Pumps – Motor driven – Fluid motor
Patent
1982-04-29
1984-06-26
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
417469, 91306, 91307, F04B 1902
Patent
active
044564384
ABSTRACT:
The invention concerns an extrusion device for impregnating rock formations preferably for bonding with a liquid synthetic product, with the use of a piston pump having at least one working cylinder. During the induction or suction stroke a working piston is filled with the extrusion liquid or with one of its components, and is emptied during the delivery stroke cycle. The working piston is controlled by a pump drive equipped with at least one driving cylinder and a driving piston which can be pressurized on both sides of the piston sequentially. A control valve pressurizes the piston surface with a working fluid as the other working surface of the piston is relieved. The extrusion device, can operate with more efficient utilization of the energy source applied and in particular with extremely high operating pressure of the available hydraulic medium, which is already available but used for other purposes, i.e., the operation of the rams or the hydraulic face- and/or roadway supports.
REFERENCES:
patent: 1835834 (1931-12-01), Wolfe
patent: 2667841 (1954-02-01), Meader
patent: 3846049 (1974-11-01), Douglas
patent: 4123204 (1978-10-01), Scholle
patent: 4173435 (1979-11-01), Hammelmann
Fischbach Manfred
Hebben Rolf
Smith Leonard E.
VanOphem Remy J.
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