Patents by Inventor Marcelles B. M. Douwes

Marcelles B. M. Douwes 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).

  • System for recording/reading information on/from a disc, comprising a disc cassette and an apparatus
    Patent number: 4849958
    Abstract: Cassette includes a disc (1) accommodated in an external sleeve (2) and retained therein by a disc holder (7) which closes the front of the sleeve (2) by means of a shutter (8), which retains the disc by retaining jaws (9), and which is latched in the sleeve by latching means (48) which can be moved by external means to remove the disc holder and the disc from the sleeve. Apparatus includes release levers (11) which release the disc holder (7) and an extraction mechanism (11, 13, 14) which withdraws the disc-holder/disc unit from the sleeve in such a way that the disc and disc holder remain inside the apparatus after withdrawal of the sleeve. Jaws (9) also retain the disc (2) outside the sleeve and can be moved relative to each other from the retaining position to a free position, in which the disc can be rotated and is clear of the retaining means, by external means only.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: July 18, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Marcelles B. M. Douwes, Cornelis H. M. Van Rijsewijk, Rudolf J. G. A. Van Der Hoorn, Cornelis Ouwerkerk
  • Device for cutting open the carcass of a slaughter animal
    Patent number: 4779307
    Abstract: Device for cutting through the pubis of the carcass of a slaughter animal, having on a slaughter yoke with a positioning element surrounded by a rotating circular first cutting element, a second cutting element and a sensor for locating the pubis position, combined into a functional unit, the movement of the positioning element being independently of same of the other elements.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: October 25, 1988
    Assignee: Nederlandse Centrale Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek
    Inventors: Rudolf J. G. A. van der Hoorn, Marcelles B. M. Douwes
  • Disc cassette
    Patent number: 4755982
    Abstract: A disc cassette includes a rotatable disc (1) contained in a disc-receiving space of an external enclosure (2), a front opening of the enclosure being closed by a closing member (7) which is latched in the enclosure by means of one or more resilient latching fingers (8) to retain the disc. The latching finger (8) pivots in a direction perpendicular to the plane of the disc (1) and cooperates with the side wall of a latching recess (12) formed in the inner side wall of the enclosure. A slot (15) formed in the main wall (3) of the enclosure (2) extends from the front opening of the enclosure into the latching recess but has a width which is smaller than the width at the latching recess and smaller than the width of the latching finger, and the end portion of the slot (15) which terminates in the front opening of the enclosure is covered by the portion (7A) of the closing member which projects from the enclosure.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: July 5, 1988
    Assignee: U.S. Philips Corporation
    Inventor: Marcelles B. M. Douwes