Leveling sensor/switch W/hydraulic control valve for vehicle...

Details Leveling sensor/switch W/hydraulic control valve for vehicle... Leveling sensor/switch W/hydraulic control valve for vehicle...

2006-02-21

2006-02-21

Dunn, David R. (Department: 3616)

Land vehicles

Body elevation or tilt

Static site leveling

Reexamination Certificate

active

07000927

ABSTRACT:
This invention consists of a Level Sensing Device and Hydraulic Control Valve, which, when, as a team, is applied to a system with a Hydraulic Pump W/Oil Reservoir, three or four Hydraulic Jacks, three or four Normally-Open Solenoid-Operated In-Line Hydraulic Valves, and piped and wired as described in this document, will provide a completely automatic leveling system for Recreational Vehicles, such as, Motorhomes, Pick-up Campers, and Camping Trailers. This Leveling Sensor/Switch and Hydraulic Control Valve can also be retro-fit into any exsisting manually-operated or semi-automatic hydraulic leveling system and, as a team, make it a completely automatic leveling system.

REFERENCES:
patent: 3761653 (1973-09-01), Eranosian
patent: 3836161 (1974-09-01), Buhl
patent: 3917307 (1975-11-01), Shoebridge
patent: 4099040 (1978-07-01), Bitko
patent: 4746133 (1988-05-01), Hanser et al.
patent: 5890721 (1999-04-01), Schneider et al.
patent: 6050573 (2000-04-01), Kunz
patent: 6684138 (2004-01-01), Friede et al.

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