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:
Nov. 24, 1992
Filed:
Feb. 20, 1991
Kenneth Leis, Villanova, PA (US);
Other;
Abstract
An electrically operated, air-driven pivotal sign device includes a housing and a sign assembly pivotally mounted to the housing. Within the housing, an electrically driven air compressor is pneumatically coupled through tubing and a three-way, electrically controlled valve, to a spring return type air cylinder coupled with a shaft from the pivotable sign assembly. Current supplied through a single wire to the device activates the compressor and closes the valve to atmosphere permitting pressurization of the air cylinder. The compressor is shut off automatically when the sign assembly is deployed. The sign assembly remains deployed until current is cut off to the valve, which causes the valve to vent the pneumatic coupling to atmosphere. The single wire also supplies current to a flasher device within the housing which flashes lights provided on the sign assembly simultanously with the pivotal deployment of the sign assembly.