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:
Feb. 20, 2007
Filed:
Oct. 05, 2004
William F. Turnau, Iii, Canton, MI (US);
Steven J. Tokarz, Canton, MI (US);
Jack E. Elder, Rochester, MI (US);
Scott K. Wilson, Rochester Hills, MI (US);
William F. Turnau, III, Canton, MI (US);
Steven J. Tokarz, Canton, MI (US);
Jack E. Elder, Rochester, MI (US);
Scott K. Wilson, Rochester Hills, MI (US);
Brass-Craft Manufacturing Company, Novi, MI (US);
Abstract
A valve stem construction for a manipulable valve member used to control fluid flow through a valve. The valve stem extends externally of the valve housing for engagement by a valve handle used to manipulate the valve member between open and closed positions. The valve is formed with a plurality of circumferentially spaced concave splines extending longitudinally on the outer surface of the valve stem. The splines are spaced so as to maximize transmission of rotational torque while minimizing flexure and twisting of the valve stem. The spacing and configuration of the individual splines also ensure a strong mating fit with the valve handle.