B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 23/72 (2006.01) B66C 23/74 (2006.01) E02F 9/18 (2006.01) F15B 13/06 (2006.01) F16F 15/28 (2006.01)
Patent
CA 2252446
The automatic leveling and synchronization system for raising and lowering a counterweight includes at least a primary and secondary cylinder connected in series hydraulic communication. The primary cylinder includes a first rod connected to a first piston, and the first rod is attached to one end of a counterweight. The secondary cylinder includes a second rod connected to a second piston, and the second rod is attached to another end of the counterweight. A surface area of a bottom of the second piston is set equal to a surface area of a top of the first piston.
L'invention porte sur un système de mise à niveau et de synchronisation utilisé pour lever et abaisser un contrepoids. Le système comprend au moins un cylindre primaire et un cylindre secondaire raccordés en série et en communication hydraulique. Le cylindre primaire comprend une première tige raccordée à un premier piston; la première tige est rattachée à une extrémité du contrepoids. Le second cylindre comprend une seconde tige raccordée à un second piston; la seconde tige est rattachée à l'autre extrémité du contrepoids. Une surface de la partie inférieure du second piston est égale à la surface de la partie supérieure du premier piston.
Fleagle Jon
Young David J.
Grove U.s. L.l.c.
Mcfadden Fincham
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