Patents Examined by M. Ginsburg
  • Patent number: 4803313
    Abstract: The invention is directed to an electric switch having a shaft (33) with a switching coulisse (36) comprising two circular segments, with control cams (60, 64) being disposed on the one circular segment and ratchet elements (66) being disposed on the other circular segment, which cooperate with a detent spring (75) and a contact spring (70). Because the circular segments are arranged i1 a common plane, a highly compact switch is obtained.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: February 7, 1989
    Assignee: Braun Aktiengesellschaft
    Inventor: Wilfried Rolf
  • Patent number: 4056759
    Abstract: A driving system for moving paths or escalators which use an endles chain adapted to be circulated between a path for transporting passengers, comprising a first and a second sprocket disposed at one end portion and substantially middle portion of the path, respectively, a first and a second induction motor coupled respectively to the first and second sprockets and each having the same rating output the sum of which is selected to be substantially equal to a maximum capacity of the system, an induction coupling interposed between the second sprocket and the second induction motor, means for detecting a current flow through the first induction motor, means for setting a reference value, and a thyristor amplifier for exciting the induction coupling in response to an excess developed when an output of the detecting means exceeds the reference value.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: November 1, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Nobuo Mitsui, Akinori Watanabe, Takeshi Oohira, Kazuhiko Kawauchi, Shoichi Nakao, Katsuya Teranishi
  • Patent number: 3988594
    Abstract: An electric fence controller for controlling the charge on an electrified fence. A charging circuit is provided which includes a ferro-resonant input transformer. The transformer is provided with primary and secondary windings wound on separate legs of a saturable core. A capacitor is connected across the secondary winding and forms a resonant circuit with the secondary winding. An energy storing capacitive circuit is connected to the charging circuit. A voltage multiplying output circuit is connected to the capacitive circuit through a switching circuit. This arrangement enables the input to the transformer to be electrically isolated from the output circuit.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: October 26, 1976
    Inventors: Kevin William Low, Robert Browne Wilkinson
  • Patent number: 3983347
    Abstract: On vehicles such as snowmobiles or other devices utilizing a internal combustion engine, it is usual to provide a throttle lever which is squeezed to open the throttle and released to close the throttle. Various forms of engine kill mechanisms are provided to stop the engine when the throttle pressure is released. These are usually provided with a mechanism for cutting out the kill switch for starting purposes and these are easily by-passed. The present device includes a relatively simple construction having a lever which can be positioned in many locations so that it is actuated by squeezing the throttle lever. An override is provided for starting purposes which is automatically released when the throttle is squeezed and cannot be by-passed.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: September 28, 1976
    Inventor: Timothy Brenzen
  • Patent number: 3979601
    Abstract: A combination switch for use in a standard wall receptacle for controlling the range of power supplied to the receptacle and also for turning on and off the power to the receptacle in accordance with a predetermined time sequence.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: September 7, 1976
    Inventor: Robert C. Franklin
  • Patent number: 3979571
    Abstract: A switching mechanism has at least two terminals partly positioned within a housing and a reciprocal actuator movable within the housing. A coil spring, under endwise buckling pressure, is mounted between spaced portions of one of the terminals, with movement of the actuator causing the coil spring to pivotally move toward and away from another terminal. A slider is positioned in one end of the coil spring and arranged for contact with the actuator to cause pivotal movement of the coil spring. The actuator and slider have cooperating means for latching the actuator in an operated position.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: September 7, 1976
    Assignee: Oak Industries Inc.
