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US 3,935,619 AGranted
Grumment for sail cloth
AssigneeGaastra B.V.
InventorDouwe Gaastra
Life of this patent
Estimating the term…
Abstract
A grumment for sail cloth in which two rings are positioned around the edge of a hole therein which edge has been ravelled and has a thermosetting adhesive smeared thereon and tightly clamped against the edge by a torus-shaped collar enclosing the rings.
Claims3
A grummet assembly for use in a material, such as sail cloth or the like, comprising
- there being an opening in said material, the edge of said opening being ravelled and having a thermosetting adhesive smeared thereon;
- a first ring having an inner diameter substantially the same as said opening in contact with one side of said material at the edge of said opening;
- a second ring having an inner diameter substantially the same as said opening in contact with the other side of said material at the edge of said opening;
- a torus-shaped collar enclosing said rings and the edge of said opening so as to tightly clamp said edge between said rings.
1 more element
Dependencies are inferred from the claim text.