Patents by Inventor Egbert Kuipers

Egbert Kuipers 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).

  • Polarized electro-magnetic relay
    Patent number: 3953814
    Abstract: The relay has an U-shaped and E-shaped yoke member with an interconnecting permanent magnet. An U-shaped armature rocks between the yoke members and is held by springs between them. The springs are attached with one end each to the E yoke member; in order to prevent sliding of the armature or yoke parts on changing position, the springs are constructed to permit resilient length compensation and are attached with the other end to the armature beyond a temporary fulcrum on the U yoke member.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: April 27, 1976
    Assignee: Hartmann & Braun Aktiengesellschaft
    Inventor: Egbert Kuipers