Patents by Inventor Thomas Edwin Holden

Thomas Edwin Holden 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).

  • Piston assembly
    Patent number: 8215281
    Abstract: A piston assembly includes a piston comprising a piston base and a piston head spaced-apart from the piston base and a crankshaft between the piston head and the piston base and connected to the piston base.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: July 10, 2012
    Inventor: Thomas Edwin Holden
  • Method of manufacturing a multicontact switch
    Patent number: 3967370
    Abstract: A multicontact switch for use in a keyboard is manufactured from a plurality of metallic strips and a printed circuit board. The strips are passed through rollers that form arched portions in the strips, and the arched portions are then aligned with contact areas on the printed circuit board. After this alignment the strips are spot welded to the printed circuit board while they are held in place by clamps. After one board has been welded to the strips it is moved from the welding station and another group of arched portions in the strips is aligned with another board. Following this alignment the strips are sheared between the two boards, thereby producing a completed multicontact switch structure.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: July 6, 1976
    Assignee: Hewlett-Packard Company
    Inventors: Harry Charles Griffin, Thomas Edwin Holden, Orland Edgar Upton