the contacts, and the interlock extending between the movable contact means of each movable contact of one circuit breaker and the trip bar of the other circuit breaker.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: August 25, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Stephen A. Mrenna, Alfred E. Maier, Glenn R. Thomas
  • Convertible switch operator
    Patent number: 4282414
    Abstract: A convertible switch operator for use as a pull momentary and as a push-pull momentary operation characterized by a tubular selector longitudinally movable in a housing and spring biased by a first spring for operation as a pull operator; and spring biased by two springs in an intermediate position as a push-pull operator.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: August 4, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Robert J. Johnston, Stephen G. Layciak, George M. Cametti
  • Drawout switchgear with blow-out prevention device
    Patent number: 4281227
    Abstract: A drawout switchgear with blow-out prevention means characterized by a circuit breaker movable into and out of a cell, and detachable blockage means for holding the circuit breaker in place.
    Type: Grant
    Filed: April 25, 1979
    Date of Patent: July 28, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: James O. Rexroad, John P. Majcher
  • Circuit breaker structure
    Patent number: 4278859
    Abstract: A circuit breaker structure having improved insulation means between the conductors which support the stationary and movable contacts to reduce or eliminate arc restriking conditions.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: July 14, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Russell T. Borona
  • Circuit breaker structure
    Patent number: 4277664
    Abstract: A circuit breaker structure comprising a multipole circuit breaker having separable contacts for each pole, which circuit breaker is contained within an insulating housing; incoming and outgoing terminals extending from one wall of the housing which incoming terminals are aligned and reinforced against movement due to short circuits by a brace extending between and around the terminals on one side and a cap on the other side of the terminals for clampingly holding the aligned terminals in place.
    Type: Grant
    Filed: August 24, 1979
    Date of Patent: July 7, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Alfred E. Maier, Louis N. Ricci
  • Circuit breaker operating mechanism
    Patent number: 4271341
    Abstract: A circuit interrupter characterized by a pair of separable contacts, operating means for opening and closing the contacts and comprising a piston for opening the contacts, the piston being operative at a range of 3,000 to 10,000 psi, generating means comprising a solid expulsive charge when ignited for moving the piston to the contact-open position, an igniter for the operating means, a primer for the igniter comprising a mixture of flammable material, means for producing an electric charge in the primer, and spring means for returning the piston to the contact-closed position.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: June 2, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Thomas N. Meyer
  • Thermal overload relay
    Patent number: 4270113
    Abstract: A thermal overload relay characterized by a housing containing a plurality of pole units, two pairs of spaced terminals on the housing, one terminal of each pair comprising a stationary contact within the housing, a movable contact mounted on and extending from the other of each terminal and being biased in one of the open and closed positions of the stationary contact, a slide within the housing for moving the movable contact between said positions, latch means on the slide for latching the slide in one of said positions and being spring biased in the other position, reset means for moving the slide to a latched position, each pole unit having a bimetal element responsive to current flow to effect heating thereof, and means associated with the latch means for unlatching the latch means.
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: May 26, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Paul T. Anderson
  • Circuit breaker interlocking mechanism
    Patent number: 4270031
    Abstract: A circuit breaker interlocking mechanism characterized by a pair of circuit breakers connected to different power supply sources in comprising a locking member pivotally mounted between the circuit breakers for preventing one circuit breaker from being actuated when the other is in a preselected operating position.
