Patents by Inventor Leroy F. Hollenbeck, Jr.

Leroy F. Hollenbeck, Jr. 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: 4424424
    Abstract: Single pole, triple throw battery selector switches are provided with locks to prevent unauthorized use. Rotation is prevented between the selector knob and housing by having a semicircular groove with a locking position at the end thereof in the top cover of the battery selector switch and a locking pin projecting from the underside of the selector knob into engagement with the grooves. The selector knob is locked with the batteries disengaged when the locking pin engages the locking position groove by turning a locking cylinder with a key.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: January 3, 1984
    Assignee: Perko, Inc.
    Inventor: Leroy F. Hollenbeck, Jr.
  • Patent number: 4280028
    Abstract: Single pole, triple throw battery selector switches are provided with locks to prevent unauthorized use. Rotation is prevented between the selector knob and housing by having a semi-circular groove with a locking position at the end thereof in the top cover of the battery selector switch and a locking pin projecting from the underside of the selector knob into engagement with the grooves. The selector knob is locked with the batteries disengaged when the locking pin engages the locking position groove by turning a locking cylinder with a key.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 21, 1981
    Assignee: Perko, Inc.
    Inventor: Leroy F. Hollenbeck, Jr.
  • Patent number: D260637
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: September 8, 1981
    Assignee: Perko, Inc.
    Inventor: Leroy F. Hollenbeck, Jr.