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:
Jul. 24, 1990
Filed:
Jun. 09, 1988
Applicant:
Inventors:
John T Winthrop, Wellesley, MA (US);
Alexander F Menyhart, Brimfield, MA (US);
James Duszlak, Dudley, MA (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
51277 ; 5121 / ; 5128 / ; 33 28 ;
Abstract
A thin sheet of flexible material shaped like an inverted 'T', is applied to the aspheric distance portion of a progressive-addition ophthalmic lens, to provide stable three-point contact for blocking the lens prior to second-side surfacing in the prescription laboratory.