Patents by Inventor Foppe Douma

Foppe Douma 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).

  • Collimator exchanging system
    Patent number: 4758726
    Abstract: A collimator exchanging system for exchanging collimators between an active holding device (14) and a storage device (8) includes a cart (5) which is provided with a catching/locking device (26) for the collimator. The device (26) is constructed so that the collimator can be exchanged only in the correct orientation of the cart relative to the active device or the storage device. An unlocking pin (34) of the cart enables the exchange with the exchanging system otherwise being blocked.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: July 19, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Foppe Douma, Hendrik J. Meulenbrugge