Pumps – Motor driven – Magnetostrictive chamber
Patent
1986-09-08
1989-02-14
Stout, Donald E.
Pumps
Motor driven
Magnetostrictive chamber
417417, 310 26, F04B 1700, F04B 3500
Patent
active
048043141
ABSTRACT:
A magnetostrictive hydraulic injector pump having a cylinder closed at one end with an elongated piston arranged within the cylinder from the other end. The piston is constructed of a magnetostrictive material which increases in length in the presence of a magnetic field of appropriate intensity. It is wound along its length with a coil of wire capable of producing an electro-magnetic field. The piston includes an intake passage communicating with a fluid supply. The piston is fastened at the open end of the cylinder to define a cylinder cavity between the cylinder closed end and the piston. An injector passage including a valve, communicates with this cavity to the exterior. The volume of this cavity is reduced when the piston expands under the influence of the magnetic field created by the coil to produce a pressure on any fluid contained within said cavity to force it out the injector passage.
In a preferred embodiment the cylinder is constructed of a negative magnetostrictive material which contracts in length in the presence of a magnetic field. Thus, upon the energization of the coil the cylinder shrinkage and the pistons expansion double the relative movement of the piston face to increase the volume displacement of the pump.
REFERENCES:
patent: 1092453 (1914-04-01), Rainey
patent: 2772862 (1956-12-01), Van Suchtelen
patent: 2776417 (1957-01-01), Harris
patent: 2842067 (1958-07-01), Stevens
patent: 3175132 (1965-03-01), Salter
patent: 3194162 (1965-07-01), Williams
patent: 3349304 (1967-10-01), Wachter
patent: 3391680 (1968-07-01), Benson
patent: 4096735 (1978-06-01), Huntzinger et al.
GTE Valeron Corporation
Koris David J.
Stout Donald E.
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