Incline-responsive valve
AssigneeParker-Hannifin Corporation
InventorPeter Sabin Costin
Life of this patent
Estimating the term…
Abstract
A valve (100) includes a valve body (300), a spool assembly (600), and a pendulum assembly (700). The valve body (300) is adapted for fixed attachment to a mounting surface (260) having an orientation corresponding to the incline of a supporting surface (210. The spool assembly (600) comprises a spool (610) pivotally mounted within the valve body (300), and the pendulum assembly (700) pivots the spool (610) in gravitational response to the orientation of the valve body (300). The valve body (300), the spool assembly (600), and/or the pendulum assembly (700) include one or more elements for adjusting flow symmetry between the LIO flowpaths and the GIO flowpaths.
Claims20
A valve responsive to the incline of a supporting surface, said valve comprising:
- a valve body adapted for fixed attachment to a mounting surface having an orientation corresponding to the incline of the supporting surface, whereby the valve body assumes an orientation corresponding to the incline;
- a spool assembly comprising a spool pivotally mounted relative to the valve body;
- a pendulum assembly pivoting the spool in gravitational response to the orientation of the valve body to thereby situate the spool relative to the valve body among an IO position, sequential LIO positions whereat the valve body and the spool define enlarging LIO flowpaths, and sequential GIO positions whereat the valve body and the spool define enlarging GIO flowpaths;
- wherein at least one of the valve body, the spool assembly, and the pendulum assembly includes means for adjusting flow symmetry between the LIO flowpaths and the GIO flowpaths.
Dependencies are inferred from the claim text.