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:
Feb. 21, 1995
Filed:
Oct. 13, 1993
Anthony L Pratt, Bristol, GB;
Rolls-Royce plc, London, GB;
Abstract
A method of making a bladed disc assembly, of a kind used, for example, in the turbine or compressor sections of a gas turbine engine, includes forming a peripheral groove in the rim of the disc, positioning a plurality of bladed segments around the disc, each segment preferably including two or more blades extending radially from a root portion, each segment having its root portion located in the groove, securing the root portions in the groove by means of electron beam welding to form circumferential seam welds at either side of the root portions and axial seam welds between the root portions of adjacent segments thereby forming a vacuum seal, and diffusion bonding the root portions and the rim of the disc by means of isostatic hot gas pressure bonding.