Patents by Inventor Thomas J. Kluempers

Thomas J. Kluempers 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).

  • Door closer with switch actuated thereby
    Patent number: 3973357
    Abstract: A door closer has a case set in the floor and a rotatable spindle projected from the case. The spindle supports a door and rotates with the door as the door pivots between open and closed positions. Within the case the spindle is coupled with a rotatable element which is acted upon by a return spring to bring the door to its closed position. The rotatable element carries a magnet which is located opposite to a magnetic reed switch on the case when the door is in a selected position and thereby closes a circuit to indicate the position of the door.
    Type: Grant
    Filed: July 15, 1974
    Date of Patent: August 10, 1976
    Assignee: C. Hager & Sons Hinge Manufacturing Company
    Inventor: Thomas J. Kluempers