US3726421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading and unloading device
Assignee: Individual
•
Filing: 1971-09-10
•
Granted: 1973-04-10
•
Expires: 1991-09-10
Abstract
Abstract A loading and unloading device is located at each end of a loadcarrying vehicle. Each such device consists of a pair of telescoping booms hinged together at their upper ends and hinged to the vehicle body at their lower ends, a telescoping support boom hinged to the other booms at its upper end and to the vehicle body between the booms at its lower end, a double ended lever pivotally mounted intermediate its end at the upper hinge point, and power means attached to one end thereof to cause the other end to pivot, to thereby move a load attached thereto.
Inventors
- 👤 A Goldhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:12
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6472; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
181 words
A loading and unloading device for bulky loads, e.g. finished structural components, large containers, and other heavy loads, and said device consisting of a loading and unloading device arranged in front of and behind the load on the loading surface of a transport vehicle, especially a road vehicle, the said loading and unloading device consisting of two telescoping booms, the upper ends of which are hinged together, while the lower ends are hinged on each side of the centerline of the vehicle, and also consisting of a telescoping supporting tube, the upper end of which is hinged to the upper ends of the said booms, while the lower end is hinged to the vehicle between the said booms, characterized in that a double-ended lever is pivotably mounted at the junction of the upper ends of the booms, one end of the said lever picking up the load and the other end being hinged to at least one pivoting element by means of which the one end of the lever may be swung from one loading and unloading side to the other.
Claim 2
Dependent Claim
181 words
A loading and unloading device for bulky loads, e.g. finished structural components, large containers, and other heavy loads, and said device consisting of a loading and unloading device arranged in front of and behind the load on the loading surface of a transport vehicle, especially a road vehicle, the said loading and unloading device consisting of two telescoping booms, the upper ends of which are hinged together, while the lower ends are hinged on each side of the centerline of the vehicle, and also consisting of a telescoping supporting tube, the upper end of which is hinged to the upper ends of the said booms, while the lower end is hinged to the vehicle between the said booms, characterized in that a double-ended lever is pivotably mounted at the junction of the upper ends of the booms, one end of the said lever picking up the load and the other end being hinged to at least one pivoting element by means of which the one end of the lever may be swung from one loading and unloading side to the other.
Claim 3
Dependent Claim
24 words
A device according to claim 1, characterized in that the pivoting element is hinged to the supporting tube and can be moved along it.
Claim 4
Dependent Claim
49 words
A device according to claim 2, characterized in that a displaceable bearing bracket for the pivoting element is fitted to the supporting tube at its centerline, a guide tube transferring the compression forces and surrounding the supporting tube being arranged at the lower end of the said bearing bracket.
Claim 5
Dependent Claim
43 words
A device according to claim 3, characterized in that the upper end of the supporting tube is hinged to a head, to the two ends of which are hinged the upper ends of the booms, the double-ended lever being mounted therebetween, especially centrally.
Claim 6
Dependent Claim
39 words
A device according to claim 4, characterized in that a displacing device is fitted to the short arm, i.e. the power arm, of the lever, while the load is picked up by the longer arm i.e. the load arm.
Claim 7
Dependent Claim
22 words
A device according to claim 4, characterized in that the load and/or power arm of the double-ended lever is adapted to telescope.
Claim 8
Dependent Claim
34 words
A device according to claim 5, characterized in that a cable sling is attached to the load arm, the lower ends of the cable being fitted with locking devices adapted to the container fittings.
Claim 9
Dependent Claim
34 words
A device according to claim 5, characterized in that the lever, forming a straight line, is made in two parts which, when the device is in the travelling condition, are pivotable to each other.
Claim 10
Dependent Claim
28 words
A device according to claim 2, characterized in that the bearing for the lower ends of the booms and the supporting tube are arranged on a cross member.
Claim 11
Dependent Claim
27 words
A device according to claim 9, characterized in that at least one of the loading and unloading devices is displaceable along the longitudinal axis of the vehicle.
Claim 12
Dependent Claim
33 words
A device according to claim 1, characterized in that opposing supporting bearings for telescoping supporting legs are provided at the front and rear ends of the vehicle, especially directly behind the cross members.
Claim 13
Dependent Claim
52 words
A device according to claim 11, characterized in that the telescoping supporting legs form in the operative position a trestle consisting of the inner parts of the supporting legs located within the outline of the vehicle, and the outer parts of the supporting leg projecting beyond the longitudinal sides of the vehicle.
Claim 14
Dependent Claim
43 words
A device according To claim 12, characterized in that the upper ends of the supporting legs are joined together in the operative position, for example by means of locking pins, while the lower ends are fitted with bearing plates which swing out automatically.
Claim 15
Dependent Claim
46 words
A device according to claim 1, characterized in that the bearing plates are rounded off, while the chassis of the vehicle is provided with guide plates which pivot the supporting leg about the bearing point when the outer part of the said supporting leg is extended.
Claim 16
Dependent Claim
18 words
A device according to claim 11, characterized in that the supporting leg bearing is also a pivoting bearing.
Claim 17
Dependent Claim
33 words
A device according to claim 13, characterized in that the bearing plates are hinged to the outer supporting leg by springs, and that they are swung into the operative position by spring force.
Claim 18
Dependent Claim
48 words
A device according to claim 13, characterized in that the upper end of one supporting leg exhibits a locking pin, while the upper end of the other supporting leg has a recess which engages the locking pin when the said legs are swung out into the operative position.
Claim 19
Dependent Claim
20 words
A device according to claim 3, characterized that the head is made to telescope by means of a supporting tube.
Claim 20
Dependent Claim
25 words
A device according to claim 13, characterized in that an hydraulic press for extending the outer supporting leg is accommodated in the inner supporting leg.
Claim 21
Dependent Claim
18 words
A device according to claim 5, characterized in that the hydraulic presses are arranged in the telescoping parts.
Claim 22
Dependent Claim
28 words
A device according to claim 5, characterized in that gripper arms are fitted to top-unloading devices such as, spreaders, which are fitted in turn to the load arm.
Claim 23
Dependent Claim
19 words
A device according to claim 1 characterized in that hydraulic presses are multi-stage double-acting hydraulic cylinders with press pistons.
Claim 24
Dependent Claim
34 words
A device according to claim 2, characterized in that two pivoting cylinders are provided, the lower ends of which are connected to the outer part of the telescoping supporting tube, on each side thereof.
Claim 25
Dependent Claim
14 words
A device according to claim 1, characterized in that the load arm is collapsible.
Claim 26
Dependent Claim
21 words
A device according to claim 24, characterized in that a hydraulic cylinder with locking hooks is provided on the load arm.
Claim 27
Dependent Claim
36 words
A device according to claim 23, characterized in that the supporting tube consists of two individual stabilizers running parallel with each other, the outer parts thereof being joined together at the bottom by the pivoting-cylinder mounting.
Claim 28
Dependent Claim
30 words
A device according to claim 1, characterized in that separately controlled, hydraulically extensible supporting cylinders, supporting the chassis of the vehicle, are provided externally of the supports for the booms.
Claim 29
Dependent Claim
28 words
A device according to claim 1, characterized in that two loading and unloading devices are joined together by a top-unloading device, the pick-up parts of which are displaceable.
Claim 30
Dependent Claim
20 words
A device as defined in claim 25, wherein the top-unloading device has longitudinally displaceable carriages with gripper and attachment devices.
References Cited (Backward Citations)
US3606044A
Cited
US3616949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |