US PATENT SUBCLASS 351 / 68
.~.~ With resilient extensible bridge


Current as of: June, 1999
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351 /   HD   OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING

41  DF  SPECTACLES AND EYEGLASSES {29}
65  DF  .~ Pince-nez type (including pince-nez bridges, nose grips and nose pads therefor) {8}
68.~.~ With resilient extensible bridge


DEFINITION

Classification: 351/68

(under subclass 65) Subject matter wherein the lenses are connected by a bridge which may be extended in length against the biasing action of a spring as where the bridge comprises two arms sliding one beside or within the other together with an expandable spiral spring around the arms to force the lenses nearer together and the nose grips into contact with each side of the nose.

(1) Note. The bridge may extend tangentially along the top edges, behind, or in the plane of the lenses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65, for pince-nez eyeglasses with flexible bridges or bow springs as where the bridge itself is made from flexible material.