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:
Sep. 12, 1989
Filed:
Nov. 13, 1987
Colin Rodgers, San Diego, CA (US);
Roy W Vershure, Jr, Escondido, CA (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
Weight and spatial concerns in aircraft are alleviated or minimized through a combined auxiliary and emergency power unit including a gear box 10 adapted to drive a generator 16 and a hydraulic pump 18 as auxiliary to emergency power supplies for the aircraft. The system includes a pair of turbine wheels 22 and 24 along with a pair of motion transmitting paths 12, 26, 42; 14, 68, each including a selectively operable clutch 42, 68 so as to connect the turbine wheels 22, 24 to the gear box 10 in mechanical parallel. A rotary compressor 28 is connected to one of the turbine wheels 22 and an associated combustor 46 provides combustion gas to the turbine wheel 22 for auxiliary power unit operation. A pressure tank 56 for compressed oxidant and an additional combustor 60 are utilized to provide combustion gas to the other turbine wheel 24 in an emergency power unit mode of operation.