Patents by Inventor Stephanus A. Mulder

Stephanus A. Mulder 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).

  • Patent number: 6039601
    Abstract: A handheld transmitter has a housing in which there are disposed a printed circuit board and a battery. The circuit board and the battery are electrically connected by a contact spring. The contact spring has two preshaped spring arms each on its two ends, which are elastically braced against the printed circuit board and against the battery. The contact spring ensures that the battery and the printed circuit board are at all times securely connected electrically without being subject to disconnection caused by shaking the handheld transmitter.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: March 21, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Josef Kraiczyk, Stephanus Mulders
  • Patent number: 5140291
    Abstract: An inductive device comprises a soft magnetic core which consists of two E-shaped core halves (1), each of which comprises three parallel limbs (5, 7) which are interconnected by a yoke (9). The core halves (1) are arranged against one another by way of the free ends of the limbs (5, 7), a coil former (3) being provided around the central limbs (7). The outer limbs (5) extend between an upper boundary plane (25) and lower boundary plane (27), which planes extend parallel to the longitudinal directions of the limbs (5, 7) and the yokes (9), the distance between said planes being determined by the height (x) of the outer limbs (5) which is greater than the height (y) of the central limbs (7).
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: August 18, 1992
    Assignee: U.S. Philips Corporation
    Inventors: Stephanus A. Mulder, Paul N. Faase, Johannes H. Tobben, Eelco G. Visser