Patent ID: 7004454

Claim:
A lift apparatus for supporting a load comprising: a ground engaging base frame having a generally horizontally extending central beam with opposite ends, a pair of generally vertically extending intermediate beam each having a lower end attached to an associated one of said central beam ends and having an upper end, a pair of generally horizontally extending end beams each having an inner end attached to an associated one of said intermediate beam upper ends and having an outer end, a pair of spaced apart upwardly and rearwardly extending posts each having a lower end connected to said central beam and having an upper end, a pair of generally horizontally extending legs each having an inner end connected to said central beam adjacent one of said posts and having an outer end, said leg inner ends being spaced a first predetermined distance apart and said leg outer ends being spaced a second predetermined distance apart greater than said first predetermined distance; a pair of ground engaging caster assemblies with each said caster assembly being attached to an associated one of said end beam outer ends; a pair of ground engaging roller assemblies with each said roller assembly being attached to an associated one of said leg outer ends; a pair of handles each attached to an associated one of said post upper ends; a pair of parallelogram linkages, each said linkage having an upper link, a lower link extending generally parallel to said upper link, an outer link, and an inner link formed by a portion of an associated one of said posts, said upper link being connected by first and second pivot means to said inner and outer links respectively, said lower link being connected by third and fourth pivot means to said inner and outer links respectively, said first through fourth pivot means each including an axle about which at least one of said links pivots; a vehicle support means attached to said outer links and including a pair of spaced apart support arms with padding attached to a load supporting surface of said support arms; and a manually actuated hydraulic actuator having a lower end pivotally attached to said central beam and an upper end pivotally connected to said lower links whereby extension of said actuator raises said vehicle support means from a lowered position for engaging and disengaging a load to a fully raised position.