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. 15, 1980
Filed:
Jul. 28, 1978
Applicant:
Inventor:
John K Daly, Scottsdale, AZ (US);
Assignee:
Advanced Simiconductor Materials/America, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
279-3 ; 51235 ; 269 21 ;
Abstract
A vacuum-chuck having no expensive, complex rotary unions in the vacuum lines maintains its vacuum by maintaining the surfaces which rotate with respect to each other in intimate contact with a glabrous, self-lubricating element. The vacuum is communicated to said revolving surfaces through openings in said element.
Daly, John. (1980). Rotary vacuum-chuck using no rotary union (U.S. Patent No. 4183545). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4183545
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile