US3881746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle leveler system
Assignee: Individual
•
Filing: 1972-12-19
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Granted: 1975-05-06
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Expires: 1992-12-19
Abstract
Abstract A system for leveling vehicles such as those used for family camping employs a plurality of jacks secured to the front and rear bumpers of the vehicle. The jacks are adjustable in length and are pivoted to the front and rear bumpers and have a ground engaging fulcrum portion. When the vehicle is driven against the jacks, it tends to rotate the jacks into a vertical condition around the ground engaging ends of the jacks, and thereby partially lifts the vehicle off its spring suspension an amount corresponding to the height of the jack. To restore the vehicle to its operating condition, it need only be driven in a reverse direction, rotating the jacks out of their vertical condition and restoring the full weight of the vehicle to its spring suspension.
Inventors
- 👤 Jr C Lewis Newcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:26
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
206 words
A leveler system for an over-the-road vehicle having a spring suspended frame comprising, in combination with said vehicle: a plurality of jack devices each having an adjustable length, said jack devices each including a plurality of telescoping members, a lower ground-engaging portion on each said device, said ground engaging portion on the lower of said jack members having an edge for frictionally engaging the ground during rotation of the jack device to the vertical condition, and means for pivotally securing the upper portion of each said jack device to the spring suspended frame of the vehicle adjacent a different corner thereof, said pivot securing means including means attachable to the bumper of the vehicle for suspending the upper of said telescoping members to rotate around a horizontal and vertical axis, so that said vehicle can be partially elevated for leveling various amounts at each corner by driving the jack devices in the direction of movement of said vehicle for rotation of the lengths thereof to a vertical condition with a partial extension of the spring frame of said vehicle, and said vehicle can be restored to normal over-the-road condition by driving said jack devices for rotation of the lengths thereof to be inclined tO the vertical.
Claim 2
Dependent Claim
206 words
A leveler system for an over-the-road vehicle having a spring suspended frame comprising, in combination with said vehicle: a plurality of jack devices each having an adjustable length, said jack devices each including a plurality of telescoping members, a lower ground-engaging portion on each said device, said ground engaging portion on the lower of said jack members having an edge for frictionally engaging the ground during rotation of the jack device to the vertical condition, and means for pivotally securing the upper portion of each said jack device to the spring suspended frame of the vehicle adjacent a different corner thereof, said pivot securing means including means attachable to the bumper of the vehicle for suspending the upper of said telescoping members to rotate around a horizontal and vertical axis, so that said vehicle can be partially elevated for leveling various amounts at each corner by driving the jack devices in the direction of movement of said vehicle for rotation of the lengths thereof to a vertical condition with a partial extension of the spring frame of said vehicle, and said vehicle can be restored to normal over-the-road condition by driving said jack devices for rotation of the lengths thereof to be inclined tO the vertical.
Claim 3
Dependent Claim
30 words
A leveler system for over-the-road vehicles as recited in claim 1 wherein bumper attachable means includes a vertical swivel connecting means for rotating said jack device about a vertical axis.
Claim 4
Dependent Claim
194 words
A leveler system for over-the-road vehicles having a spring suspended frame comprising: a jack device having an adjustable length, a lower ground-engaging portion on said device having an edge for frictionally engaging the ground during rotation of the jack device to the vertical condition, and means for pivotally securing the upper portion of said jack device to the spring suspended frame of the vehicle, so that with a plurality of said jack devices at different corners of the vehicle, the latter can be partially elevated for leveling various amounts at each corner by driving the jack devices in the direction of movement of said vehicle to rotate said jack devices with their lengths in a vertical condition with a partial extension of the spring frame of said vehicle, and can be restored to normal over-the-road condition by driving said jack devices for rotation of the lengths thereof to be inclined to the vertical; said securing means including means attachable to the vehicle''s bumper for suspending the upper of said telescoping members to rotate around a vertical and horizontal axis so that when not in use said jack device can be stored along said bumper.
Claim 5
Dependent Claim
194 words
A leveler system for over-the-road vehicles having a spring suspended frame comprising: a jack device having an adjustable length, a lower ground-engaging portion on said device having an edge for frictionally engaging the ground during rotation of the jack device to the vertical condition, and means for pivotally securing the upper portion of said jack device to the spring suspended frame of the vehicle, so that with a plurality of said jack devices at different corners of the vehicle, the latter can be partially elevated for leveling various amounts at each corner by driving the jack devices in the direction of movement of said vehicle to rotate said jack devices with their lengths in a vertical condition with a partial extension of the spring frame of said vehicle, and can be restored to normal over-the-road condition by driving said jack devices for rotation of the lengths thereof to be inclined to the vertical; said securing means including means attachable to the vehicle''s bumper for suspending the upper of said telescoping members to rotate around a vertical and horizontal axis so that when not in use said jack device can be stored along said bumper.
Claim 6
Dependent Claim
30 words
A leveler system for over-the-road vehicles as recited in claim 3, wherein bumper attachable means includes a vertical swivel connecting means for rotating said jack device about said vertical axis.
Claim 7
Dependent Claim
19 words
A leveler system for over-the-road vehicles as recited in claim 4 and comprising a plurality of said jack devices.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |