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:
Jun. 09, 1987
Filed:
Apr. 25, 1985
H Frank Fogleman, San Diego, CA (US);
Randall E Parrish, San Diego, CA (US);
Protech Partnership, San Diego, CA (US);
Abstract
An apparatus for releasing a locking arrangement in response to an electrical control signal to unlock a closure member, employs a pair of first and second piston cylinder assemblies that are facing one another and disposed in alignment with one another within a housing for actuating alternatingly in response to the control signal. The assemblies have reciprocatively mounted plungers for moving extensively toward and away from one another along a rectilinear path of travel. A shuttle is slideably mounted within the housing and connected on opposite sides to the distal ends of the plungers to move toward an actuated one of the cylinder assemblies. A locking cam disposed on the shuttle receives and locks a roller to position the roller partially outwardly of the housing within a side opening in the housing, and a pair of first and second unlocking cams enable the roller to move inwardly of the housing when either one of the cylinder assemblies is activated. The locking arrangement includes a locking mechanism with a slide member that is adapted to be moved manually for releasing the closure member, and the slide member has an opening for receiving the roller to lock the closure member.