Patents Represented by Attorney Robert J. Black

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  • Copper doping of eutectic solder
    Patent number: 4938924
    Abstract: Eutectic solder, including a combination of tin, lead and silver is doped by the addition of copper to substantially improve its effectiveness in soldering printed wiring cards which have been screen printed with conductors and mounting pads for components, with a low temperature, thick film cermet copper conductor. The addition of the copper substantially improves wetting and increases long term solder joint reliability.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: July 3, 1990
    Assignee: AG Communication Systems Corporation
    Inventor: Thomas Ozaki
  • Paystation theft inhibiting circuit
    Patent number: 4922525
    Abstract: A telephone paystation theft inhibiting circuit for detecting the grounding of the handset circuit conductors. Protection is provided for the receiver circuit conductor by means of an isolation transformer and solid state switching devices are employed to disconnect the transmitter from its associated circuit conductors when the grounding condition occurs.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: May 1, 1990
    Assignee: Palco Telecom Inc.
    Inventor: John J. Dernovsek
  • Image alignment indicators
    Patent number: 4914829
    Abstract: The addition of registration marks as an aid in projecting a precision location of a screened artwork or master pattern as used in printing of thick film circuits on a ceramic substrate base is taught by the present invention. The marks are located in a number of locations on the artwork that correspond to a location which will be determined as the edge of the substrate base when the substrate base is printed in proper registration on the artwork to which the registration marks have been added.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: April 10, 1990
    Assignee: AG Communication Systems Corporation
    Inventor: William R. Keaton
  • Low voltage operated coin relay
    Patent number: 4903294
    Abstract: A coin relay adapted for use with an associated coin hopper mechanism particularly adapted for use in a microcomputer based deregulated paystation. The relay requires only minimum voltages to operate with the associated coin relay operate and release timing controlled by an assoicated microcomputer.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 20, 1990
    Assignee: Palco Telecom Inc.
    Inventors: Gary Grantland, Attle D. Johnson
  • Paystation monitor circuit to prevent fraudulent use
    Patent number: 4896348
    Abstract: A paystation circuit that monitors coin battery signals, hookswitch detect signals and initial rate conditions to provide proper reset signals to the totalizer circuit enabling and/or disabling the dial keypad in order to prevent fraudulent paystation usage.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: January 23, 1990
    Assignee: Palco Telecom Inc.
    Inventors: Gary Grantland, Attle D. Johnson
  • Pin grid array removal tool
    Patent number: 4894910
    Abstract: A tool adapted to facilitate the removal of elements such as pin grid arrays, pin grid array sockets, chip carriers, and chip carrier sockets which have been soldered into plated through holes or similar elements of printed wiring cards. A platform is provided mounting two pivotable arms which are used to grip onto the element to be removed while a number of spring loaded posts are compressed to provide connection to the printed wiring card on which the element to be removed is attached. The entire assembly is then placed in a high temperature environment causing the solder to melt at which time the compressed springs, associated with the posts, effectively expand withdrawing the element from the printed wiring card.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: January 23, 1990
    Assignee: GTE Communicaton Systems, Inc.
    Inventors: William A. Reimer, David L. Vonder
  • Chip resistor
    Patent number: 4894258
    Abstract: Thick film resistors are fabricated for use in hybrid microcircuits by a sequence of steps beginning with the formation of a dielectric substrate on a carrier substrate. The dielectric layer is then baked to provide an appropriate rigidity after which a resistance element is deposited thereon as well as conductive terminals, the subsequent firing of both materials followed by heating of the entire assembly to a point where the adhesive characteristics of the dielectric layer are substantially reduced and the resultant film resistors become separated from the carrier substrate.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: January 16, 1990
    Assignee: AG Communication Systems Corporation
    Inventor: Thomas D. Belanger, Jr.
  • Apparatus for guiding, holding or moving longitudinal elements
    Patent number: 4869412
    Abstract: Apparatus for advancing, belaying, or retracting a longitudinal element, such as a cable, by means of engagement with an endless belt driven by a reversible motor in a predetermined endless path geometrically formed to guide and constrain the belt in the path by means of camming action along and around a support element. The cable is free to enter the apparatus engaging the belt at either end of the support element, to be advanced, belayed, or retracted by the belt along this predetermined path.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: September 26, 1989
    Inventor: Bernard F. Bishop
  • Method of and apparatus for reducing energy consumption
    Patent number: 4870340
    Abstract: The proposed invention is an energy saving load control device primarily intended for inductive loads (i.e., fluorescent lighting, motors, etc.) operating from an alternating current (AC) source. The proposed device switches the load voltage off at arbitrary positions in the sine wave and simultaneously provides a commutating path for any inductive current. By switching the load voltage on and off and providing a commutating current path reduced energy consumption is realized.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: September 26, 1989
    Assignee: Davis Controls Corporation
    Inventor: Kevin D. Kral
  • Tool for inserting dual in-line packaged circuits into printed circuit board sockets
    Patent number: 4868975
    Abstract: A tool adapted to assist in the placement of dual in-line packaged circuits (DIPs) into printed circuit board sockets. The tool includes a channel-shaped body having parallel sides of a springlike material each side having a gripper jaw attached to the lower edge thereof to grasp and support a dual in-line packaged circuit. A manually operated piston operates to force a DIP circuit which is properly oriented to the socket, into the appropriate location with the leads from the circuit placed in proper engagement with a printed circuit board socket. Operation of the piston also in addition to properly placing the circuit, also automatically disengages the tool from the circuit after placement has been effected.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: September 26, 1989
    Assignee: AG Communication Systems Corporation
    Inventors: Norman S. Zaremba, John P. Beyer, Thomas R. Glenn
  • Emulation circuit for interfacing joystick to ROM cartridge slot of computer
    Patent number: 4868780
    Abstract: A circuit providing a joystick interface to a computer. The circuit plugs into the cartridge slot of the computer and receives power from the computer. The circuit includes an analog interface circuit, a read only memory (ROM) containing both a machine language program to drive the analog interface circuit, and a machine language application program. The analog interface circuit includes an analog-to-digital converter, a clock circuit, and a decoder. The circuit of the present invention also includes a tri-state bus interface circuit to communicate the state of input switches to the computer.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: September 19, 1989
    Assignee: Ambrosia Microcomputer Products, Inc.
