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:
Mar. 13, 1990
Filed:
Oct. 21, 1987
Billy D Hunter, Muskogee, AR (US);
Joseph Tusinski, Muskogee, OK (US);
Other;
Abstract
A toric finer-polisher for the fining and/or polishing of a toric lens comprises a lap table for holding a tool, a spindle on which the lap table is mounted, a rocker arm assembly for holding the lens in contact with the tool, and a motor for driving the spindle and lap table so as to cause relative motion between the tool and the lens, thereby finishing the surface of the lens. The spindle is fixed at its lower end to a gimbal, and is contacted at an intermediate point along the spindle by a timing belt connected to the motor, so as to maximize a gimbal radius of the lap table assembly, thus maintaining a parallel relationship between the tool axis and the lens axis during finishing of the lens surface. Other features of the invention include provision of all motions (rotational, orbital and transverse) by a single motor, provision of a two-spindle arrangement in which dual spindles are timed in their oscillatory motions so as to cancel normally encountered reactionary forces, provision of a gear reduction mechanism between the motor and a break-up motion assembly so as to provide break-up motion on a reduced-speed basis, and provision of a pressure-operated lap table for holding the tool on the lap table surface under the influence of air pressure.