The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 1985
Filed:
Aug. 26, 1983
Applicant:
Inventors:
Robert J Johnston, Patterson Heights, PA (US);
Stephen G Layciak, Brighton Township, Beaver County, PA (US);
Dominic Colista, Ambridge, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05G / ;
U.S. Cl.
CPC ...
7448 / ; 200 / ; 200 / ;
Abstract
A unique interlock mechanism for two pushbuttons or other linearly operated devices, requiring no mechanical linkages or complex assemblies. The interlock mechanism essentially comprises an interlock member having first and second restraining portions disposed within a housing so that when one of the pushbuttons is operated, the interlock member rotates positioning itself under the second pushbutton, interfering with and making it impossible to be operated.