Hinge pin assembly for window shade radar membrane
US5124715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Sep 11, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1235
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.