1. Stroke stop device (1) for a vehicle suspension comprising at least one shock absorber (2) equipped with a first (3) and second (4) portion that can slide relatively, characterized in that it comprises a pin element (44) integral with said first portion or said shock absorber (3) and able to slide with respect to a caliper element (45) integral with said second portion (4) of said shock absorber (2) and in that said caliper element (45) can be actuated to a closed position to lock said pin element (44) to prevent the sliding of and to stop the stroke of said shock absorber (2) said stroke stop device (1) further characterized in that said caliper element (45) comprises at least one brake-shoe (47) that can be closed on said pin element (44) by actuation of a hydraulic system.
2. The stroke stop device (1) for the suspension of a vehicle according to claim 1, further characterized in that it comprises at least one bracket element (43) for making said pin element (44) integral with said first portion (3) of said shock absorber (2).
3. The stroke stop device for the suspension of a vehicle according to claim 1, further characterized in that it comprises at least one bracket element (45) for making said caliper element (45) integral with said second portion (4) of said shock absorber (2).
4. The stroke stop device for the suspension of a vehicle according to claim 1, further characterized in that said hydraulic system comprises a hydraulic circuit and a pump actuated by command means.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A vehicle comprising a motor (5; 12; 20, 21; 32, 33) and at least one rotatable element (1, 2; 15; 18, 19; 30, 31) which is in contact with the ground during travelling of the vehicle, characterized in that, for the purpose of propelling the vehicle, the motor (5; 12; 20, 21; 32, 33) is adapted for influencing the momentary position of the centre of gravity of the vehicle relative to the ground in such a manner that the rotatable element (1, 2; 15; 18, 19; 30, 31) performs a rotation under the influence of gravitational force.
2. A vehicle as claimed in claim 1, characterized in that the motor (5; 12; 20, 21; 32, 33) influences the position of the centre of gravity by displacing a driving weight (5, 7; 12; 20-25; 32-36).
3. A vehicle as claimed in claim 2, characterized in that the motor (5; 12; 20, 21; 32, 33) is adapted for driving an element which is capable of sliding out (e.g. a telescopic element) that is connected to the driving weight (5, 7; 12; 20-25; 32-36).
4. A vehicle as claimed in claim 2, characterized in that the motor (5; 12; 20, 21; 32, 33) influences the position of the centre of gravity by rotating the driving weight (5, 7; 12; 20-25; 32-36) about an axis of rotation of the rotatable element (1, 2; 15; 18, 19; 30, 31).
5. A vehicle as claimed in claim 4, characterized in that the axis of rotation of the rotatable element (1, 2; 15; 18, 19; 30, 31) is a physical axis from which the driving weight (5, 7; 12; 20-25; 32-36) is suspended.
6. A vehicle as claimed in any one of claims 1 to 5, characterized in that during travelling the contact surface of the vehicle with the ground is substantially in one line which is situated in a plane extending perpendicular to the ground and through the axis of rotation of the rotatable element (1, 2; 15; 18, 19; 30, 31).
7. A vehicle as claimed in any one of claims 2 to 6, characterized in that the rotatable element (1, 2; 15; 18, 19; 30, 31) is constituted by a roller (15) in which the motor (5; 12; 20, 21; 32, 33) and the driving weight (5, 7; 12; 20-25; 32-36) are disposed.
8. A vehicle as claimed in any one of claims 1 to 7, characterized in that the vehicle is provided with a steering mechanism (16) for influencing its direction of travel.
9. A vehicle as claimed in claim 8, characterized in that, for the purpose of influencing the direction of travel of the vehicle, at least one rotatable element (1, 2; 15; 18, 19; 30, 31) is provided with means (16) for adjusting the momentary distance from the axis of rotation of at least a part of the relevant rotatable element (1, 2; 15; 18, 19; 30, 31) to the ground.
10. A vehicle as claimed in any one of claims 1 to 9, characterized in that the vehicle is provided with two drivable rotatable elements (1, 2; 15; 18, 19; 30, 31) and has two substantially parallel, once passed through contact tracks with the ground.
11. A vehicle as claimed in claim 10, characterized in that the vehicle is provided with a control system which is adapted for making the motor (5; 12; 20, 21; 32, 33) drive selectively neither of the two rotatable elements (1, 2; 15; 18, 19; 30, 31), one of the two rotatable elements (1, 2; 15; 18, 19; 30, 31) or both rotatable elements (1, 2; 15; 18, 19; 30, 31).
