Musical instrument piston valve
AssigneeVerne Q. Powell Flutes, Inc.
InventorsSteven Wasser, Clifford Blackburn
Life of this patent
Estimating the term…
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.
Claims56
A musical instrument piston valve receivable in a valve casing, the valve comprising:
- a valve stem;
- a valve barrel connected to the valve stem;
- a valve guide slidably disposed with respect to the valve barrel;
- a spring in the valve barrel extending between the valve stem and the valve guide;
- a piston extending from the valve barrel and including one or more ports;
- and
- means for adjusting the angular orientation of the piston in the valve casing.
A musical instrument piston valve comprising:
- a valve barrel;
- and
- a piston extending from the valve barrel including one or more ports,
- the piston and valve head monolithic in construction and machined from one piece of stock material.
An adjustable valve guide for a musical instrument piston valve, the valve guide comprising:
- at least one casing key extending from the valve guide for setting the radial orientation of the piston in the valve casing and at least one extending stop member for setting the longitudinal orientation of the piston in the valve casing;
- and
- means for adjusting the casing key adjustable relative to the stop member.
A method of making a musical instrument piston valve, the method comprising:
- machining cylindrical tube stock to define a valve barrel and a piston including one or more ports resulting in a monolithic one piece valve barrel/piston assembly with the ports correctly aligned with respect to the valve head.
Dependencies are inferred from the claim text.