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:
Dec. 06, 2005
Filed:
Mar. 05, 2004
Applicants:
Anthony B. Phipps, Uttoxter, GB;
Lynne Turner, Bristol, GB;
Inventors:
Anthony B. Phipps, Uttoxter, GB;
Lynne Turner, Bristol, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D005/08 ;
U.S. Cl.
CPC ...
Abstract
A gas turbine engine turbine section includes a turbine disk () which carries a stage of turbine blades (). The turbine blades () have fir tree roots () which locate in fir tree grooves () in the rim of disk. Some of the projections that form the fir tree roots () of blades () and fir tree grooves () of disk () are truncated so as to define spaces between their truncated surfaces and the roots between adjacent overlapping projections, thus enabling the passing of a cooling air flow therethrough.