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. 22, 2011
Filed:
Dec. 03, 2004
Applicants:
Pieter Groth, Göteborg, SE;
Hans Mårtensson, Trollhättan, SE;
Inventors:
Pieter Groth, Göteborg, SE;
Hans Mårtensson, Trollhättan, SE;
Assignee:
Volvo Aero Corporation, Trollhattan, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a blade intended to be exposed to a gas flow at high speed during operation of a flow machine comprising the blade, the blade includes a front end designed to face towards the incoming gas flow and a rear end. The front end is provided with a concave area that is such that during operation a stagnation point for the incoming gas flow arises at a distance in front of an outer blade surface that defines the concave area and such that the outer blade surface is thereby at least partially protected from the incoming gas flow.