Patents by Inventor Willem H. Stigter

Willem H. Stigter 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).

  • Tape reel mounting and coupling for a magnetic-tape cassette
    Patent number: 4545550
    Abstract: In a magnetic-tape cassette having adjacent flanged reels mounted for rotation in a housing, coupling members connect the reels to the winding mandrels on a cassette apparatus. Each member has an axial portion extending through the housing for engagement by a spring which presses the reel against an apparatus reel disc, and radially resilient limbs extending in the opposite direction for engaging the mandrel.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: October 8, 1985
    Inventors: Joost M. Wolf, Hendrik A. Post, Willem H. Stigter, Gerard J. van der Brug, Joannes H. F. C. Sieben