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US 5,329,738 AGranted
Composite structure, especially for building
OwnerFrancis Ovaert, Pierre Potetinventors
Life of this patent
Estimating the term…
Abstract
An assembly member includes a rod having at one end thereof a head for driving the rod in rotation, a threaded part at an opposite end and, between the threaded part and the head, a smooth part the diameter of which is markedly larger than a threadroot diameter of the threaded part. Such member is used for the fastening of insulating layers of facade coverings or claddings.
Claims16
A composite structure comprising:
- a metal sheet;
- a layer of material;
- at least one fastening device fastening said layer to said metal sheet, said fastening device comprising a rod-shaped member having first and second opposite ends, a head at said first end for enabling rotation of said member, a threaded portion at said second end for threading through said metal sheet upon rotation of said member, said threaded portion including a thread having a thread-root diameter, and a smooth portion between said head and said threaded portion and immediately adjacent said threaded portion;
- said fastening device being extended through said layer of material with said head bearing toward a side of said layer of material remote from said metal sheet and with said threaded portion threaded through and entirely beyond said metal sheet;
- and
- said smooth portion having a diameter, at least immediately adjacent said threaded portion, substantially greater than said thread-root diameter of said thread, such that upon said fastening device being rotated with said threaded portion threaded beyond said metal sheet said smooth portion internally upsets said metal sheet and forms integral therewith a flange having an internal surface substantially complementary to and mating with said smooth portion and forming a guide therefor.
3 more elements
Dependencies are inferred from the claim text.