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US 6,022,201 AGranted
Hydraulic vane pump with flexible band control
AssigneeKasmer Hydristor Corporation
InventorThomas E. Kasmer
Life of this patent
Estimating the term…
Abstract
A variable pump or motor is providing including a housing with inlet and outlet ports and a vaned rotor, the vanes being extensible against a shape controlled freely rotatable flexible band within the housing.
Claims11
A fluid flow apparatus comprising:
- a housing including an outer casing with a longitudinal axis and a pair of end plates enclosing the outer casing, a rotor with a plurality of radially extensible vanes within said housing, and means supporting the rotor for rotation about said longitudinal axis relative to the outer casing,
- a flexible band within said housing surrounding said rotor and in contact with an outer portion of each of said extensible vanes creating a fluid chamber;
- a plurality of individually controlled shape means abutting said flexible band and spaced around the circumference of said outer casing for controlling the shape of said flexible band;
- at least two pairs of passageways in communication with said fluid chamber, each pair of said passageways extending through one of said end plates;
- and
- said rotor and said extensible vanes upon rotation about said longitudinal axis results in differential fluid flow between said two pairs of said passageways according to a selected shape of said flexible band.
3 more elements
A method of improving efficiency in a fluid flow device, said device comprising:
- a housing including an outer casing with a longitudinal axis and a pair of end plates enclosing the outer casing, a rotor with a plurality of radially extensible vanes within said housing, and means supporting the rotor for rotation about said longitudinal axis relative to the outer casing,
- a flexible band within said housing surrounding said rotor and in contact with an outer portion of each of said extensible vanes, creating a fluid chamber;
- a plurality of individually controlled shape means abutting said flexible band and spaced around the circumference of said outer casing for controlling the shape of said flexible band;
- at least two pairs of passageways in communication with said fluid chamber, each pair of said passageways extending through one of said endplates;
- including the steps of:
- configuring a shape of said flexible band by adjusting said shape control means, and
- rotating said rotor and extensible vanes about said longitudinal axis;
- whereby differential fluid flow between said two pairs of said passageways is provided according to a selected shape of said flexible band.
5 more elements
Dependencies are inferred from the claim text.