US3690694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer stabilizer
Assignee: Individual
•
Filing: 1971-01-04
•
Granted: 1972-09-12
•
Expires: 1991-01-04
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 to a retracted position, in the ground engaging position the legs extend downward to the ground in an outward direction transverse to the longitudinal axis 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 engagement with brackets on the underside of the trailer when the legs are raised to their retracted positions.
Inventors
- 👤 Robert R Herndon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
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: 7
Claim 1
Independent Claim
201 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 of said leg assemblies being secured to said attaching means for a first pivotal movement of said leg assemblies between an operative position extending downward and outward from the trailer and a raised position extending parallel to the underside of the trailer, said leg assemblies being secured to said attaching means for a second pivotal movement of said leg assemblies in a plane parallel to the underside of said trailer and about a perpendicular axis through the attaching means to a retracted position, c. bracket means to hold the leg assembly in the raised position when the leg assembly is engaged in said bracket means, d. means for applying a force to said leg assemblies in a direction transverse to the trailer and towards the longitudinal axis of said trailer, said force tending to move the leg assemblies towards each other when in the operative position and holding the leg assemblies in said brackets when in the retracted position.
Claim 2
Dependent Claim
201 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 of said leg assemblies being secured to said attaching means for a first pivotal movement of said leg assemblies between an operative position extending downward and outward from the trailer and a raised position extending parallel to the underside of the trailer, said leg assemblies being secured to said attaching means for a second pivotal movement of said leg assemblies in a plane parallel to the underside of said trailer and about a perpendicular axis through the attaching means to a retracted position, c. bracket means to hold the leg assembly in the raised position when the leg assembly is engaged in said bracket means, d. means for applying a force to said leg assemblies in a direction transverse to the trailer and towards the longitudinal axis of said trailer, said force tending to move the leg assemblies towards each other when in the operative position and holding the leg assemblies in said brackets when in the retracted position.
Claim 3
Dependent Claim
118 words
A stabilizing and leveling support assembly for trailers as claimed in claim 1 wherein the means for applying the force to said leg assemblies comprises: a. an elongated member having a spring attached to one end thereof in an axial direction and a plurality of transverse openings in the opposite end thereof, b. a toggle mechanism having two extending hook members which are brought towards each other when the toggle mechanism is closed, wherein one hook member of the toggle mechanism is connected to one of the leg assemblies, the second hook member of the toggle mechanism is connected to one of the openings in said elongated member, and the spring is connected to the other leg assembly.
Claim 4
Dependent Claim
59 words
A stabilizing and leveling support assembly for trailers as claimed in claim 1 wherein the leg assembly has, at its end opposite that connected to the trailer, pivotally attached thereto a ground engaging foot member, said foot member rotatable about an axis parallel to the longitudinal axis of said trailer when the leg assembly is in its operative position.
Claim 5
Dependent Claim
37 words
A stabilizing and leveling support assembly for trailers as claimed in claim 1 wherein the leg assemblies comprise an upper and lower section whereby said lower section is received slidably within said upper section for telescopic adjustment.
Claim 6
Dependent Claim
71 words
A stabilizing and leveling support assembly for trailers as claimed in claim 1 wherein the leg assemblies comprise hollow upper and lower sections, said upper section having internal threads and said lower section having external threads which engage with the internal threads of said upper leg section, means for rotating said lower leg section when the leg assembly is in its operative position whereby the trailer can be raised or lowered.
Claim 7
Dependent Claim
98 words
A stabilizing and leveling support assembly as claimed in claim 1 wherein the means for applying the force to said leg assemblies comprises: a. an elongated member consisting of a spring, toggle mechanism and a push rod whereby said push rod is forced in an axial direction by said spring when said toggle mechanism is closed, b. bracket means extending down from the side of said trailer whereby said elongated member is positioned between said bracket means and said leg assembly and said toggle mechanism closed thereby pushing said push rod into forced engagement with said leg assembly.
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |