Elastic, Resilient Or Spring Biasing Valve Means Patents (Class 429/54)
Elastic band or o-ring valve member (Class 429/55)
  • Electrical component seal
    Patent number: 4004199
    Abstract: A three membered capacitor sealing structure is disclosed including a lower vinyl thermoplastic layer, a layer of natural or synthetic rubber, and an upper layer for rigidity. The layers may contain vents, openings, and/or piercings.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: January 18, 1977
    Assignee: P. R. Mallory & Co. Inc.
    Inventors: Godfrey Roy Pearce, Kenneth Drew Beard, Donald Lloyd Shively
  • Resealable vent for plastic battery case
    Patent number: 3980500
    Abstract: A resealable vent for a secondary cell having a flat plastic case including a resilient ball seated in an apertured passage with a predetermined amount of compression and adapted to unblock an opening in the passage and vent gaseous material upon an excessive build-up of internal pressure within the cell case, for example, during recharging at an accelerated rate.
    Type: Grant
    Filed: May 30, 1975
    Date of Patent: September 14, 1976
    Assignee: Gould Inc.
    Inventors: Dennis Dean Sorenson, Richard Allan Erickson