12. A vehicle as claimed in claim 10 or 11, characterized in that for each of the rotatable elements (1, 2; 15; 18, 19; 30, 31) there is provided a motor (5; 12; 20, 21; 32, 33).
13. A vehicle as claimed in any one of claims 10 to 12, characterized in that each rotatable element (1, 2; 15; 18, 19; 30, 31) is provided with a driving weight (5, 7; 12; 20-25; 32-36).
14. A vehicle as claimed in claim 13, characterized in that the driving weight (5, 7; 12; 20-25; 32-36) comprises a motor (5; 12; 20, 21; 32, 33) with an energy source, such as an accumulator (7; 22, 23) andor a solar cell andor a fuel can.
15. A vehicle as claimed in claim 13 or 14, characterized in that the driving weight (5, 7; 12; 20-25; 32-36) is substantially disposed in the rotatable element (1, 2; 15; 18, 19; 30, 31).
16. A vehicle as claimed in any one of claims 12 to 15, characterized in that each of the two motors (5; 12; 20, 21; 32, 33) is substantially disposed in one of the rotatable elements (1, 2; 15; 18, 19; 30, 31).
17. A vehicle as claimed in any one of claims 10 to 16, characterized in that the axes of rotation of the rotatable elements (1, 2; 15; 18, 19; 30, 31) are substantially in alignment.
18. A vehicle as claimed in any one of claims 1 to 17, characterized in that the motor (5; 12; 20, 21; 32, 33) andor the driving weight (5, 7; 12; 20-25; 32-36) areis connected to a gear wheel (6; 24, 25) which is capable of being driven by the motor (5; 12; 20, 21; 32, 33) and which is suitable for co-operating with a gear ring (8) that is connected to a rotatable element (1, 2; 15; 18, 19; 30, 31).
19. A vehicle as claimed in any one of claims 1 to 17, characterized in that the motor (5; 12; 20, 21; 32, 33) andor the driving weight (5, 7; 12; 20-25; 32-36) areis connected to a gear ring (8) which is capable of being driven by the motor (5; 12; 20, 21; 32, 33) and which is suitable for co-operating with a gear wheel (6; 24, 25) that is connected to a rotatable element (1, 2; 15; 18, 19; 30, 31).
20. A vehicle as claimed in claim 18 or 19, characterized in that the gear wheel (6; 24, 25) and the gear ring (8) are disposed in a substantially closed casing.
21. A vehicle as claimed in any one of claims 1 to 17, characterized in that the motor (5; 12; 20, 21; 32, 33) andor the driving weight (5, 7; 12; 20-25; 32-36) areis connected to a worm element (13) which is capable of being driven by the motor (5; 12; 20, 21; 32, 33) and which is suitable for co-operating with a worm wheel (14) that is connected to a rotatable element (1, 2; 15; 18, 19; 30, 31).
22. A vehicle as claimed in any one of claims 1 to 17, characterized in that the motor (5; 12; 20, 21; 32, 33) andor the driving weight (5, 7; 12; 20-25; 32-36) areis connected to a worm wheel (14) which is capable of being driven by the motor (5; 12; 20, 21; 32, 33) and which is suitable for co-operating with a worm element (13) that is connected to a rotatable element (1, 2; 15; 18, 19; 30, 31).
23. A vehicle as claimed in claim 21 or 22, characterized in that the worm element (13) and the worm wheel (14) are disposed in a substantially closed casing.
24. A vehicle as claimed in any one of claims 1 to 23, characterized in that the vehicle is provided with a frame (3; 11; 17; 29) which is suitable for fastening devices (26-28; 34-36) thereto.
25. A vehicle as claimed in claim 24, characterized in that the frame (3; 11; 17; 29) comprises a connecting element between the rotatable elements (1, 2; 15; 18, 19; 30, 31).
26. A vehicle as claimed in claim 25, characterized in that the frame (3; 11; 17; 29) is connected to the driving weight (5, 7; 12; 20-25; 32-36).
27. A vehicle as claimed in claim 25, characterized in that the frame (3; 11; 17; 29) is bearing-supported so as to be freely rotatable about the axis of rotation of the rotatable element (1, 2; 15; 18, 19; 30, 31) and loose from the driving weight (5, 7; 12; 20-25; 32-36).
28. A vehicle as claimed in any one of claims 25 to 27, characterized in that the frame (3; 11; 17; 29) comprises a parallelogram construction (37) with the aid of which the axes of rotation (38, 39) of the rotatable elements (1, 2; 15; 18, 19; 30, 31) are displaceable substantially in vertical direction relative to each other.