Patent CA585377A successfully refreshed from Google Patents.
Patent US3933372A successfully refreshed from Google Patents.
US3933372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer stabilizer
Assignee: Individual
•
Filing: 1974-03-27
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Granted: 1976-01-20
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Expires: 1994-03-27
Abstract
Abstract A pair of extensible leveling and stabilizing legs are connected pivotally to the underside of a trailer, the legs can be raised from their ground engaging position extending downward to the ground in an outward direction transverse to the longitudinal axis of the trailer, to a retracted position extending parallel to the underside of the trailer. Force means are provided which tend to move the legs toward each other and thus continuously maintain stabilizing and leveling contact of the ground engaging portion of the legs with the ground. The force means can also be used to maintain the legs in a raised and retracted position.
Inventors
- 👤 Robert R. Herndon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:12
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/02; B60P; B60P3/00; B60P3/32; B60P3/36; B60S9/04; B62; B62D; B62D37/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
207 words
A stabilizing and leveling support assembly for trailers, comprising: a. a pair of extensible leg assemblies, b. means for attaching one end of said leg assemblies to the underside of a trailer, one leg assembly adjacent each lateral side of the trailer with said leg assemblies being secured by said attaching means for pivotal movement of said leg assemblies between an operative position extending downward and outward from the trailer and a raised position extending outward from the trailer and generally adjacent to the underside of the trailer, c. an elongate member of adjustable length with one end of said elongate member having a spring attached axially thereto with the other end of said spring being pivotally connected to one of said leg assemblies, and with the other end of said elongate member pivotally connected to the other leg assembly, d. means for adjusting the length of said elongate member thereby applying a force to said leg assemblies in a direction transverse to the trailer and towards or away from each other, said force tending to move the respective leg assemblies towards each other when the length of said elongate member is shortened and away from each other with the length of said elongate member is lengthened.
Claim 2
Dependent Claim
207 words
A stabilizing and leveling support assembly for trailers, comprising: a. a pair of extensible leg assemblies, b. means for attaching one end of said leg assemblies to the underside of a trailer, one leg assembly adjacent each lateral side of the trailer with said leg assemblies being secured by said attaching means for pivotal movement of said leg assemblies between an operative position extending downward and outward from the trailer and a raised position extending outward from the trailer and generally adjacent to the underside of the trailer, c. an elongate member of adjustable length with one end of said elongate member having a spring attached axially thereto with the other end of said spring being pivotally connected to one of said leg assemblies, and with the other end of said elongate member pivotally connected to the other leg assembly, d. means for adjusting the length of said elongate member thereby applying a force to said leg assemblies in a direction transverse to the trailer and towards or away from each other, said force tending to move the respective leg assemblies towards each other when the length of said elongate member is shortened and away from each other with the length of said elongate member is lengthened.
Claim 3
Dependent Claim
32 words
A stabilizing and leveling support assembly for trailers as claimed in claim 1 wherein the elongate member comprises two elongate sections with one section being received in the other for telescopic adjustment.
Claim 4
Dependent Claim
113 words
A stabilizing and leveling support assembly for trailers as claimed in claim 2 wherein one end portion of the first elongate section is attached to the first leg assembly through a journal bearing, the other end portion of the first elongate section being threaded, the one end portion of the second elongate section being hollow with internal threads which engage the threads on the first elongate section, a spring is attached axially to the other end of the second elongate section, the other end of the spring being attached to the second leg assembly, and the means for adjusting the length of said elongate member comprises means for rotating said first elongate section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |