Patents by Inventor Fredrick R. Waldecker

Fredrick R. Waldecker 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).

  • Gas spring
    Patent number: 5452883
    Abstract: The present invention relates to gas cylinder springs and, more particularly, to gas cylinder springs which receive gas from a manifold into which the gas cylinders are threaded. The invention specifically relates to a way of automatically and in a nonmechanical manner expel atmospheric pressure from the gas spring. The piston rod of the gas spring is tapered slightly to provide a pocket into which atmospheric pressure can collect and be expelled around the gas spring seals on each stroke of the piston rod.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: September 26, 1995
    Assignee: Ni-Tech, Inc.
    Inventors: John Holson, Fredrick R. Waldecker