US3561732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable gooseneck trailer with self-contained elevating means
Assignee: Individual
•
Filing: 1968-10-17
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Granted: 1971-02-09
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Expires: 1988-10-17
Abstract
Abstract A low bed trailer is provided with a detachable gooseneck for connecting the bed portion of the trailer to the fifth wheel of a conventional tractor, and the forward end of the trailer bed has an elevating support which includes a pair of side-by-side hydraulic cylinders adjacent to the other underside of the floor of the trailer bed, and a toggle link means driven from a selfcontained hydraulic system to move a foot toward and away from the trailer bed for raising and lowering the bed.
Inventors
- 👤 Anthony S Pulcini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062; B62D53/065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A mechanism for raising and lowering one end of a detachable gooseneck trailer frame, said mechanism comprising a pair of fluid motors arranged in side-by-side relationship adjacent the under side of the frame, means connecting the movable portions of said fluid motors, track means for confining said fluid motor movable portions to linear movement generally toward and away from the end of the trailer frame, a ground engageable foot portion, toggle link means defining a knee portion, said knee portion being slidably mounted on said foot portion, a strut pivotally extending between said trailer frame and said foot portion to position the foot during raising and lowering of the trailer, said toggle link means including a first link pivotally connected to said fluid motor connecting means, and a second link pivotally connected to said trailer frame, whereby linear movement of said movable fluid motor portions causes limited horizontal sliding movement of said knee portion but not of said foot portion during raising and lowering of said trailer.
Claim 2
Dependent Claim
167 words
A mechanism for raising and lowering one end of a detachable gooseneck trailer frame, said mechanism comprising a pair of fluid motors arranged in side-by-side relationship adjacent the under side of the frame, means connecting the movable portions of said fluid motors, track means for confining said fluid motor movable portions to linear movement generally toward and away from the end of the trailer frame, a ground engageable foot portion, toggle link means defining a knee portion, said knee portion being slidably mounted on said foot portion, a strut pivotally extending between said trailer frame and said foot portion to position the foot during raising and lowering of the trailer, said toggle link means including a first link pivotally connected to said fluid motor connecting means, and a second link pivotally connected to said trailer frame, whereby linear movement of said movable fluid motor portions causes limited horizontal sliding movement of said knee portion but not of said foot portion during raising and lowering of said trailer.
Claim 3
Dependent Claim
38 words
The combination defined in claim 1 wherein said strut comprises an elongated member having a telescoping portion which includes a spring to urge said foot portion away from said fluid motors during raising and lowering of the trailer.
Claim 4
Dependent Claim
42 words
The combination defined in claim 2 wherein said means connecting said movable fluid motor portions comprises a cross member having rollers rotatably mounted adjacent its end portions, and said track means comprising parallel channel members fixed in the underside of said frame.
References Cited (Backward Citations)
US2016468A
Cited
US3288436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |