Patents by Inventor Yoshihiko Ishikawa

Yoshihiko Ishikawa 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).

  • Protective device for a hermetically sealed type compressor and a hermetically sealed compressor listing same
    Patent number: 6548924
    Abstract: A protective device (3) for a hermetic type electromotively driven compressor (1a) includes a protector assembly (30) having a housing (32) with an electric current fuse (34) which detects a predetermined over-current. The housing (32) comprises an electrically insulating skirt member (31) formed so as to block a conductive part on the side facing an external connection terminal. By forming the electrically insulating skirt member (31) of housing (32) for a hermetic type electromotively driven compressor, insulation distance between a conductive part such as the electric current fuse (34) and an external conductive part such as a metal wall part (21) is set to be 9.5 mm or more.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: April 15, 2003
    Assignees: Texas Instruments Incorporated, Hitachi, Ltd.
    Inventors: Hideharu Furukawa, Yoshihiko Ishikawa, Toshio Shimada, Wataru Sugawara
  • Protective device for a hermetically sealed type compressor and a hermetically sealed compressor using same
    Publication number: 20010048285
    Abstract: A protective device (3) for a hermetic type electromotively driven compressor (1a) includes a protector assembly (30) having a housing (32) with an electric current fuse (34) which detects a predetermined over-current. The housing (32) comprises an electrically insulating skirt member (31) formed so as to block a conductive part on the side facing an external connection terminal. By forming the electrically insulating skirt member (31) of housing (32) for a hermetic type electromotively driven compressor, insulation distance between a conductive part such as the electric current fuse (34) and an external conductive part such as a metal wall part (21) is set to be 9.5 mm or more.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 6, 2001
    Inventors: Hideharu Furukawa, Yoshihiko Ishikawa, Toshio Shimada, Wataru Sugawara
  • Switch for circuit breaker
    Patent number: 4876523
    Abstract: A switch is shown having a thermostatic member which deforms in response to variations in temperature to thereby control the state of energization of the switch. The thermostatic member is shown cantilever mounted or centrally mounted using material to affix the member to a support which melts at a selected temperature to cause the member to separate from the support upon the occurrence of selected conditions.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: October 24, 1989
    Assignee: Texas Instruments Incorporated
    Inventors: Osami Kushida, Hisamitsu Ninomiya, Masakazu Nezuka, Yoshihiko Ishikawa