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:
Jan. 05, 1993
Filed:
Mar. 24, 1992
Roger W Heinig, Cocoa Beach, FL (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A blade root including, in downward order and symmetrical on each side of a center line: an upper neck of width w.sub.2 ; an upper lug having an upper flat bearing surface and a fillet surface of radius R.sub.2, the upper root bearing surface contacting an upper flat groove bearing surface, the groove including a fillet surface of radius R.sub.3, the upper root bearing surface and the upper groove bearing surface contacting over a length l.sub.1 from the beginning point of the upper groove bearing surface to the terminating point of the upper root bearing surface; a lower neck of width w.sub.2 ; and a lower lug having a lower flat root bearing surface and a fillet surface of radius R.sub.6, the lower root bearing surface contacting a lower flat groove bearing surface, the groove including a fillet surface of radius r.sub.7, the lower root bearing surface and the lower groove bearing surface contacting over a length l.sub.2, with the following ratios, w.sub.2 to w.sub.1 about 0.69, R.sub.2 to w.sub.1 about 0.15, R.sub.3 to w.sub.1 about 0.15, R.sub.6 to w.sub.1 about 0.08, R.sub.7 to w.sub.1 about 0.12, l.sub.1 to w.sub.1 about 0.13, and l.sub.2 to w.sub.1 about 0.10.