US3557982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport vehicles for load-carrying purposes
Assignee: Individual
•
Filing: 1968-10-07
•
Granted: 1971-01-26
•
Expires: 1988-10-07
Abstract
Abstract A transport vehicle for load-carrying purposes and consisting of a power vehicle and a trailer hingedly connected thereto, said trailer having a wheel-supported U-shaped outer stationary frame open to the rear and a U-shaped inner frame open to the rear and supported for vertical movements within said outer frame, said vehicle being distinguished in that a raising and carrying means for the inner frame in the form of a pressure fluid operated power cylinder is mounted at the rear end of each of the limbs of the outer frame as well as centrally at the frontal transverse portion of said outer frame.
Inventors
- 👤 Sune Torsten Henriksson
- 👤 Ake Malmgren
- 👤 Ragnar Ludvig Muotka
- 👤 Lars Harald Widegren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:19
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/64; B60P1/6418
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
A transport vehicle for picking up, transporting and dumping a loaD comprising in combination: a tractor; a rearwardly opening outer U-shaped frame hingedly connected to said tractor and having a pair of longitudinally extending substantially parallel side sections and a transverse section connecting the ends of said side sections adjacent said tractor; a rearwardly opening inner U-shaped frame disposed within said outer frame and having a pair of longitudinally extending substantially parallel side sections and a transverse section connecting the ends of said side sections adjacent said tractor, the distance between said side sections of said inner frame being shorter than the distance between said side sections of said outer frame; first and second hydraulic cylinder units each operatively connected between the free end portion of one of said side sections of said outer frame and the free end portion of the corresponding side section of said inner frame; and a third hydraulic cylinder unit operatively connected between the center of said transverse section of said outer frame and the center of said transverse section of said inner frame, said cylinder units constituting a three-point suspension for said inner frame and being operable for moving said inner frame to and from a position in which said inner frame is in the same horizontal plane as said outer frame and is surrounded by said outer frame and for lowering, raising and tilting said inner frame from said position.
Claim 2
Dependent Claim
237 words
A transport vehicle for picking up, transporting and dumping a loaD comprising in combination: a tractor; a rearwardly opening outer U-shaped frame hingedly connected to said tractor and having a pair of longitudinally extending substantially parallel side sections and a transverse section connecting the ends of said side sections adjacent said tractor; a rearwardly opening inner U-shaped frame disposed within said outer frame and having a pair of longitudinally extending substantially parallel side sections and a transverse section connecting the ends of said side sections adjacent said tractor, the distance between said side sections of said inner frame being shorter than the distance between said side sections of said outer frame; first and second hydraulic cylinder units each operatively connected between the free end portion of one of said side sections of said outer frame and the free end portion of the corresponding side section of said inner frame; and a third hydraulic cylinder unit operatively connected between the center of said transverse section of said outer frame and the center of said transverse section of said inner frame, said cylinder units constituting a three-point suspension for said inner frame and being operable for moving said inner frame to and from a position in which said inner frame is in the same horizontal plane as said outer frame and is surrounded by said outer frame and for lowering, raising and tilting said inner frame from said position.
Claim 3
Dependent Claim
38 words
The combination of claim 1 wherein each of said side sections of said outer frame supports a horizontal stud, each of said first and second hydraulic cylinder units being pivotally supported on a respective one of said studs.
Claim 4
Dependent Claim
47 words
The combination of claim 1, in which a yoke common to both the outer frame and the inner frame is mounted at the rear end of said trailer, said yoke being permanently connected with said inner frame and adapted to be temporarily clamped against said outer frame.
Claim 5
Dependent Claim
50 words
The combination of claim 3 wherein said yoke is provided with carrying pillars integral with the limbs of the inner frame and formed as bearings for studs serving as pivotal supports, said studs being arranged to be clamped to said outer frame by raising said inner frame to transport position.
References Cited (Backward Citations)
US2672247A
Cited
US3024931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |