Detachable cam-biased eyeglass temples
AssigneeJ. W. Envisions, Inc.
InventorPasquale J. Matera
Life of this patent
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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.
Claims13
Eyewear, comprising:
- a frame supporting a lens;
- two corner pieces, each located at opposite sides of said frame, said comer pieces each including a rear-facing lug;
- two temple bars, each detachably affixed to one of said rear-facing lugs;
- hinge means affixed to each of said lugs for hingeably connecting said lugs to corresponding attachment means on said temple bars;
- a pair of retractable jaws located at the front end of each of said temple bars;
- a slot through each of said temple bars dividing said jaws, said slots lying substantially along a longitudinal axis of each temple bar;
- and
- a keyhole through each temple bar centered within each of said slots such that jaws on each temple bar are spread apart by turning a key inserted into the keyholes, whereby said frame and said temple bars are detached.
Eyewear, comprising:
- a frame supporting a lens;
- two corner pieces, each located at opposite sides of said frame, said corner pieces each including a rear-facing lug:
- two temple bars, each detachably affixed to one of said rear-facing lugs:
- hinge means affixed to each of said lugs for hingeably connecting said lugs to corresponding attachment means on said temple bars being a portion thereof, whereby said temple bars may rotate with respect to said frame between an open position and a folded position;
- a cam surface with an axis of rotation on each of said lugs;
- leaf spring means unitary with said temple bars, whereby said spring means are displaced by contact with said cam surface as the temple bars are rotated about the cam axis such that temple bars are resiliently biased toward said folded position when nearby said folded position and are biased toward said open position when nearby said open position;
- and
- a pair of retractable jaws located at the front end of each of said temple bars, each jaw including individual leaf spring means separated by a slot extending laterally entirely through each of said temple bars lying substantially along a longitudinal midline of each temple bar and extending through the front edge thereof.
Dependencies are inferred from the claim text.