Drive train for a compressor and a hydraulic pump

Details Drive train for a compressor and a hydraulic pump Drive train for a compressor and a hydraulic pump

2008-09-30

2008-09-30

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With fluid power assist

C180S405000, C180S407000, C180S446000

Reexamination Certificate

active

11859321

ABSTRACT:
A drive train for a compressor and a hydraulic pump of a motor vehicle, and a method of use are described. The system includes a hydraulic power steering system, an electric superimposed steering system for providing steering assistance, and a motor vehicle drive motor with a common output shaft for driving the compressor and the hydraulic pump. Also provided are means for reducing the power which is supplied to the compressor and to the hydraulic pump via the output shaft, when demands made of the compressor and of the steering assistance system permit reduced power operation. The power which is supplied to the compressor and to the hydraulic pump via the output shaft may be reduced substantially to zero when operation of the compressor is unnecessary and the electric superimposed steering system is sufficient to provide alone the steering assistance.

REFERENCES:
patent: 4909343 (1990-03-01), Mouri et al.
patent: 5273129 (1993-12-01), Wright et al.
patent: 6382342 (2002-05-01), Peppler
patent: 0 590 808 (1994-04-01), None
patent: 2 397 138 (2004-07-01), None
patent: WO 96/09464 (1996-03-01), None
International Preliminary Report on Patentability dated Jul. 11, 2007 with English translation and PCT/IPEA/409 (eighteen (18) pages).
International Search Report dated Jun. 7, 2006 (four (4) pages).

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