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:
Oct. 30, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventors:
David G Holmes, Schenectady, NY (US);
Richard A Novak, Boston, MA (US);
Jacques Y McNabb, Beaconsfield, CA;
Assignee:
Dominion Engineering Works Limited, Lachine, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
4161 / ;
Abstract
An improved Francis-type turbine runner permitting a significant reduction in cavitation is provided by shaping the runners extending between the ring and crown in such a fashion that at least a portion of the area of the streamlined suction face side of each blade is (when used as a turbine) exposed when viewed in the axial direction looking away from the crown.
Holmes, David. (1984). Blade configurations for francis-type turbine runners (U.S. Patent No. 4479757). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4479757
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile