Power unit housing a pump

Details Power unit housing a pump Power unit housing a pump

1996-06-07

1998-06-30

Thorpe, Timothy

Pumps

Combined

F04B 2302

Patent

active

057724083

ABSTRACT:
A power unit housing a pump, comprising: a hydraulic oil tank having an approximately L-shaped configuration and including a pump housing portion which houses a hydraulic pump and an oil reservoir portion which is integrally formed with and arranged approximately perpendicular to the pump housing portion; an electric motor juxtaposed alongside the oil reservoir portion, the electrical motor operating the hydraulic pump through a direct coupling; and a switching valve for switching the supply and discharge flow of the hydraulic oil between the hydraulic pump and an external load, the switching valve is positioned in proximity to the electric motor. According to this arrangement it is possible to shorten the axial length of the hydraulic oil tank while maintaining the volume of the tank and it is possible to make the entire unit compact.

REFERENCES:
patent: 3982856 (1976-09-01), Hehl
patent: 4057368 (1977-11-01), Balling
patent: 4325678 (1982-04-01), Kanamaru et al.
patent: 4704747 (1987-11-01), Brubakken et al.
patent: 5104294 (1992-04-01), Banba
patent: 5306421 (1994-04-01), Weinstein
patent: 5310481 (1994-05-01), Rondano
patent: 5378119 (1995-01-01), Goertzen
patent: 5695259 (1997-12-01), Isshiki et al.
Northern Fall/Winter Catalog, PO Box 1499, Burnsville MN 55337-0499, p. 85 (L-shaped tanks), 1997.

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