Patents by Inventor William Wilfred Spencer

William Wilfred Spencer 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: 6619638
    Abstract: A supplementary spring assembly (104) is fitted to three consecutive turns (86.1, 86.2, 86.3) of a vehicle suspension coil spring (102). The spring assembly (104) includes a central torsion-producing portion (105) having a pair of half-turn torsion springs (106, 108). The half-turn torsion springs (106, 108) are connected to each other by a C-shaped bight portion (109) which engages an intermediate turn (86.1) of the coil spring (102) in a clamping fit. First and second arms (110, 112) extend from opposite ends of the torsion springs (106, 108) and pass slidably through complemental apertures (114) formed in mounting blocks (116). The mounting blocks (116) include a clamping arrangement in the form of a C-shaped recess formed in the block (116) which is sized to fit around non-adjacent turns (86.2, 86.3) of the coil spring (102).
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: September 16, 2003
    Inventor: William Wilfred Spencer
  • Patent number: 4006893
    Abstract: A device for strengthening a coil spring comprising a torsion spring having a helical formation and two arms that are engageable with the coil spring. A deformable plastics body, such as polyurethane, is received within the helical formation resistively to oppose a reduction of the diameter of the formation whereby the device has a progressive action.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: February 8, 1977
    Inventor: William Wilfred Spencer