US3604576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled handling truck
Assignee: NORD AVIAT SOC NATIONALE DE CO
•
Filing: 1969-10-07
•
Granted: 1971-09-14
•
Expires: 1989-10-07
Abstract
Abstract A self-propelled truck comprising a control cabin permitting the distribution of loads between waiting zones and transfer zones, comprising at least two elements coupled to each other by articulated coupling joints and provided with displacement devices permitting at will lateral or turning movement in situ, a skewing plate and retractable guides.
Inventors
- 👤 Jacques Poccard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:30
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/52; B64; B64F; B64F1/00; B64F1/32; B64F1/322
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A self-propelled truck comprising a control cabin permitting the distribution of loads between waiting zones and transfer zones, characterized in that said truck comprises four independent wheeled elements each of which includes a cargo handling platform, each of said elements being coupled to each other by articulated joints whose axes extend parallel to the face of said platforms so that the platforms normally present a continuous surface, displacement means in the form of two driving double pivoting rollers, angularly controlled in the pivoting plane by a motor device and loose pivoting diabolo wheels disposed under said elements so as to support the loads to be handled, said elements being movable as a unit at will, with lateral or turning movements of the displacement means according to orders from said control cabin, one of said platforms including a skewing plate, and retractable guides disposed on the other of said platforms assuring continuous articulation of loads being handled by the truck.
Claim 2
Dependent Claim
159 words
A self-propelled truck comprising a control cabin permitting the distribution of loads between waiting zones and transfer zones, characterized in that said truck comprises four independent wheeled elements each of which includes a cargo handling platform, each of said elements being coupled to each other by articulated joints whose axes extend parallel to the face of said platforms so that the platforms normally present a continuous surface, displacement means in the form of two driving double pivoting rollers, angularly controlled in the pivoting plane by a motor device and loose pivoting diabolo wheels disposed under said elements so as to support the loads to be handled, said elements being movable as a unit at will, with lateral or turning movements of the displacement means according to orders from said control cabin, one of said platforms including a skewing plate, and retractable guides disposed on the other of said platforms assuring continuous articulation of loads being handled by the truck.
Claim 3
Dependent Claim
113 words
A self-propelled truck according to claim 1, characterized in that said skewing plate is articulated on a frame of said one of said platforms in three points, one of which is situated on the opposite side of said coupling joints and two on the same side as said coupling joints, a boarding element being locked at will inside of said platform and resting upon said skewing plate, said one of said platforms also including lateral guides articulately secured thereto at one end on said boarding element and at the other end on the same side of said coupling joints, so as to define guiding channels for loads to be handled on said platform.
Claim 4
Dependent Claim
93 words
A truck in accordance with claim 2, characterized in that said boarding element is in the form of a crossmember free for lateral movement on the said skewing plate for engaging a transfer floor by means of centering lugs engaging in notches provided in the transfer floor, with said lateral guides being articulated at their extremities, on the one hand, on said one of said platforms and, on the other, on the said boarding element so as to form guiding passages for the loads, the loads being displaceable by fixed retractable driving rollers.
Claim 5
Dependent Claim
67 words
A truck in accordance with claim 3, characterized in that said retractable guides are placed in the extension of the guides of another adjacent platform, and fixed, mobile and retractable rollers are arranged between the said guides in order to displace the loads laterally, while articulated diabolo wheels are fitted on the whole surface of the elements, circulation passages being provided for the evacuation of the loads.
Claim 6
Dependent Claim
66 words
A truck in accordance with claim 4, characterized in that the operating mechanism of the driving diabolo wheels comprises a self-aligned shaft provided with endless screws in engagement with tangent wheels keyed on the pivotal shafts of the said driving diabolo wheels, and a servomotor controlled by a steering wheel mounted in the cabin which impresses at will on the said shaft, suitable movements of rotation.
Claim 7
Dependent Claim
51 words
A truck in accordance with claim 5, characterized in that the driving mechanism for the rotation of the diabolo wheels comprises a first reversing gear and a bevel gear to which is coupled a second shaft interrupted by a second reversing gear and coupled to the driving motor through a gearbox.
Claim 8
Dependent Claim
38 words
A truck in accordance with claim 6, characterized in that the cabin comprises a control panel provided with pushbuttons for combining at will the lateral and rotational movements, a steering wheel, an accelerator pedal and a brake pedal.
Claim 9
Dependent Claim
79 words
A truck in accordance with claim 7, characterized in that it comprises safety devices in the form of a finger keyed on the pivotal shaft of the driving diabolo, the said finger being arranged to come into abutment against two stops placed in the 90* lock position and against two electric safety contacts permitting the prohibition of engagement of the reversing position of the first reversing gear and the selection of normal speed of the truck during slow maneuvers.
References Cited (Backward Citations)
US990058A
Cited
US3279631A
Cited
US3370727A
Cited
US3361279A
Cited
US3435969A
Cited
US3447665A
Cited
US3506144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |