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 Title: |
US5143386:
Automatic leveling system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Uriarte, Jorge; Irvine, CA 92714
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| Assignee: |
None
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| Published / Filed: |
1992-09-01
/ 1990-11-28
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| Application Number: |
US1990000618940
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| IPC Code: |
Advanced:
B60S 9/02;
Core:
B60S 9/00;
IPC-7:
B60S 9/00;
B62D 37/00;
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| U.S. Class: |
Current:
254/418;
180/041;
254/423;
280/DIG.001;
Original:
280/006.1;
280/006.12;
280/707;
280/DIG.1;
180/041;
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| Field of Search: |
280/840,6.1,6.12,707,DIG. 1
180/041
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| Priority Number: |
| 1990-11-28 |
US1990000618940 |
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| Abstract: |
A system for automatically leveling a vehicle, such as a recreational vehicle installed with a plurality of extensible jacks and disposed at strategic positions on the vehicle underside, and responsive to an automatic level control electronics to extend simultaneously all of the jacks and at different speeds as determined by the angle of vehicle versus gravity and bring vehicle to a level condition. The jacks are stopped when they are use higher current than that used before the jacks contact the ground, to assure ground contact, and the vehicle is level.
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| Attorney, Agent or Firm: |
Miller, Alfred E. ;
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| Primary / Asst. Examiners: |
Rice, Kenneth R.;
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 22 claims |
What is claimed is:
1. In an apparatus for leveling a vehicle, including a plurality of jacks mounted at different locations to the vehicle, and control means for selectively controlling said jacks to extend and contract, the improvement wherein said control means comprises a level sensor for providing output signals corresponding to the degree of tilt of separate axes extending between said jacks, and means responsive to separate ones of said output signals for energizing separate said jacks to extend or contract independently of one another, where a plurality of said jacks may be energized simultaneously, thereby increasing the speed of leveling of said vehicle.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 32 U.S. patent(s) that reference this one
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