Plastic hinge

Details Plastic hinge Plastic hinge

1993-08-25

1995-03-21

Bradley, P. Austin

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Eyeglass hinge

16DIG13, G02C 522

Patent

active

053983777

ABSTRACT:
A pivotal support portion 2 protruding from a frame 1 is clamped between a pair of clamp ends 4 provided at the tip of an earpiece 3. A protrustons 7 formed in the inner surface of each of said pair of clamp ends 4 is fitted within a corresponding pivot hole 6 in each of the upper and bottom surface of said pivotal support portion 2. A lock mechanism 11 including protuberances 12 and recesses 13 is provided at a position where said clamp ends 4 are contacted with said frame 1. When said earpiece 3 is opened or enlarged to the maximum open position, said protuberances 12 become fitted within said respective recesses 13, so as to prevent said clamp ends 4 from separating in the outward direction.

REFERENCES:
patent: 3156756 (1964-11-01), Seaver
patent: 3744887 (1973-07-01), Dunbar
patent: 4699479 (1987-10-01), Metcalfe

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