F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/28
F04B 5/00 (2006.01) F04B 9/107 (2006.01) F04B 9/117 (2006.01)
Patent
CA 1272069
APPARATUS FOR AND METHOD OF PUMPING OUTPUT FLUIDS SUCH AS ABRASIVE LIQUIDS Abstract of the Disclosure A technique for pumping an output fluid, especially a particle-laden abrasive liquid, is disclosed herein. This technique utilizes an output pump and a drive pump which are interconnected through a common chamber containing a drive fluid, specifically water. The output pump includes an output piston within its own pumping chamber for pumping the output liquid by causing the output piston to move through a complete forward stroke. The drive pump includes a drive piston within its own chamber and means for causing the output piston to move means for moving the drive piston through its own complete forward stroke. This pressurizes the drive fluid within the common chamber in a way which causes the output piston to move in the forward direction of its stroke. The two pumps are configured such that the forward stroke of the drive piston defines a greater swept volume than the forward stroke of the output piston, thereby to ensure that the output piston will always move through its entire forward stroke before the drive piston. At the same time, means are provided for continuously replenishing the drive fluid with discrete amounts of cooler drive fluid in order to ensure that the temperature of the overall drive fluid remains at an acceptable low level.
563488
Harold Paul D.
Mcdonald Michael M.
Reichman James M.
Sisson Steven S.
Tower Timothy M.
Flowdril Corporation
Harold Paul D.
Mcdonald Michael M.
Reichman James M.
Sisson Steven S.
LandOfFree
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