Apparatus for lowering a trailer to the ground
OwnerGerald F. Wisdominventor
Life of this patent
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Abstract
A trailer incorporating the features of the subject invention has a wheel assembly near the trailing end and a scissors-type lift mechanism near the leading end, with a fulcrum support intermediate the wheel assembly and lift mechanism. The method of lowering the trailer to the ground includes the steps of lowering the leading end of the trailer to the ground with the lift mechanism causing the trailing end to pivot about the fulcrum support into engagement with the ground, further raising the leading end of the trailer to raise the fulcrum support off the ground, removing the fulcrum support, and finally lowering the leading end of the trailer until the entire trailer is in flat engagement with the ground.
Claims1
A lift mechanism for elevating a platform or the like comprising in combination:
- at least two pair of laterally spaced link members, said pairs being spaced in a longitudinal direction with each link in the pairs having one end operatively connectable to said platform,
- elongated main arm members, said pairs of link members being connected to said main arm members at spaced locations along the length of the main arm members,
- abutment means connected to one end of said main arm members adapted to abut a reference surface away from which the platform is to be lifted, and
- power lift means operatively connectable at one end to said platform and at the other end to an intermediate location on said main arm members, said intermediate location being spaced from the locations where the link members are connected to said main arm members so as to effect extension and retraction of said abutment means relative to said platform.
Dependencies are inferred from the claim text.