Automatic eyewear strap winding device

Details Automatic eyewear strap winding device Automatic eyewear strap winding device

1997-07-11

1999-04-27

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With support or holder

351157, G02C 300

Patent

active

058984720

ABSTRACT:
An eyeglass holding device (7) has a strap (4') with a clip for attaching the strap end to an eyeglass frame (1'). The strap feeds in and out of a housing (8) which contains reel (14) on which the cord winds. The housing is detachably mounted on a hat or shirt for example with VELCRO. The strap winding mechanism inside the housing includes a torsion spring (21) for retracting the strap back into the housing; a rachet (18) and pawl (17) acting as lock to stop the spring from pulling the strap in once it is pulled out; and a button (16) to release the lock. The eyeglasses can be pulled to bring out any length of the straps. The torsion spring retracts the cords while the button is pressed.

REFERENCES:
patent: 5488441 (1996-01-01), Pomatti

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