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:
May. 25, 1982
Filed:
Oct. 03, 1980
Michael S Baran, St. Francis, WI (US);
Gary C Fillus, South Milwaukee, WI (US);
Eric L Long, Northbrook, IL (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A push button switch has an operator that is mounted for axial movement within a bezel towards its exit end. A contact assembly is disposed across the exit of the bezel. The contact assembly includes a pair of termination areas formed on a substrate and a shorting patch disposed on a flexible membrane, the shorting patch being separated from the termination areas by a spacer to provide a switch air gap. A second spacer is disposed on the other side of the substrate and forms an air reservoir that communicates with the switch air gap through an aperture in the substrate. When the operator is moved against the membrane to close the switch air gap, air is circulated into the air reservoir increasing the pressure therein, and returns to break the contact of the termination areas with the shorting patch when the operator is retracted.