Patents by Inventor Gerhard W. Wolff

Gerhard W. Wolff 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).

  • Manual tape apparatus with generator for providing electrical power
    Patent number: 4001887
    Abstract: A manually operated tape playback apparatus includes a drive shaft which is manually rotated and means coupling the drive shaft to a self-contained generator for supplying power to an electrical amplifier coupled to a tape pickup head and including a speaker for reproduction of information recorded on the tape. The rotor of the generator is also coupled to a flywheel in turn coupled to a tape capstan for controlling the tape playback speed. The pickup head is mounted to a control arm movable between playback and rewind positions which arm is coupled to forward and reverse spindle drive means and to the drive shaft for controlling the movement of tape between reels and across the pickup head during playback and at an increased speed for rewinding the tape.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: January 4, 1977
    Assignees: Stephen A. Platt, Vernet B. Platt, Gerhard Walter Wolff, Jeanine V. Wolff
    Inventors: Stephen A. Platt, Gerhard W. Wolff
  • Animated fireplug for teaching fire prevention
    Patent number: D262545
    Type: Grant
    Filed: January 3, 1980
    Date of Patent: January 5, 1982
    Inventor: Gerhard W. Wolff