Patents by Inventor Bernhard Duttenhofer

Bernhard Duttenhofer 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).

  • Push-button on a sewing machine
    Patent number: 6192815
    Abstract: A push-button on a sewing machine is provided with a bracket rigidly connected to a sewing machine housing. A key member is mounted axially displaceably in a hole of the bracket with a stop for limiting its outwardly directed displacement and with a switch. The switch may be arranged on the bracket and can be actuated by the key member. The key member has a key stop for limiting its displacement directed toward the interior of the housing. An elastic hook-shaped holding mechanism extends into the displacement path of the key stop and fixes the switch supported on the bracket. The elastic hook-shaped holding mechanism is arranged on the bracket.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: February 27, 2001
    Assignee: G.M. Pfaff AG
    Inventor: Bernhard Duttenhofer