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. 11, 2003
Filed:
Jan. 17, 2002
David L. Daggett, Snohomish, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A gas turbine jet engine having a channel in a turbine casing through which a quantity of compressed air from a pressurized air source is introduced to start the gas turbine jet engine. The compressed air is expanded and accelerated by a series of diffusers and then impinges upon at least one impulse-type turbine bucket member located on the tip of a turbine blade to drive the turbine, which drives a compressor to start engine. Alternatively, the channel in the casing is located close to an axial compressor in a gas turbine engine's forward section and drives at least one turbine bucket member on a shrouded integrated compressor/turbine blade to drive the compressor to start the gas jet turbine engine.