Patents by Inventor Casper Janse

Casper Janse 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).

  • Damper assembly for closing a duct for hot gases
    Patent number: 4022246
    Abstract: A damper assembly for closing a duct carrying hot gases. The assembly comprises a damper frame mountable in the duct, a plurality of damper blades supported by parallel blade shafts rotatably mounted in the frame, the shafts having shaft ends projecting from the frame at least one side thereof, blade operating arms secured to the projecting blade shaft ends, and linkage means operatively coupling the blade arms to each other and to an actuating device for opening and closing the damper.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: May 10, 1977
    Assignee: Forney International, Inc.
    Inventor: Casper Janse