    Inventor: Peter J. Van Benschoten
  • Patent number: 3975646
    Abstract: Two cascaded induction machines provide asynchronous power transmission between two independent generating networks. The shafts of the two induction machines are mechanically connected for concurrent rotation and the rotor windings of the two machines are electrically connected in a reverse phase sequence. The cascaded induction machines are geared to a relatively low power variable speed drive which accurately controls the position and rotation of the shafts. A control system supplies low frequency excitation current for the variable speed drive and is capable of continuous operation through zero frequency to reverse the direction of rotation. The control system determines the level of power flow within the induction machines and is unresponsive to the difference in frequency of generation of the two generating networks so that the power flow is controlled even under transient load conditions.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: August 17, 1976
    Assignee: Westinghouse Electric Corporation
    Inventors: Lee A. Kilgore, Gurney L. Godwin, Eugene C. Whitney
  • Patent number: 3974348
    Abstract: A switch is disclosed which comprises a rockable switch actuating element having contacts and a fixed switch terminal means. The rockable element is moved by operation of a lock of which the rotor has an eccentric extension disposed within and cooperating with an opening in said rockable actuating member so that upon insertion of the key into the rotor and turning of that rotor, the actuating element is moved to effect switching.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: August 10, 1976
    Assignee: Societe d'Exploitation des Brevets Neiman SA
    Inventor: Paul Lipschutz
  • Patent number: 3973135
    Abstract: Two timing means are connected by a switching means, one of the timing means being operable to de-energize a load, the other energizing another load for a predetermined time after the first load has been de-energized.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: August 3, 1976
    Assignee: P. R. Mallory & Co., Inc.
    Inventor: Charles E. Scott
  • Patent number: 3973099
    Abstract: A push button switch for setting the time display of electronic timepieces utilizes a conductive elastomeric material such as silver filled silicone rubber as a conductive spring in its moving contact. The elastomer biased contact may be seated in a port in the watch frame and bonded thereto to make the frame waterproof. Momentary electrical contact is secured by pressing the moving contact against a metal contact portion of the printed circuit time keeping substrate within the watch frame. The watch frame is electrically connected to ground in the electronic watch circuit.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: August 3, 1976
    Assignee: American Micro-Systems, Inc.
    Inventor: James Baker Morris, Sr.
  • Patent number: 3971906
    Abstract: A trigger-lock control for a motor switch of a power tool is presented including a trigger attached to a rigidly connected elongated slide portion which reciprocates in a housing containing switch components arranged longitudinally in a "power-on" and "power-off" arrangement so that the slide portion can selectively operate these contacts when it is reciprocated by motion of the trigger. A spring urges the trigger and slide portion normally to a power-off position and locking means is provided to lock the elongated slide portion in the power-off position by providing an oscillating lever having a downwardly extending point at its free end which enters into an upwardly opening recess in the upper wall of the slide portion when the parts are in the power-off position. The lever is pivoted on a horizontal pivot on the top of the housing and joined to the lever is either a thumb piece or a lever adapted to be easily operated by a hand of the operator holding the tool.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: July 27, 1976
    Assignee: Lucerne Products, Inc.
    Inventor: Edward V. Sahrbacker
  • Patent number: 3970863
    Abstract: A styrene-butadiene-styrene block copolymer containing 50 to 70% by weight of butadiene can be used as a base material of an element capable of detecting leakage of petroleum products by detecting to the change in an electrical signal. By use of this detecting element any leakage of petroleum products from a transportation pipe line may be detected and located quickly and precisely.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: July 20, 1976
    Assignees: Sumitomo Chemical Company, Limited, Japanese National Railways
    Inventors: Hiroshi Kishikawa, Takayoshi Adachi, Tamio Usami
  • Patent number: 3970861
    Abstract: A peak load control and power-distributing system for residential or small commercial/industrial use in which some loads are uncontrolled and others are controlled. Current transformers in the main feeder for all loads supply current to a thermal switch to detect when the power demand exceeds a predetermined value. The thermal switch starts a small synchronous motor having gears driving a shaft with cams operating microswitches for the controlled loads. One cam switch enables the motor to operate through a preprogrammed cycle, and to turn off at the end of a cycle whenever the thermal switch indicates the power demand has dropped below the predetermined value.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: July 20, 1976
    Assignee: Sangamo Electric Company
    Inventor: Samuel C. McCollum
  • Patent number: 3969597
    Abstract: A lockable electric grounding switch comprises a two-piece switch housing which has an upper conductive portion into which a hollow cylindrical insulating portion is inserted, with the two portions secured together. The upper conductive portion has a slot in it for accommodating a key, and cam surfaces are provided on the underside of the end of the conductive housing to cause the key to be cammed downwardly when it is rotated to push a resiliently biased metal contact out of engagement with a shoulder of the metal portion of the housing. This opens the circuit between a terminal mounted in the other end of the insulating portion of the housing. The contact and the terminal are normally electrically interconnected by a compression spring which biases the contact into engagement with the metal housing when the key is removed or is rotated to an "off" position.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: July 13, 1976
    Assignee: McGill Manufacturing Company, Inc.