    Inventor: David R. Stern
  • Inspection fixture for the solder side of printed circuit boards
    Patent number: 4866578
    Abstract: A printed circuit board inspection fixture adapted to support a printed circuit board and including a light source and a mirrored reflective surface positioned to reflect light from the source onto the bottom side of said printed circuit board in order to facilitate inspection of the lower portion so as to detect improper lead insertion of components positioned on the circuit board.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: September 12, 1989
    Assignee: AG Communication Systems Corporation
    Inventors: Thomas R. Glenn, Norman S. Zaremba
  • Rotating contact ZIF connector
    Patent number: 4863388
    Abstract: A two-piece rotating contact zero insertion force connector is used to interconnect printed circuit boards (daughter boards) to backplanes (mother boards), cables to panels or cables to cables. This is accomplished by rotating one-half of the mating contacts relative to the other half to complete the necessary electrical connection. A number of different rotating contact designs are included which could be utilized to implement the overall concept.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: September 5, 1989
    Assignee: AG Communication Systems Corporation
    Inventors: William A. Reimer, David L. Vonder
  • Container with seal and cap
    Patent number: 4863047
    Abstract: A bottle for containment of motor oil or similar viscous material which includes contained therein a seal which prevents flow of the oil until the bottle is properly positioned over the oil receiving port at which time a device attached to the seal is operated to remove or puncture the seal in such a way as to permit the oil or similar material to flow from the bottle while avoiding the spillage usually associated with such containers.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: September 5, 1989
    Inventor: Chet H. Crow
  • Lock protector assembly
    Patent number: 4852373
    Abstract: A lock protector assembly consisting of a cast protector element, a back up plate and a clamping plate all adapted to fit in the interior of a telephone paystation to substantially improve the resistance of the upper housing of a telephone paystation, with respect to illegal strong arm attack and entry possibilities.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: August 1, 1989
    Assignee: Palco Telecom Inc.
    Inventor: Gerald B. McGough
  • Y type planetary gearing
    Patent number: 4850247
    Abstract: A Y type planetary gearing consists basically of three central gears, a sun gear and two ring gears, and a number of identical planet gears. The three central gears have a common central axis and a number of teeth different from each other. Each planet gear has a uniform tooth profile in the longitudinal direction. The Y type planetary gearing of this invention has three important characteristics: (1) each planet gear is able to mesh simultaneously with the three central gears, (2) each pair of gears satisfy the law of conjugate gear-tooth action to provide uniform rotary motion, and (3) the planet gears are able to work properly without a carrier. Consequently, the disclosed Y type planetary gearing is compact in structure, small in size, low in cost, and capable of providing a high speed ratio.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: July 25, 1989
    Inventor: David Yu
  • Compliant pad for use in tape automated bonding process
    Patent number: 4848639
    Abstract: A compliant pad or work piece for use in bonding the inner leads of integrated circuit devices as a part of a tape automated bonding process. The work piece is constructed of a metallic base layer to which is affixed a compliant pad, a cap support and a cap positioned on said compliant pad surrounding a gas channel which is connected to a source of gas such as nitrogen. A ceramic heat distribution layer is positioned over said gas channel and acts to support the integrated circuit device to be bonded to an associated tape during the tape automated bonding process.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: July 18, 1989
    Assignee: AG Communication Systems Corporation
    Inventor: Thomas D. Belanger, Jr.
  • Paystation transmitter ground detect circuitry
    Patent number: 4821313
    Abstract: A ground detect circuit for use in telephone paystation consisting of a comparator circuit which compares the voltage across a telephone transmitter included in the paystation to prevent users from fraudulent use of the instrument by grounding the handset transmitter to signal the central office that initial rate deposit has been made when in fact it has not. The ground detect circuit upon detecting the presence of ground at the transmitter generates a signal which can be utilized to disable an associated calling device.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: April 11, 1989
    Assignee: Palco Telecom Inc.
    Inventor: Gary Grantland
  • Apparatus for assisting in bowel evacuation
    Patent number: 4809370
    Abstract: Apparatus for assisting in the evacuation of the waste matter (feces) present in the rectum and sigmoid colon consisting of a framelike structure supporting a container of warm water so positioned that the anus of the user is submersed in the water. Adapted for use on a flush toilet, connections are included to a source of warm water. Also included as a part of the water container are means for emptying the container into the associated toilet while the apparatus is in use.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: March 7, 1989
    Inventor: Chung W. Juan
  • Circuit connector for use with printed wiring board
    Patent number: 4795362
    Abstract: A mounting arrangement for printed circuit boards where electrical and mechanical connection is maintained by the characteristics of the contacts included in the connector. While support is provided for the printed wiring board, no retenion means other than the contacts themselves are employed. The combination of a rigid and a flexible contact inhibits "walking" of the board due to vibration.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: January 3, 1989
    Assignee: GTE Communication Systems, Inc.
    Inventors: David L. Vonder, William A. Reimer