Cart

Details Cart Cart

1986-01-09

1987-04-07

Mitchell, David M.

Land vehicles

Wheeled

Stable vehicles, handle-propelled

108145, 187 18, 254 9C, 280 35, B62B 302

Patent

active

046554661

ABSTRACT:
A cart having a frame, front and rear wheels, and a handle. A pair of elevating link mechanisms are mounted on the frame, each comprising a pair of arms pivotally connected to each other at intermediate positions thereof, rollers are provided on both ends of each of the arms, lower rollers are mounted on rails provided on the frame. A carrier is engaged with upper rollers of the link mechanisms by guide rails. A hydraulic jack is vertically provided on the frame, a ram of the jack engages with a ram receiver supported on two corresponding arms at lower portions thereof and rotatable about lateral axis. A pump is provided for supplying liquid to said hydraulic jack. The elevating link mechanisms are extended by projecting the ram of the jack for elevating the carrier.

REFERENCES:
patent: 2897910 (1959-08-01), Steely
patent: 3112676 (1963-12-01), Boulsover
patent: 3350065 (1967-10-01), Mankey
patent: 4194723 (1980-03-01), Grove
patent: 4274644 (1981-06-01), Taylor
patent: 4405116 (1983-09-01), Eisenberg
patent: 4447041 (1984-05-01), Fujita
patent: 4457403 (1984-07-01), Ream

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