Raimond E Immelman

US Patent:

20100166587, Jul 1, 2010

Filed:

Dec 29, 2008

Appl. No.:

12/345159

Inventors:

Raimond Emile Immelman - Phoenix AZ, US

Assignee:

STEWART PHILLIP INTERNATIONAL LLC - Phoenix AZ

International Classification:

F04B 53/12

US Classification:

417552

Abstract:

A gravity-assisted fluid pump includes a fluid reservoir, a piston, a valve element, a piston operator, and a valve operator. The piston is movably disposed within the fluid reservoir and is movable between an uppermost position and a lowermost position. The valve element is movable between a closed position and an open position. The piston operator moves the piston between the uppermost position and the lowermost position. The valve operator selectively moves the valve element between the closed position and an open position.