Temple fastener for eyeglass frames

Details Temple fastener for eyeglass frames Temple fastener for eyeglass frames

1987-05-29

1989-07-04

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Connectors

351121, 16228, G02C 522, G02C 514

Patent

active

048446068

ABSTRACT:
A hinge connection for eyeglasses connects a lens frame to a temple piece with a threaded pin which does not loosen or fall out of the hinge even after repeated hinging movement of the temple piece. The hinge has a bore which is lined with an insert made of a material having cold flow characteristics. The liner has an untapped bore with a diameter slightly smaller than the major diameter of the pin. The pin has interrupted ferrule threads. When the pin is pushed into the bore of the liner, cold flow reformation of the bore locks the pin in place. The pin can be removed from the liner when desired by rotating the pin to cause its threads to form complementary helical thread in the bore wall and thereby thread its way out of the liner.

REFERENCES:
patent: 2160686 (1939-05-01), Splaine et al.
patent: 2220453 (1940-11-01), Lowres
patent: 2328708 (1943-09-01), Cook et al.
patent: 4406527 (1983-09-01), Schonhut
patent: 4461549 (1984-07-01), Reese et al.

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