The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 1996
Filed:
Oct. 28, 1994
Applicant:
Inventor:
Perry Sepielli, Richboro, PA (US);
Assignee:
Iolab Corporation, Claremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
307119 ; 307112 ; 604 19 ; 604 27 ; 606 32 ; 606 41 ; 128760 ;
Abstract
A footswitch for ophthalmic surgery includes a rotatable foot pedal, a spring member which biases the foot pedal to resist rotation and an adjustment mechanism for adjusting the bias of the spring member to a surgeon selected value. In an illustrated embodiment, the adjustment mechanism includes a worm screw gear assembly which is used to vary the amount of torque generated by a coil spring on a shaft upon which a pedal is mounted. As a worm gear is rotated by a thumb wheel, a spur gear is rotated to wind or unwind coil spring thereby increasing or decreasing the amount of tension exerted by coil spring on a shaft.