Patents by Inventor Alton H. Cooper

Alton H. Cooper 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).

  • Clutch/brake mechanism
    Patent number: 4463933
    Abstract: There is disclosed a clutch/brake mechanism of the "disc" type wherein the coacting friction producing members are severally configured of frusto-conical and planar form whereby sealing contact is maintained at the peripheral surfaces thereof when in a brake-released condition to thereby prevent entrance of external contaminants into the brake-clutch mechanism.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: August 7, 1984
    Assignee: Columbus McKinnon Corporation
    Inventors: Kenneth D. Schreyer, Alton H. Cooper
  • Precise load positioner
    Patent number: 4361312
    Abstract: A device for precisely positioning a hoist suspended load which operates by temporarily releasing the hoist brake for a predetermined limited time period without actuating the hoist motor so that the load is lowered through a small incremental distance by the influence of its own weight. A control signal may be generated by a delay timer, a repeat cycle timer, a digital timing device or a device for detecting the degree of movement of the load carried by the hoist.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: November 30, 1982
    Assignee: Columbus McKinnon Corporation
    Inventors: Kenneth D. Schreyer, Alton H. Cooper