Self adjusting spectacle frame assembly

• US 3,923,384 A
• Filed: 10/03/1974
• Issued: 12/02/1975
• Est. Priority Date: 10/03/1974
• Status: Expired due to Term

• Current Assignee: Foster Grant Corporation (Formerly Known As Foster Grant Sunglasses Incorporated
• Original Assignee: Conrad L. Leblanc
• Inventors: Leblanc, Conrad L.
• Primary Examiner(s): Sacher, Paul A.
• Application Number:
  US05/511,824
• Time in Patent Office: 425 Days
• Field of Search: 351/113,121,153 2/14T 16/128A
• US Class Current: 351/113
• CPC Class Codes: G02C 2200/22 Leaf spring
• CPC Class Codes: G02C 5/2254 comprising elastic means other than coil spring

Abstract

A spectacle assembly which automatically provides sufficient temple pressure to insure a snug fit on the head of the wearer is provided. The assembly includes a leaf spring pressure means attached to the temple of the spectacle which means is adapted to coact with the corner portion of the spectacle front frame member such that the spring is compressed substantially along its longitudinal axis after the leading edge of the spring contacts the front frame corner portions as the temple members are pivoted towards the open position.

Claims

1. A spectacle assembly comprising:

a. a front frame member for retaining a pair of lenses in a plane intersecting the line of vision of the wearer;

b. corner portions integral with said frame member at the lateral ends thereof, said corner portions including a rearwardly disposed abutment portion;

c. a pair of temple members, one pivotally mounted on each of said corner portions and extending rearwardly therefrom;

d. a pair of resilient leaf spring members, one mounted longitudinally on the foreward portion of each of said temple members, said spring members having a rearward portion, a foreward portion, and a foreward edge, the rearward portion of said spring members being rigidly fixed to the interior surfaces of said temple members and the foreward portion being unattached to said temple members, the foreward edge of said spring members positioned for abutting contact with the abutment portion of said frame corner portions;

e. hinge means for connecting said temple members to each of said corner portions and for pivotally positioning the foreward edges of said spring members into and out of contact with the abutment portion of said frame corner portions, the foreward edge of each of said spring members being disposed external and lateral to said hinge means whereby said leaf spring members are compressed along their free length by abutting pressure contact with said abutment portion when said temple members are pivoted toward the open position urging said temple members toward a closed position with respect to the spectacle front frame member.

2. The spectacle assembly of claim 1 wherein said hinge means comprises an inner barrel component integral with said corner portions and an outer forked barrel component integral with said temples.

3. The spectacle assembly of claim 2 wherein the resilient spring members are prestressed in an inwardly bowed shape, the foreward portion of said spring members being biased for sliding contact with the inner barrel component of said hinge means.