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:
Dec. 09, 1997
Filed:
Nov. 22, 1995
Gilles Granziera, Pontarme, FR;
Loh Optikmaschinen AG, , DE;
Abstract
A tool for the precision processing of the optical surfaces of lenses has an elastic membrane (10), connected to a rigid holder (20), which incorporates a processing segment (11) and a bellows-type segment (12). Together, the membrane (10) and the holder (20) delimit a cavity (15), which is filled with a material (16) that becomes ductile under specific conditions, and which can be induced, at will, to form a flexible or rigid supporting layer for the membrane (10). When the material (16) is in its ductile state and the processing segment (11) contacts the optical surface, the bellows-type segment (12) exerts forces on the ductile material (16) which cause it to press the processing segment (11) against the optical surface, so that the tool retains its shape after the ductile material (16) has become rigid. As this tool can be used to shape any type of optical surface, it is particularly well-suited for the processing of prescription lens eyewear.