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. 20, 1982
Filed:
May. 02, 1980
Canadian Patents & Development Ltd., Ottawa, CA;
Abstract
A collapsible arch forming assembly comprising a flexible member and two tension line lengths with one tension line length threaded through even number guides, counted from one end of the flexible member and the other tension line length threaded through the odd number guides. Tensioning the tension line lengths arches the flexible member into the arch and this may be done by a winch assembly or inserting spreader bars at the guides to deflect the free one of the first and second tension line lengths at that position. The spreader bars may be replaced by, for example, mechanical jacks or fluid pressure actuated jacks particularly for such applications as using the arch forming assembly as formwork upon which concrete is poured.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile