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US 4,392,687 AGranted
Lifting and tilting trailer
AssigneeInstitute for Industrial Research and Standards
InventorDenis O'Connell
Life of this patent
Estimating the term…
Abstract
A trailer comprises a container supported between a pair of scissors lifts having first and second arms movable about a pivot by a ram. The arms support the container by a pair of rollers and a mounting lug. The mounting lug comprises a lug on the container for engagement with a pair of U-shaped slots, a tilt slot and a lift slot. The lug engages the lift slot when the trailer is to be lifted. For tilting the lug engages the tilt slot thereby causing the rollers to disengage the container to permit tilting.
Claims12
A trailer comprising:
- a container;
- a pair of co-operating scissors lifts laterally spaced apart for reception of the container therebetween, each scissors lift comprising a first and second support arm pivotally connected intermediate their ends to define a scissors pivot;
- means for moving the support arms relative to each other to operate the scissors lift;
- a pair of wheel axles, the wheel axles being respectively connected to the first support arms at their rear ends;
- a mounting means for pivotal connection of the front end of the first arms to the container, the mounting means defining longitudinally spaced apart tilt and lift pivot positions for the container relative to the scissors pivot;
- and
- engagement means adjacent the rear end of the second arms to slidably engage the container, the engagement means being disengageable from the container when the first arms are in the tilt position.
4 more elements
Dependencies are inferred from the claim text.