US 4,295,538 AGranted

Auxiliary power system for automotive vehicle

OwnerAlexander J. Lewusinventor

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Abstract

A suspension and auxiliary power system for a vehicle having a frame, a power consuming load on said frame, and at least one supporting wheel which is adapted to move vertically relative to the frame. The system includes a fluid pump connected between the frame and the wheel and including a piston which is reciprocated in response to relative movement between the frame and wheel to contract or expand a fluid chamber. A fluid circuit connected to the pump includes a uni-directional fluid motor which drives a power consuming load. The fluid circuit is connected to the fluid chamber of the pump and includes a check valve for permitting fluid to flow only from the chamber directly to the motor. A second check valve in the circuit regulates flow so that fluid is directed only from a source of fluid to the chamber. The fluid pump acts as a hydraulic suspension system supporting at least a part of the vehicle weight whereby loading of the motor causes the motor to serve as a shock absorber for the pump.

Claims5

Dependent claims

A suspension and auxiliary power system for a vehicle having a frame, a power consuming load on said frame, and at least one supporting wheel adapted to move vertically relative to said frame, said system comprising:

a fluid pump including a housing adapted to be connected to one of said frame and said wheel and a reciprocal piston adapted to be connected to the other of said frame and said wheel, said housing and piston forming at least one fluid pumping chamber whose volume is expanded and contracted by vertical movement between said frame and said wheel;
a uni-directional fluid motor;
said motor adapted to drive said power consuming load;
and fluid circuit means connecting said chamber to said motor said circuit means including a first check valve for directing fluid only from said chamber directly to said motor and a second check valve for directing fluid only from a source of fluid to said chamber, whereby said pump acts as a fluid suspension system, supporting at least a part of the weight of said vehicle on said one wheel, and whereby the loading on said motor of said power consuming load causes said motor to act as a shock absorber to said pump.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 06/076,081Filed 17 Sep 1979 · continuation
Priority: 21 Mar 1974
Granted: 20 Oct 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B60G 13/14
Resilient suspensions characterised by arrangement, location or type of vibration dampers: having dampers accumulating utilisable energy, e.g.…
B60K 25/10
Auxiliary drives: directly from oscillating movements due to vehicle running motion, e.g. suspension movement
B60K 2025/026
Directly from an engine shaft: by a hydraulic transmission
B60G
Vehicle suspension arrangements

Family

Serial453,293Parent of this continuation-in-part · filed 21 Mar 1974
Serial633,825Parent of this continuation · filed 20 Nov 1975
Serial812,528Parent of this continuation · filed 5 Jul 1977
Serial926,373Parent of this continuation · filed 20 Jul 1978
3921746Parent of this continuation-in-part
US 4,295,538 AThis patent

From the US filing history. Foreign family members aren’t listed.