Fastener element arrangement
First Claim
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1. A hook-type fastener product for engaging loop elements to form a fastening, comprising a base;
- an array of parallel rows of hooks extending from the base, the hooks extending generally along the direction of their respective rows, each hook having first and second oppositely-directed sides directed sideways relative to its row, each hook comprisinga stem extending from the base to a distal end, anda head extending from the distal end of the stem to at least one tip, the head having first and second sides corresponding to the first and second sides of the hook,the sides of the hook head being differently constructed to cause a loop engaged to pull sideways against the first side of the hook head to be more firmly retained on the hook than a loop engaged to pull sideways against the second side of the hook head,a sufficient number of the hooks of the array having the first sides of their heads directed in the same sideways direction that the array of hooks, when engaged with loops, resists disengagement from the loops more strongly when pulled in a first sideways direction than when pulled in a second sideways direction opposite the first sideways direction.
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Abstract
A hook-type fastener product for engaging loop elements is disclosed, having parallel rows of hooks having differently constructed first and second sides. The hooks are arranged such that, when engaged with loops, they resist disengagement from the loops more strongly when pulled in one sideways direction than when pulled in the opposite sideways direction. The product has a common base from which the hooks, which are not limited to J-type hooks, extend. The first sides of the hooks may be flat and the second sides convex. Methods and an apparatus for producing the product are also disclosed.
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Citations
20 Claims
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1. A hook-type fastener product for engaging loop elements to form a fastening, comprising a base;
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an array of parallel rows of hooks extending from the base, the hooks extending generally along the direction of their respective rows, each hook having first and second oppositely-directed sides directed sideways relative to its row, each hook comprising a stem extending from the base to a distal end, and a head extending from the distal end of the stem to at least one tip, the head having first and second sides corresponding to the first and second sides of the hook, the sides of the hook head being differently constructed to cause a loop engaged to pull sideways against the first side of the hook head to be more firmly retained on the hook than a loop engaged to pull sideways against the second side of the hook head, a sufficient number of the hooks of the array having the first sides of their heads directed in the same sideways direction that the array of hooks, when engaged with loops, resists disengagement from the loops more strongly when pulled in a first sideways direction than when pulled in a second sideways direction opposite the first sideways direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification