Patents by Inventor Martin A. Opyrchal

Martin A. Opyrchal 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: 3957144
    Abstract: A self-contained mechanical actuator, such as a jackscrew, which includes a housing in which a drive shaft assembly connects a power source to the input side of a speed reduction gear train, the output of which is associated with load-bearing means for manipulation of a load. A brake is provided in association with the drive shaft assembly where a minimum braking force can be used to maximum advantage. The brake includes a carrier member mounted about the drive shaft assembly solely by a plurality of ball elements carried by the carrier member and biased against the drive shaft assembly to apply a braking force against the shaft.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: May 18, 1976
    Assignee: Duff-Norton Company, Inc.
    Inventor: Martin A. Opyrchal