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:
Jul. 16, 1991
Filed:
Oct. 01, 1990
Applicant:
Inventor:
John H Sadler, Derby, GB;
Assignee:
Rolls-Royce, plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K / ;
U.S. Cl.
CPC ...
2988921 ; 2988922 ; 29428 ; 29505 ; 228112 ; 228115 ;
Abstract
A compressor rotor structure for a gas turbine engine is made by linear friction bonding stub rooted blades and separate platform pieces, to lands between slots in a compressor disc periphery. These results an integral structure in which the periphery of the disc has had metal removed so as to form the slots and the disc is thus lightened, and the stub roots and platform pieces cooperate to form the airflow inner annulus wall.