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US 4,860,841 AGranted
Device for maneuvering of trailers
OwnerAngelo Saccoinventor
Life of this patent
Estimating the term…
Abstract
A motorized device for aiding the maneuvering of trailers subsequent to detachment from the towing vehicle is presented which comprises a shaft attachable to the drawbar of the trailer and which is adjustable for height. At least one wheel is mounted at the end of the shaft with the axis of the wheel being perpendicular to the shaft. At least one driving device for driving the wheel in rotation about its axis and a swivelling device for swivelling the wheel are also provided.
Claims5
A motorized device for maneuvering trailers detached from a towing vehicle, the trailers including a drawbar, comprising:
- a vertically adjustable shaft attachable to the drawbar of a trailer, said shaft having opposed upper and lower ends;
- at least one wheel mounted on said lower end of said shaft, said wheel having an axis perpendicular to said shaft;
- at least one driving means for driving said wheel in rotation about said wheel axis, said driving means comprising driving motor means and speed reducer means mounted on said upper end of said shaft wherein said speed reducer means transmits rotary movement to said wheel;
- swivelling means for swivelling said wheel, said swivelling means comprising a handle or manual steering wheel operatively connected to said driving motor means;
- and
- said shaft further comprising;
- a hollow casing vertically adjustable and adapted for attachment to the trailer drawbar;
- and
- a rotatable pin in said casing, said pin transmitting the rotary movement of said driving means to said at least one wheel.
6 more elements
Dependencies are inferred from the claim text.