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:
Apr. 10, 1984
Filed:
May. 13, 1982
Applicant:
Inventors:
Claude P Rotondo, Middletown, CT (US);
John D Robinson, Jr, Tolland, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02C / ;
U.S. Cl.
CPC ...
60 3908 ; 184-611 ;
Abstract
A gas turbine engine has a bearing compartment with seals for confining the oil in a compartment and with compressor discharge pressure supplied to the seals externally of the compartment and in which a restrictive valve controlling the compartment vent is actuated by compressor discharge pressure to be opened in response to a drop in this pressure.