Patents by Inventor Edward Peterhoff

Edward Peterhoff 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: 4326285
    Abstract: In order to improve the performance of a stereo phonograph cartridge which includes a base, first and second piezoelectric transducers, first and second individual elastomeric blocks mounting the first and second transducers to the base depending downwardly in a cantilevered manner in horizontal spaced relationship, first and second separate elastomeric stabilizers mounted to the base in horizontal spaced relationship with each other and directly below the first and second transducers, a resolver having four connecting points contacting respectively to the first and second transducers and the first and second stabilizers, a pivot anchor coupling the resolver in a tensioned manner to the base, the pivot anchor being attached to the resolver at a point which is equidistant from each of the four connecting points, and a stylus bar extending from the resolver along the axis of the pivot anchor, the stylus diameter is reduced to thereby reduce stylus mass, the size of the resolver and stabilizers is reduced to per
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: April 20, 1982
    Assignee: Micro-Acoustics Corporation
    Inventors: Norman H. Dieter, Jr., Edward Peterhoff