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US 4,566,236 AGranted
Greenhouse structure element
OwnerJohn A. Poundinventor
Life of this patent
Estimating the term…
Abstract
A device for holding flexible sheet material to a structure including a fixed element that is attachable to the structure and has at one end an elongated cavity and at the other end an intrinsic lock mechanism and a locking device having at one end an arm for holding sheet material against the interior portion of the cavity and for bearing against the open edge of the cavity, the locking element also having the second half of an intrinsic lock device that is adapted to snap into the intrinsic lock device half on the fixed element.
Claims2
An assembly to hold the edge of a flexible sheet to a structure comprising:
- a fixed piece including means to be fixed to said structure, said fixed piece having a cavity opening between an edge and a bearing edge, a first intrinsic lock element spaced from said cavity opening, a locking piece including a sheet engaging element extending from one end thereof, said sheet engaging element including a cavity bearing portion and a cavity edge bearing portion, and a second intrinsic lock element spaced from said sheet engaging element to engage said first lock element in locking relationship when said sheet engaging element is engaged with the interior of said cavity, one of said first intrinsic lock element and second intrinsic lock element having a detent and the other of said lock elements having a nose spaced and dimensioned to snap into said detent.
Dependencies are inferred from the claim text.