B - Operations – Transporting – 60 – P
Patent
B - Operations, Transporting
60
P
B60P 1/43 (2006.01) A61G 3/06 (2006.01) E05F 7/06 (2006.01)
Patent
CA 2630568
A counterbalance for a ramp assembly includes a chain assembly and a spring assembly. The spring assembly includes a spring and first and second spring fittings. The first spring fitting restrains a first end of the spring when the ramp portion is between a neutral position and the stowed position and moves the first end of the spring toward a second end of the spring when the ramp portion moves from the neutral position toward the deployed position. The second spring fitting is spaced from the first spring fitting and restrains the second end of the spring when the ramp portion is between the neutral position and the deployed position. The second spring fitting moves the second end of the spring toward the first end of the spring when the ramp portion moves from the neutral position toward the stowed position.
Ensemble d'équilibrage pour rampe qui comprend un ensemble de chaînes et un bloc-ressorts. Le bloc-ressorts comporte un ressort et deux emmanchements à ressorts. Le premier emmanchement restreint la première extrémité du ressort lorsque la partie de la rampe se trouve entre une position neute et la position arrimée, puis déplace la première extrémité du ressort vers la seconde extrémité du ressort lorsque la partie de la rampe passe de la position neutre à la position déployée. Le deuxième emmanchement, qui est séparé du premier emmanchement, restreint la deuxième extrémité du ressort lorsque la partie de la rampe se trouve entre la position neutre et la position déployée. Le deuxième emmanchement passe de la deuxième extrémité du ressort à la première extrémité du ressort lorsque la partie de la rampe se déplace de la position neutre à la position arrimée.
Johnson David
Morris Don
Inc. Lift-U Division Of Hogan Mfg.
Lambert Anthony R.
LandOfFree
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