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:
Oct. 11, 1977
Filed:
Apr. 02, 1976
Applicant:
Inventor:
Charles W Christensen, Cedar Rapids, IA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F26B / ;
U.S. Cl.
CPC ...
34242 ; 432242 ;
Abstract
An air seal having a flexible annular seal which fits around a cylindrical rotatable member and a flexible marginal portion which slidably interfits within an opening into a substantially closed chamber whereby both rotation and pivotal movement of the member is permitted without allowing flow of an substantial amount of air between the member and chamber.
Christensen, Charles. (1977). Rotary drum plenum seal (U.S. Patent No. 4052797). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4052797
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile