Lift/tilt-bed trailer
OwnerJ. Michael Shielsinventor
Life of this patent
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Abstract
A lift/tilt-bed trailer. Apparatus is described for either raising from or lowering to the ground a trailer bed in a single step while maintaining a substantially horizontal attitude relative thereto, or for tilting the trailer bed which is normally positioned parallel to the ground when the trailer is in its traveling mode for the purpose of loading or unloading the bed without substantial change in the orientation of the trailer "U"-frame in which the bed is located. Four pivotable tracks attached to the frame and corresponding roller wheels attached to the bed cooperate to achieve the desired motion. Since the trailer need not be detached from whatever device is used to move it about when it is to be loaded or unloaded, increased stability results with consequent reduction in risk to the operator.
Claims10
A lift/tilt-bed trailer which comprises in combination:
- a. a first substantially rigid elongated frame member having a first end and a second end;
- b. a second substantially rigid elongated frame member rigidly attached to said first frame member substantially perpendiuclar thereto at the first end thereof;
- c. a third substantially rigid elongated frame member rigidly attached to said first frame member in a direction substantally perpendicular thereto at the second end thereof and disposed in substantially the same direction as said second frame member, said third frame member being substantially parallel thereto, whereby a substantially planer, three-sided rectanguler "U"-frame is formed;
- d. a first wheel;
- e. a second wheel;
- f. means for rotatably attaching said first wheel to said second frame member such that said first wheel is located on the side of said second frame member away from said third frame member;
- g. means for rotatably attaching said second wheel to said third frame member in an opposing manner to said first wheel;
- h. a substantially planar rectangular bed adapted to fit substantially within said rectangular "U"-frame;
- i. bed positioning means for raising and lowering said substantially planer rectangular bed relative to said rectangular "U"-frame, said bed positioning means including:
- 1. a first track member pivotably attached to said second frame member on the side thereof facing said third frame member;
- 2.
Dependencies are inferred from the claim text.