Patents by Inventor Dale G. Johnson

Dale G. Johnson 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).

  • Shielded switch
    Patent number: 5513078
    Abstract: An EMI shielded keypad (10) or switch for a radiotelephone (50) has a non-conductive cover (12) attached to a printed circuit board (PCB) (14). The PCB (14) has a ground pad (20) and a plurality of metal traces (26) on a first surface (16) that attaches to the cover (12). The cover (12) is made of a flexible, preferably clear material, such as mylar and has a dimple (28) centered over the ground pad (20). A bubble (30) is centered over the plurality of conductive traces (26). A conductive coating (32) is selectively applied to the mating surface (34) of the cover (12), so that the conductive coating (32) in the bubble (30) is electrically isolated. By pressing on the bubble (30) electrically contact is established between the plurality of traces (26), thus the bubble and the traces (26) define a switch.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: April 30, 1996
    Assignee: Motorola, Inc.
    Inventors: Dean M. Komrska, Dale G. Johnson
  • Method for assembling a heat sink to a circuit element using a retentive spring force
    Patent number: 5122480
    Abstract: A heat sink/electromagnetic shield assembly for a circuit element disposed upon a circuit board. A spring clip containing at least one hooked projection forming the spring is positioned in a confronting relationship with the circuit element. A U-shaped housing is slidingly positioned over the circuit element and the spring clip to enclose the circuit element and to compress the hooked projection which forms the spring. Compression of the hooked projection causes the hooked projection to exert a spring force to retain the housing in position about the circuit element. The assembly may be constructed in-line during construction of the electrical circuit disposed upon the circuit board.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: June 16, 1992
    Assignee: Motorola, Inc.
    Inventors: Michael G. Galich, Dale G. Johnson
  • Heat sink assembly
    Patent number: 5031028
    Abstract: A heat sink/electromagnetic shield assembly for a circuit element disposed upon a circuit board. A spring clip containing at least one hooked projection forming the spring is positioned in a confronting relationship with the circuit element. A U-shaped housing is slidingly positioned over the circuit element and the spring clip to enclose the circuit element and to compress the hooked projection which forms the spring. Compression of the hooked projection causes the hooked projection to exert a spring force to retain the housing in position about the circuit element. The assembly may be constructed in-line during construction of the electrical circuit disposed upon the circuit board.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 9, 1991
    Assignee: Motorola, Inc.
    Inventors: Michael G. Galich, Dale G. Johnson
  • Charging base
    Patent number: D352497
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: November 15, 1994
    Assignee: Motorola, Inc.
    Inventors: Anthony Scianna, Sr., Dale G. Johnson
  • Portable telephone
    Patent number: D360632
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: July 25, 1995
    Assignee: Motorola
    Inventors: Albert L. Nagele, Ross Goodwin, Dale G. Johnson
  • Portable telephone
    Patent number: D369162
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: April 23, 1996
    Assignee: Motorola, Inc.
    Inventors: Albert L. Nagele, Ross Goodwin, Dale G. Johnson