Land vehicles – Wheeled – Tiltable vehicles – stabilized by attendant or article
Patent
1991-12-30
1993-06-01
Camby, Richard M.
Land vehicles
Wheeled
Tiltable vehicles, stabilized by attendant or article
16 31R, 280 472, B62B 112
Patent
active
052153215
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a transport device for moving objects carried on legs.
Often movement of such objects on floors of hard material is carried through by dragging the object on the floor or carrying it by one or more persons. This is laborous and often implies a heavy load on back, joints and muscles.
The object of the invention is to provide a device of the kind started by way of introduction, that simplifies movement of heavy objects and thereby decreases the risk of stress injuries of different kinds on the body, as well as the number of persons required for carrying through the movement.
This object has been attained with the transport device according to the invention in that it is characterized by a support unit for a leg of the object, said unit including a support frame, wheel means carrying said support frame, and leg engagement means arranged on the support frame at a sideward distance from said wheel means.
Said leg engagement means may include means designed for surface engagement with the leg with a force that increases with the force excerted by the object on the frame, and suitably also means designed for support of the leg transversely to the direction of the load exerted by the object on the frame.
The invention shall now be described more closely with reference to the attached drawings, which schematically show an embodiment, and on which
FIG. 1 is a side view,
FIG. 2 is a view from above, and
FIG. 3 is a perspective view intended to illustrate use of this embodiment of the transport device according to the invention.
The illustrated transport device forms a support unit for a leg of an object to be moved. It includes a support frame generally designated 2 and consisting of an essentially perpendicularly bent flat iron with a long and a short branch 4 and 6, respectively, and a support strut 8 extending between the ends of the flat iron branches 4 and 6. On the underside of the free end of the flat iron branch 6 a support wheel 10 is arranged to be pivotal 360 degrees. On the upper side of the flat iron branch 6 is movable slide 12 is arranged, the branch 6 serving as a guide for said slide by virtue of the fact that side portions of the slide partly extend around the longitudinal edges of the branch 6. The slide 12 along one side thereof carries a long branch 14 of an essentially perpendicularly bent catch arm, a shorter branch 16 of which extends transversely to the flat iron branch 4 on the side of the flat iron branch 4 remote from the flat iron branch 6, as shown in FIG. 2. The catch arm 14, 16, the function of which will be described more closely below, is thus arranged to follow the movements of the slide.
A control and lock device for the movement of the slide 12 comprises two flat iron plates 18 and 20, respectively, which are attached on the upper side of the slide in an upright position at a distance from each other. A guide rod 22 parallel to the flat iron branch 6 extends with play through the plates 18 and 20 and is attached to the flat iron branch 4 with one of its ends. Between the plates 18 and 20 the guide rod 22 extends through a lock plate 24, the lower end of which is tiltably supported on the slide 12 close to the plate 18 and the upper end of which is connected to the plate 20 by means of a draw spring 26. When the lock plate 24 is in an upright position as opposed to the tilted position shown in FIG. 2, it receives the guide rod 22 with play, but is normally drawn through the action of the spring 26 into engagement with the guide rod 22 in the tilted position. In the last-mentioned position the slide 12, by the occurring clamping action between the lock plate 24 and the guide rod 22, is locked to the guide rod 22 against movement towards the flat iron branch 4. However, the lock device described does not prevent movement of the slide 12 in the other direction.
At the upper end of the flat iron branch 4 a plate shaped abutment element 28 is pivotally supported on a pivot 30 extending along the upper edge of branch 4. The side edge of the element 28 ext
REFERENCES:
patent: 3105698 (1963-10-01), Bonarrigo et al.
patent: 3761107 (1973-09-01), Docherty et al.
patent: 4815760 (1989-03-01), Dooley
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