Patents by Inventor Selwyn L. Lissack

Selwyn L. Lissack 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: 4316648
    Abstract: The by-directional brushless electric motor scanner is an optical scanner that reflects a beam of light to a variety of points thereby creating what appears to be continuous geometric and other figures and it comprises a base, a by-directional brushless electric motor coupled to the base, a shaft having a rest position and a shaft axis wherein the shaft is coupled to the motor so that the shaft is rotatable about the shaft axis by the motor, a reflecting surface coupled to the shaft so that the reflecting surface is rotatable and a spring coupled to the base and to the shaft so that the spring will exert a force on the shaft toward the rest position when the shaft is rotated about the shaft axis from the rest position.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: February 23, 1982
    Inventor: Selwyn L. Lissack