초록 ▼

A mechanism for use on a boom-type vehicle includes load lifting forks carried by a low profile twist-resistant carriage which is one link in a low profile parallelogram linkage attached to a fly section of the boom and maintained level in all positions of the boom by a slave cylinder connected betw

A mechanism for use on a boom-type vehicle includes load lifting forks carried by a low profile twist-resistant carriage which is one link in a low profile parallelogram linkage attached to a fly section of the boom and maintained level in all positions of the boom by a slave cylinder connected between the boom and a slave link which constitutes a member of the parallelogram linkage. The mechanism can be adjusted to many positions while automatically maintaining the relative position of the forks with respect to the vehicle frame for any boom angle. The mechanism can be adjusted to provide a long reach over or under obstructions in order to remove or place a load. It may also engage loads below ground level. Load pick-up or placement can be performed in confined areas which are unreachable by conventional forklift trucks.

대표청구항 ▼

A forklift variable reach mechanism comprising a forklift assembly adapted to be bodily carried by a boom-supported low profile self-leveling means, said assembly comprising a transversely elongated low profile carriage member having transverse rails fixed on its bottom and extending along its forwa

A forklift variable reach mechanism comprising a forklift assembly adapted to be bodily carried by a boom-supported low profile self-leveling means, said assembly comprising a transversely elongated low profile carriage member having transverse rails fixed on its bottom and extending along its forward and rear sides, a pair of parallel longitudinal laterally adjustable load-engaging and lifting tines having portions extending beneath said transverse rails, spaced hanger elements secured to each tine and extending thereabove and having portions overlying the top faces of said rails and adapted to traverse the rails in opposite directions, a pair of opposing parallel axis extensible and retractable power devices disposed substantially within the confines of the carriage member and having opposite ends connected with the end walls of the carriage member and each being connected to one of said tines between said rails and said spaced hanger elements and being operable to move the tines toward and away from each other laterally along said rails, said tines and said pair of power devices being disposed substantially in a common horizontal plane near the bottom of the carriage member, and supporting means on the carriage member adapted for connection with said self-leveling means.