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Document Number
US Patent 4354331
Issued Date
October 19, 1982
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Abstract
A collapsable structure including a folding strut one end of which is pivoted to a rigid element to enable said strut to be rotated from a retracted position to an extended position, said strut having an abutment surface spaced away from the pivot and extending in a plane substantially parallel to the axis thereof, said surface being shaped to engage a co-operating engagement surface carried on said rigid element to locate said strut in its extended position, and releasable means for causing said surfaces to be held in contact with each other.
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Collapsable structures - US Patent 4354331 Drawing
Drawing from US Patent 4354331
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Number of Claims:
18
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Published
October 19, 1982
Application Number
06/207,442
Filed
November 17, 1980
US Classification
52/66  
Int'l Classification
A47B   43/00   (20060101)   B63B   7/00   (20060101)   E01D   15/12   (20060101)   E01D   15/00   (20060101)   E04B   1/344   (20060101)   E04B   1/348   (20060101)  
Assistant Examiner
Attorney/Law Firm
Parent Case
This application is a continuation, of application Ser. No. 968,734, filed Dec. 12, 1978.
Priority Data
Dec 15, 1977 [GB] 52334/77
USPTO Field of Search
52/66   52/69   312/140.2   217/47   217/48   217/46   220/16   296/173   296/176  
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Description
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