A - Human Necessities – 44 – B
Patent
A - Human Necessities
44
B
24/70.2
A44B 1/04 (2006.01)
Patent
CA 1307656
ABSTRACT OF THE DISCLOSURE A button device has a head member and a back member joined therewith, the head member having a central cavity dimensioned to receive an insert member with a press-fit. The insert member is generally dome-shaped with its peripheral wall upwardly tapered. The cavity is defined by an inner wall initially upwardly flared but deformed to taper when a peripheral ridge is clamped against the insert member by a punch capable of producing a clamping pressure of a bidirectional vector.
564002
Shinmi Masamichi
Watanabe Hirokazu
Gowling Lafleur Henderson Llp
Ykk Corporation
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