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:
Sep. 14, 1993
Filed:
Nov. 30, 1992
Masaki Tabata, Hyogo, JP;
Takayuki Koizumi, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An expandable framework structure is formed by connecting together a plurality of polygonal prism-like framework structure modules with one side of a module serving also as one side of another module adjacent thereto. A module employed comprises stems each having a joint as well as a slide hinge, pairs of pantograph-like diagonal members and cables. This serves to provide an expandable framework structure having high stability and reliability and which is free from any rattling of the connecting pin at the pin connected portion. Thus, the expandable framework structure provided is highly rigid and hence is capable of maintaining a stable configuration after developed. The module employed also comprises vertical frames, foldabIe members, main hinges, intermediate hinges and diagonal cables. The rotational axis of the pin of the intermediate hinge deviates from the center axis of the foldable member realized when it has been unfolded. The foldable members and the diagonal cable, when stretched, serve to maintain the configuration of the expandable framework structure stable without additional latch mechanisms. Thus, an expandable framework structure provided requires less components and hence is light and easy to stow away.