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US 2003/0116735 A1Published application
Self-contained hydraulic dampening for a solenoid operated spool valve
AssigneeEaton Corporation
InventorsRobert A. Dayton, Don W. Hines, George Kasper
Life of this patent
Estimating the term…
Abstract
A reservoir is provided for a hydraulic dampening chamber at the end of a spool valve with a snap on cap having a labyrinth or baffled fluid entry passage formed in the closed end of the cap.
Claims12
A method of providing a fluid reservoir for a hydraulic dampening chamber in a valve comprising:
- (a) forming a cup-shaped member with baffled passages through the closed end of the cup shape;
- and,
- (b) disposing the rim of the cup-shaped member over the dampening chamber of the valve and retaining the cup-shaped member thereover and restricting communication to said chamber through the baffled passages.
In combination a valve having a hydraulic dampening chamber for connection to a fluid source and a fluid reservoir therefor comprising:
- (a) a generally cup-shaped member having the side wall of the cup shape attached to the dampening chamber of the valve with the closed end portion of the cup-shaped member extending across the inlet port;
- (b) said closed end of said cup-shape having a baffled passage therethrough providing exclusive communication with the dampening chamber from the exterior thereof, wherein upon connection of the valve to a source of pressurized fluid and termination of fluid flow therefrom, fluid is trapped in said chamber by said baffled passage thereby providing a reservoir of fluid for said chamber.
Dependencies are inferred from the claim text.