    Type: Grant
    Filed: March 28, 1979
    Date of Patent: May 26, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Russell T. Borona, Kenneth R. Coley
  • Circuit breaker structure with shock absorbers
    Patent number: 4267419
    Abstract: A multiphase circuit breaker structure characterized by stationary and movable contact means for each phase, a cross bar operatively connected to the movable contact means, a stop plate for stopping movement of the cross bar during opening of the contacts, and shock absorbing means on one of the stop plate and cross bar for absorbing energy released when the cross bar moves to the open position of the contacts.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: May 12, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Alfred E. Maier, Walter V. Bratkowski
  • Method of producing low loss pressed magnetic cores from microlaminations
    Patent number: 4265681
    Abstract: A method for making pressed magnetic components having a low core loss characterized by the steps of compacting a plurality of substantially rectangular particles of an oriented iron alloy having a silicon content of from about 2.5% to about 3.5% and a carbon content of up to 0.01% into a compact of predetermined configuration, and stress-relief annealing the compact in a non-oxidizing atmosphere so as to provide a magnetizable compact having low core loss.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: May 5, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Robert F. Krause, Norman M. Pavlik, Kurt A. Grunert
  • Circuit breaker with anti-bounce mechanism
    Patent number: 4263492
    Abstract: A circuit breaker with an anti-bounce mechanism characterized by separable contact means operable between open and closed positions and including a cross bar, an operating mechanism releasable to effect movement of the contacts and comprising a link connected to the cross bar, means for preventing bouncing of the cross bar when the contacts are open and comprising a stop member engageable with the length.
    Type: Grant
    Filed: September 21, 1979
    Date of Patent: April 21, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Alfred E. Maier, James R. Farley
  • Drawout switchgear with telescoping cam shaft
    Patent number: 4262175
    Abstract: Drawout switchgear characterized by a circuit interrupter unit movable into and out of a cell between disconnected and connected positions of separable terminals supported in the cell and on said unit, a levering-on mechanism for moving said unit between disconnected and connected positions of the terminals, the levering-in mechanism comprising a pair of cams on a cam shaft which shaft comprises telescoping shaft segments to facilitate assembly of the operating mechanism.
    Type: Grant
    Filed: April 25, 1979
    Date of Patent: April 14, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: James O. Rexroad, John P. Majcher
  • Shipping cover for motor control center
    Patent number: 4261467
    Abstract: A shipping cover for a motor control center characterized by a motor control center having a panel surface from which projects a handle and a handle knotting frame, and a shipping cover therefor characterized by spaced walls forming cavity means for enclosing the assembly of the handle and frame which walls engage the surfaces of the handle and frame to effect a friction fit between the cover and the assembly.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: April 14, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Sadiq A. Shariff, Brij M. Bharteey, Neal E. Rowe
  • Push-pull switch operator
    Patent number: 4255633
    Abstract: A push-pull switch operator characterized by separable contacts, a contact operating member, an actuating structure movable longitudinally to move said member, a guide adjacent the actuator for guiding the structure through longitudinal movement, the guide having a cam and the actuating structure having a cam follower, the cam follower being mounted on a spring biased slide for movement transversely of the longitudinal movement of the structure to effect push-pull momentary, push-pull maintained, and pull operation of the switch.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: March 10, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Robert J. Johnston, Stephen G. Layciak, George M. Cametti
  • Circuit interrupter
    Patent number: 4251701
    Abstract: A circuit interrupter characterized by a pair of separable contacts with operating means for opening and closing the contacts and comprising a cylinder and piston mechanism which cylinder has opening means at each end of the cylinder chamber. Rotatable means are provided at each end of the cylinder and have a plurality of spaced chambers which are sequentially alignable with the opening means. Means are also provided in each chamber for generating a sudden expulsion of gas against the piston and the rotatable means at each end of the cylinder being simultaneously rotatable. The circuit interrupter is also characterized by an adapter means for converting the gas from a high to low pressure status to operate the piston.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: February 17, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Thomas N. Meyer
  • Detachable switch structure
    Patent number: 4250368
    Abstract: A detachable switch structure comprising an actuator, a contact block mounted on the actuator, and an adapter for mounting the contact block on the actuator; the block comprising a dielectric housing and enclosing separable contacts; the block being mounted on the actuator; the actuator comprising detachable interfitting means cooperative with corresponding means on the contact block housing which interfitting means includes elongated hook members on the adapter engageable with projections on the housing, the hook members including windows engageable with the projections, and the hook members including openings for insertion of a tool between the hook members and the projections for disengaging the same.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: February 10, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Robert J. Johnston, Stephen G. Layciak, Stephen S. Dobrosielski