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. 22, 1980
Filed:
Mar. 24, 1978
Applicant:
Inventors:
August DeFazio, Englishtown, NJ (US);
Melvin E Kamen, Woodcliff Lake, NJ (US);
Assignee:
Revlon, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
51235 ; 5121 / ; 269 21 ;
Abstract
A vacuum chuck for use in lens grinding having a vertical bore extending downwardly into the block to join a through horizontal bore provided with a venturi, so that by blowing air through the venturi a vacuum is created in the vertical bore to secure the lens placed on top of the block.