Patents by Inventor Dieter Koelling

Dieter Koelling 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: 4851802
    Abstract: A relay includes a coil member having an axial cavity within which is an elongated rigid armature interacting with at least one pole plate in contacting fashion. The armature is positioned in the coil member by a spring frame which is prestressed to the quiescent position. The spring frame has two cross legs approximately parallel to the armature plane and two long legs extending laterally of the armature and lying in planes perpendicular to the armature plane. A spring tongue extends from one of the cross legs and to between the long legs, the free end of the spring tongue being connected to the armature. The spring frame produces a stable holding for the armature in the coil member and provides operational adjustment from outside the relay.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: July 25, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventor: Dieter Koelling