Adjustable spring-loaded hinge device, particularly for spectacl

Details Adjustable spring-loaded hinge device, particularly for spectacl Adjustable spring-loaded hinge device, particularly for spectacl

1987-03-02

1988-12-27

Silverberg, Fred A.

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

Hinge

Eyeglass hinge

16291, 16296, 16298, G02C 522

Patent

active

047930241

ABSTRACT:
The hinge device comprises a recess formed in the rod or stem of a pair of spectacles and accommodating a leafspring. The spring has a conformation such that it pivots on the inner surface of the recess and cooperates with an element, rigidly associated with the front of the spectacles and pivotally connected to the rod. An adjustment screw is provided which extends into the recess and which interferes with the spring to vary the biasing action exerted on the element, when rotating the rod relatively thereto.

REFERENCES:
patent: 1599843 (1926-09-01), Schumacher
patent: 3990521 (1976-11-01), Ankenman et al.
patent: 4618226 (1986-10-01), Sarter et al.

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