A - Human Necessities – 44 – B
Patent
A - Human Necessities
44
B
24/49
A44B 19/04 (2006.01) A44B 19/06 (2006.01) A44B 19/34 (2006.01) A44B 19/40 (2006.01)
Patent
CA 1097893
ABTRACT OF THE DISCLOSURE An invisible slide fastener includes fastener elements secured to folded-under portions of a pair of mounting tapes. Each fastener element has a main body beneath the folded-under portion of the respective tape, a leg extending upward from the main body past the inner edge of the respective tape and over the respective folded-under portion inside the fold formed thereby, a neck extending inwardly from the main body, and a head member joined by the neck inwardly of the main body. Each head member has an inner shelf formed on the inner edge thereof and extending parallel to the tapes, with the inner shelf being in the form of a ledge cut into the upper portion of the inner edge of the head member. Each main body has two outer shelves formed on the inner edge of the main body and extending parallel to the tapes for engaging portions of the inner shelves of adjacent elements on the opposite tape, the outer shelves being in the form of extensions of the upper portion of the main body adjacent both sides of the neck. A pair of outer surfaces on the outer edge of the head member extend perpendicular to the tapes continuously through the full height of the head member for engaging the outer surfaces of adjacent elements on the opposite tape. Direct intercontact between the inner and outer shelves on opposing elements prevent disengagement of the fastener by relative movement of opposing elements perpendicular to the plane of the fastener.
275498
Ridout & Maybee Llp
Textron Inc.
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