Land vehicles: dumping – Hand trucks and barrows
Patent
1993-08-09
1995-09-12
Huppert, Michael S.
Land vehicles: dumping
Hand trucks and barrows
298 18, 280 4734, B62B 300
Patent
active
054492246
ABSTRACT:
A levered, gravity-assisted, side dump utility cart for transporting and dumping objects and materials has load carrying apparatus, bedframe, a rear carriage, a 360 degree rotatable front carriage, four wheels, and towbar unit. A towbar is used as a lever against underside regions of the bedframe by the operator for manually dumping of loads from either side of the cart. Proximate maximum gravity assistance for levered dumping is obtained by unique and predetermined wheel alignments for each selected embodiment of the side dump cart. For such levered dumping, dump alignment devices define the towbar positions where the proximate maximum gravity assistance is obtained for dumping the load with proximate minimum upward and horizontal force on the towbar lever. The range of selectability and the extent of gravity assistance available to the operator for dumping the cart is determined by the embodiment of this invention. A gravity stable position of the cart in a dumped position enables rotation of the cart away from the dumped load. For stowage of the cart and for handling of the stowed cart, a compact stowed configuration which constrains the motion of the towbar and the front carriage is provided.
REFERENCES:
patent: 3256539 (1966-02-01), Ketterer
patent: 3281186 (1966-10-01), Davis
patent: 4398768 (1983-08-01), Parks et al.
patent: 5249823 (1993-10-01), McCoy et al.
Huppert Michael S.
Morse Gregory A.
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