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:
Aug. 21, 1979
Filed:
Jun. 13, 1977
Applicant:
Inventors:
Howard P Aldrich, Rancho Palos Verdes, CA (US);
Glenn A Burgess, Downey, CA (US);
Clarence T Yamanaka, Carson, CA (US);
Assignee:
The Garrett Corporation, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B64D / ;
U.S. Cl.
CPC ...
98-15 ;
Abstract
A cabin pressure control system has two independent controllers, one of which is the primary controller and the other the standby controller taking control in case of primary controller malfunction. The controllers switch roles automatically each flight. An annunciating system indicates the identity of the primary controller on the previous flight and maintains the designation in case of malfunction so that a defective unit may be readily identified.