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:
Mar. 27, 1979
Filed:
Oct. 26, 1977
Applicant:
Inventor:
Paul Koeller, Dorval, CA;
Assignee:
Dominion Engineering Works Limited, Lachine, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
415116 ; 415119 ; 60696 ;
Abstract
Hydraulic turbo machines are provided with air admitting and inducing arrangements in the draft tube, below the runner. This permits the admission of air in flow stabilizing relation, particularly at partial loads so as to diminish noise, vibration and cavitation, and to stabilize machine operation.