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. 23, 1992
Filed:
Sep. 11, 1990
Peter K Homer, Langhorne, PA (US);
Grumman Aerospace Corporation, Bethpage, NY (US);
Abstract
Each antenna plane of a multi-layer radar membrane is secured at its edges to a hinge bar assembly. The purpose of the hinge bar assembly is to expand the layers, normally collapsed during a stowed condition, to parallel spaced layers when deployed. Each hinge assembly includes double bars pivotally mounted to a base section, the latter being snap-fastened to a ground plane. The ends of the hinge bars are snap-fastened to corresponding antenna plane strips and the central portion of each hinge bar has a spring extending outwardly therefrom for securement to a base abutment. Thus, when the membranes are freed from external restraint in preparation of deployment, the springs pivot the hinge bars to a generally perpendicular relationship with respect to the ground plane and antenna planes thus separating oppositely positioned antenna planes to the desired tensioned and parallel spaced relationship with respect to the ground plane.