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:
Jan. 23, 1979
Filed:
Oct. 28, 1977
Joe D Stith, Muskogee, OK (US);
Other;
Abstract
An apparatus for grinding cylindrical lenses, comprising a frame supporting a motor-driven apparatus in which a vertical driving pin is adapted to be moved parallel to itself, in complex motion, which is substantially non-repetitive. Three separate drive means are provided for producing eccentric motion of selected amplitude, and individually controllable relative phase angle with each other. The driving pin is connected with a universal joint, to a vertical post which is pivoted at its bottom end, and adapted for angular motion forward and backward and to each side, but does not have any component of rotary motion about its own axis. Arm means are provided attached to the post, for pressing a lens block holding a lens to be ground, against a stationary lap, so as to grind a cylindrical surface on the lens.