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. 23, 2010
Filed:
Apr. 04, 2005
Steven Wasser, Wellesley, MA (US);
Clifford Blackburn, Decatur, TN (US);
Steven Wasser, Wellesley, MA (US);
Clifford Blackburn, Decatur, TN (US);
Verne Q. Powell Flutes, Inc., Maynard, MA (US);
Abstract
A musical instrument piston valve receivable in a valve casing. The valve includes a valve stem, a valve barrel connected to the valve stem, and a valve guide slidably disposed with respect to the valve barrel. A spring is disposed in the valve barrel extending between the valve stem and the valve guide. A piston extends from the valve barrel and includes one or more ports. There are also various ways of adjusting the angular orientation of the piston in the valve casing. It is preferred that the piston and the valve barrel are monolithic in construction and the piston valve includes an adjustable valve guide.