Patents by Inventor John H. Hackenberg

John H. Hackenberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5509704
    Abstract: A latch (10) for latching or locking a battery housing (80) to an electronic device (70) which automatically locks in place upon the removal of pressure to a biased cantilevered beam (52) (54). Latch (10) is removal from a first position, in which the battery housing (80) is latched to the electronic device to a second position in which the battery housing (80) is unlocked from the electronic device.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: April 23, 1996
    Assignee: Motorola, Inc.
    Inventors: Christian Schneider, John H. Hackenberg, Aaron P. Clark
  • Patent number: 5250371
    Abstract: A weldless battery pack (10) comprises a housing (14) having a flexible circuit (16) inserted within the housing. The flexible circuit has at least one spring contact (20) integrally formed on the flexible circuit. Inside the housing is a plurality of cells (12) interconnected by at least one of the spring contacts (20) formed on the flexible circuit.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: October 5, 1993
    Assignee: Motorola, Inc.
    Inventors: Raymond J. Kleinert, III, John H. Hackenberg, Russell E. Gyenes, Willard F. Amero, Jr.
  • Patent number: 5134312
    Abstract: A bipolar ECL latch or flip-flop circuit of the isolated differential feedback type provides a high level of alpha particle immunity, without unduly affecting the propagation delay, power dissipation or circuit area in an integrated circuit device. A pair of latch transistors having differential input are used, with common emitters coupled to a clocked current source. The latch outputs are coupled back to a pair of holding transistors by two emitter follower feedback transistors. The holding transistors have a common emitter connection to a current source clocked inversely to that of the current source for the latch transistors, so the state of the latch is held by the holding transistors. The amplification of the feedback transistors is reduced so that the speed with which the transistor can react to transient noise such as that produced by an alpha hit is reduced.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: July 28, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Frederick J. Jones, Jr., David L. McCall, John H. Hackenberg