Combination hand and lift cart

Claim 1

A combination hand and lift cart for manually lifting, lowering and carrying unitary heavy loads to and from ground and truck-bed levels and horizontally, comprising: a. a pair of isosceles triangular trusses with equal sides and opposite acute angles, said equal sides being shorter than a longer side opposite an obtuse angle; b. transverse frame members horizontally spacing said triangular trusses parallely apart with similar sides and angles opposing and connected at their respective angles and the respective centers of said longer sides to define a flat-topped frame body having oppositely disposed ends, one of said ends of said body frame being extended in line with said longer sides and adapted to engage the bed of a truck for loading and unloading purposes and the other of said ends being extended in line with adjacent shorter sides and brought together to define a sleeve having a free End and oppositely disposed studs fixed thereon normal to the plane of said longer sides, and a transverse frame member joining said obtuse angles defining a transverse center axis around which said flat-topped frame body is adapted to tilt; c. a handle adapted to be slidably mounted in said sleeve for extending the length of said flat-topped frame body relative to said center axis, and hence the leverage of any force applicable to said handle for tilting said frame body around said axis; d. axles fixed to said transverse frame member defining said transverse center axis; and e. wheels of equal radius mounted for rotation on said axles, said radius being less than than a perpendicular dropped from either longer side to either opposite obtuse angle of one of said similar trusses, said radius, perpendicular and lengths of said truss sides being related in a ratio adapted for said one of said oppositely disposed ends of said flat-topped frame body, when tilted about said transverse center axis, to reach truck-bed level when the other of said ends is adjacent ground level.