    Inventor: Thomas F. Osika
  • Patent number: 3969609
    Abstract: An illuminated push button switch assembly has a self-contained light source and a switch portion having integral conductive terminals eminating therefrom. A removable nonconductive saddle is provided for mounting a pair of auxiliary conductive terminals on the switch assembly and connectors are provided for electrically coupling the light source to the auxiliary terminals when said saddle is in place or for coupling the light source to the switch terminals when said saddle is removed. The removable saddle enables switches to be uniformly constructed while having the flexibility of having the light source function either independently of or in conjunction with the activation of the switch.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: July 13, 1976
    Assignee: Globe-Union Inc.
    Inventors: Vernon Walter Wanner, William Karl Lueschen
  • Patent number: 3967171
    Abstract: Propulsion control system for electrically powered vehicles, typically heavy duty off-road type work vehicles having electric motor driven wheels. In embodiment shown, power is supplied from direct current generator driven by internal combustion engine. Motor and generator field excitation is automatically varied responsive to selected machine operating conditions and improved means are provided to accomplish such variation. The provision and application of certain propulsion system parameters effects improved machine performance with minimum demand for operator skill and attention.
    Type: Grant
    Filed: May 1, 1974
    Date of Patent: June 29, 1976
    Assignee: R. G. LeTourneau, Inc.
    Inventors: Aaron D. Friend, Hilmer C. Lindahl
  • Patent number: 3967134
    Abstract: An electrical control unit for interconnection between a source of electrical energy and an electrically driven unit including a slide surface composed in part of electrically nonconductive material, a plurality of conductive discrete contact elements arranged in the slide surface, a conductive liquid contact adapted to progressively engage certain of the conductive discrete contact elements in the slide surface to provide a variable magnitude electrical output, and/or one or more conductive liquid contacts adapted to engage other of the discrete contact elements in the slide surface to effect a switching operation with respect to the variable magnitude electrical output or other electrical signal.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: June 29, 1976
    Assignee: Flo-Start, Inc.
    Inventor: James Whitman Gibbs
  • Patent number: 3965366
    Abstract: An electrical device control system comprising: a plurality of signal sources; a plurality of electrical loads; a central operation apparatus; a plurality of terminal operation apparatus connected to the plurality of electrical loads and having means to detect the operation and a fault of the signal source and a fault of the electrical load and to generate a time division signal thereof; a multiple signal transmission line connecting the plurality of terminal operation apparatus to the central operation apparatus to transmit the time division signal to the central operation apparatus; the central operating apparatus having means to generate an activating signal for transmission over the multiple signal transmission line to the terminal station apparatus to operate an electrical load in response to the detection of the time division signal.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: June 22, 1976
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Toyo Kogyo Co., Ltd.
    Inventors: Shizuo Sumida, Kazuo Nii, Osamu Shimizu, Atsushi Ueda, Mitsuaki Ishii
  • Patent number: 3965319
    Abstract: A manually actuated momentary switch completes an electrical circuit for lighting a low voltage indicator light advantageously used for testing circuit continuity. The switch and indicator light are in combination within a miniature size housing having depending electrical terminals for pluggable connection on a printed circuit board.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: June 22, 1976
    Assignee: AMP Incorporated
    Inventor: Joseph Larue Lockard
  • Patent number: 3961145
    Abstract: An extremely small time-setting switch adapted for mounting in a hole in the case of an electronic watch and having a coin slot whereby it may be rotated to any one of a plurality of operating positions including a "run" position, a "stop" position, a "minutes change" position, and an "hours change" position. The switch is provided with a generally annular detent structure affording clearance at its middle for the movable contact and affording a better feel including an audible click when rotated into each of its several operating positions and the stationary parts of the switch are locked to one another to prevent movement when the rotary knob is turned in a structure affording an extremely thin, flat package adapted to be staked into the watch case.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: June 1, 1976
    Assignee: Cutler-Hammer, Inc.
    Inventor: Werner B. Halbeck