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:
May. 16, 1989
Filed:
Feb. 08, 1988
Applicant:
Inventor:
Phiroze Bandukwalla, Olean, NY (US);
Assignee:
Dresser-Rand Company, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
416 95 ; 416174 ; 4161 / ; 4151737 ; 4151744 ;
Abstract
A spiral groove machined in the end face of a turbine rotor disc accelerates boundary layer fluid flow from the interior of the turbine rotor to the compression chamber. This flow cools the rotor disc and vanes. A transverse axial passageway may be provided beneath the vane roots. Radial extensions from this transverse passageway act to divert cool air through the rotor vanes. Abradable rings may be provided to the stator assemblies adjacent the spiral grooves which act to minimize wear between the sharp edges of the spiral grooves and the stator assemblies.