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:
Apr. 16, 1985
Filed:
Jan. 27, 1984
John S Ludwigsen, Naperville, IL (US);
Chicago Bridge & Iron Company, Oak Brook, IL (US);
Abstract
A passive support structure comprises rigid compression members in which only compressive forces are generated, and extendable tensile members, which elongate as necessary to accommodate externally applied forces. The structure incorporates two spaced members, a lower base member and an upper support member, interconnected by a plurality of rigid compression members, the ends of which are pivotally attached to both the base and the support member. Because of the pivotal connections, only axial compressive forces can be generated within the compression members. Also interconnecting the base and support members are elastic tensile members, which yield as necessary to accommodate the applied force, and in which energy absorbing and dissipating elements can be incorporated.