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. 08, 1986
Filed:
Aug. 23, 1984
Applicant:
Inventor:
Gerard Lombard, Velaines, FR;
Assignee:
Essilor International Cie Generale d'Optique, Creteil, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ; B24B / ;
U.S. Cl.
CPC ...
5128 / ; 51234 ; 5121 / ; 5112 / ; 511312 ;
Abstract
A lens holder device is employed having a bell-shaped chamber, at least a portion of the sidewall of the chamber at an open end thereof having a circular section and adapted to accommodate with radial clearance a lens to be surfaced. A conduit communicates with the chamber and supplies pressurized hydraulic fluid into the chamber. The pressurized hydraulic fluid in the chamber forms a hydraulic cushion for the lens, and a hydraulic film flowing between the peripheral edge of the lens and the sidewall portion, the hydraulic film flowing out of the open end of the chamber.