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:
Apr. 27, 1999
Filed:
Jun. 13, 1997
James R Beyer, York, PA (US);
Richard K Fisher, Jr, Jacobus, PA (US);
Voith Hydro, Inc., York, PA (US);
Abstract
A method of making a reaction turbine blade for enhancing the level of dissolved gas in water passing through a turbine. The method includes the steps of machining a blank to have an overall blade profile and control points, and fixedly securing a perimeter of a plate to a region of the blank. The plate has a region spaced from the blank to form a gas channel leading from an inner edge of the blank to an outer edge of the blank. The partially formed blade comprising the blade profile and attached plate is then formed into the shape of a hydrofoil having a curved pressure surface and a curved gas channel. A shallow groove may be formed on one of the suction surface and the pressure surface leading from the inner edge toward the outer edge, with the plate secured to the blank overlying the shallow groove. Alternatively, the plate may have a concave surface facing the blank and spaced from the blank, with a perimeter of the plate secured to the blank to form a gas channel leading from the inner edge toward the outer edge.