Radial piston pump with eccentrically driven rolling...

Details Radial piston pump with eccentrically driven rolling... Radial piston pump with eccentrically driven rolling...

2006-11-14

2006-11-14

Stashick, Anthony D. (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

C417S521000, C417S440000, C417S307000

Reexamination Certificate

active

07134846

ABSTRACT:
An hydraulic head features two or three individual radial pumping pistons and associated pumping chambers, annularly spaced around a cavity in the head where an eccentric drive member with associated outer rolling actuation ring are situated, whereby a rolling interaction is provided between the actuating ring and the inner ends of the pistons for intermittent actuation, and a sliding interaction is provided between the actuation ring and the drive member. The respective inlet and outlet valve trains are also situated in the head, and the head is attachable to an application and/or customer specific mounting plate. The outside diameter of the rolling element is barrel shaped, to compensate for any misalignment of the pistons relative to the drive shaft due, for example, to either tolerance stack up or deflection.

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