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:
Aug. 10, 1976
Filed:
Oct. 28, 1975
Duane E Doll, York, PA (US);
Douglas H Baker, York, PA (US);
Allis-Chalmers Corporation, Milwaukee, WI (US);
Abstract
A hydraulic turbine is disclosed having wicket gate vanes which are rotatable between extreme positions to interrupt and permit the flow of water through a substantially cylindrical water passageway. In order to effectively block the flow of water through the passageway, the outer peripheral surface of the vanes must have a spherical configuration to match the circular cross-section of the cylindrical passageway. However, with this configuration, when the vanes are in an open position, a vee-shaped space is defined between the ends of the vanes and the water passageway. Baffles are provided to fill this space so that debris cannot collect therein.