Detachable cam-biased eyeglass temples

Details Detachable cam-biased eyeglass temples Detachable cam-biased eyeglass temples

1998-05-13

1999-10-05

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Temples

351113, 351153, G02C 514

Patent

active

059632968

ABSTRACT:
An eyeglass construction includes a hinge joint and temple bars with spreadable jaws with apertures that receive frame hinge pins. A unique key-and-lock mechanism is provided for spreading the temple jaws and holding them apart while interchangeable temple bars are removed and installed. A separate key having a lobe-shaped shank with an elliptical profile corresponds to a similar aperture through a slot in each temple bar so that when the key is turned, the jaws at the end of the temple bar are spread apart and held in a retracted state. A simple internal leaf spring molded into the temple bar bears upon a cam surface of the eyeglass frame so that a positional biasing of the temple bar is achieved.

REFERENCES:
patent: 2210507 (1940-08-01), Spill
patent: 3899840 (1975-08-01), Maillet
patent: 4153347 (1979-05-01), Myer
patent: 4605293 (1986-08-01), Blumenthal
patent: 4832478 (1989-05-01), Salce
patent: 4895438 (1990-01-01), Zider et al.

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