Patents by Inventor Peter J. Steven

Peter J. Steven 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).

  • Magnetic tape apparatus for controlling a back tension of a magnetic tape running on a rotary drum
    Patent number: 5758835
    Abstract: A magnetic tape apparatus includes a head which reproduces data from or records data onto a magnetic tape, taken out from a cassette, when the tape is running. A supply reel shaft rotates a supply reel to supply the tape from the cassette to the head. A take-up reel shaft rotates a take-up reel to wind the tape from the head around the take-up reel. A back tension applying mechanism has a brake part which presses the supply reel shaft to produce a braking force on the supply reel shaft, the back tension applying mechanism applying a back tension to the tape when the braking force is produced. A pressing force varying mechanism controls a pressing force of the brake part on the supply reel shaft such that the pressing force is maintained at an appropriate level for a type of cassette.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: June 2, 1998
    Assignees: Mitsumi Electric Co., Ltd., Hewlett-Packard Company
    Inventors: Ryoichi Annen, Keiichi Setsumasa, Naoki Ode, Hugo William Maule, Peter J. Steven