Land vehicles – Wheeled – Tiltable vehicles – stabilized by attendant or article
Patent
1988-10-12
1989-09-12
Marmor, Charles A.
Land vehicles
Wheeled
Tiltable vehicles, stabilized by attendant or article
280 4727, 414346, 414477, 414490, B62B 104
Patent
active
048653390
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION AND PRIOR ART
The present invention relates to a manually movable truck according to the preamble of the appended claim 1.
Trucks of this kind are mainly used for moving gas bottles, carpet rolls and the like over shorter distances in building and reparing works of different kind. The distances over which the trucks are moved are mostly very short, but the trucks are nevertheless necessary, since the load displaced by means of the truck is almost quite impossible to carry by means of man's strength without risks for injuries. When such a truck is moved with a car between different working places, in order to be used on the respective working place for short distance displacement of for instance a welding device, severe problems result in the loading and unloading of the truck from and onto the supporting surface, for example the platform, on which the truck is located in the car. The difference in height between the supporting surface of the car and the supporting surface or ground on which the car stands is almost always important, for which reason some kind of inclined bridge, for instance consisting of planks, must be laid between the two supporting surfaces and the truck is rolled on this, if one is intrested to avoid manual lifting or lowering of either the entire truck with the load or the load units separately. The weight of the gas bottles is not seldom in the range of 100 kg, and it is evident that no human back can manage comfortable lifting of such a load without getting injuries at long sight. Also the rolling of the truck upwardly and downwardly an inclining bridge built is very uncomfortable, since the truck in such cases must support its entire load and it will be difficult to control and retard the movement of the truck in the rolling downwardly and it will be very hard to roll the truck upwardly on said bridge. Alternatively, but this will be very expensive, it is possible to provide the car platform in question with a lifting device.
These drawbacks of the prior trucks of this type do of course occur also in attempts to pass step-like level differences between two different supporting surfaces, such as high steps, with a truck.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a truck of the kind mentioned above, in which the drawbacks discussed above of the prior art trucks are reduced to a high degree, so that the truck with the load units may be easily brought between two supporting surfaces located at substantially different levels.
This object is obtained according to the invention by providing a truck of the kind mentioned above with the characteristics defined in the characterizing part of the appended claim 1.
Through the guided displaceability of the wheel arrangement with respect to the carrying device according to the invention it is possible to bring the truck between two supporting surfaces located at essentially different levels without nearly any problem. When it is desired to load the truck together with its heavy load on a car platform it will be moved towards the platform, so that the end of the carrying device opposite to the handle will come close to the platform, after which the wheel arrangement is held with its wheels in a fixed position on the ground, while the carrying device with the load is displace with respect to the wheel arrangement and on to the platform of the car. When the carrying device is displaced so much with respect to the wheel arrangement, that almost the entire carrying device is resting on the platform, the wheel arrangement is either completely removed from the carrying device, and the comparatively light wheel arrangement is lifted with man power and laid on the platform, or pivoted upwardly past the handle and brought to resting position on the platform without separation from the carrying device. In unloading of the truck from the platform and on to the ground this is done in the opposite order, i.e. the wheel arrangement is brought to bear on the ground and thereafter the carryin
REFERENCES:
patent: 3826528 (1974-07-01), East
patent: 3893687 (1975-07-01), Victor
patent: 4170379 (1979-10-01), Eicher
patent: 4369985 (1983-01-01), Bourgraf et al.
patent: 4561674 (1985-12-01), Alessio
Luoto Risto
Rundborg Bo
Englund Carl
Mar Michael
Marmor Charles A.
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