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:
Nov. 05, 1985
Filed:
Mar. 19, 1984
David J Callahan, Glastonbury, CT (US);
Robert S Mazzawy, Glastonbury, CT (US);
Howard Y Stryker, Glastonbury, CT (US);
James B Kelly, Lake Worth, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A surge prevention system for a fan jet engine of an aircraft serves to manifest a signal whenever pressure distortions at the engine's inlet is calculated by judiciously located total pressure probes mounted downstream of the fan on the fan struts in the fan discharge duct. The engine's bleed valve is automatically opened to prevent surge and the fuel control's speed sensor is automatically reset to compensate for any loss of thrust. Safety switches are included to render the system inoperative whenever the aircraft is in the margin of stall and the reset feature is rendered inoperative for normal bleed open operating conditions.