John Dennis Irby

US Patent:

47782323, Oct 18, 1988

Filed:

Feb 26, 1987

Appl. No.:

7/018996

Inventors:

John D. Irby - Plano TX

Assignee:

Varo, Inc. - Garland TX

International Classification:

G02B 2608

US Classification:

350 64

Abstract:

A device and method for preloading a force against two counter-reciprocating (116 and 118) members has a rocker arm (136) having a fulcrum (114) and a predetermined force constantly applied against said rocker arm at approximately said fulcrum (114). Said rocker arm (136) bears against a contact surface (148 and 150) on each counter-reciprocating member. The rocker arm (136) is positioned so that, as said members counter-reciprocate, said rocker arm (136) maintains its contact with each of said contact surfaces (148 and 150) and transfers at least a portion of said predetermined force to each of said contact surfaces (148 and 150) throughout said counter-reciprocation of said members.