Cylinder arrangement for raising a carriage and uprights of a ma

Details Cylinder arrangement for raising a carriage and uprights of a ma Cylinder arrangement for raising a carriage and uprights of a ma

1978-02-13

1980-08-26

Sheridan, Robert G.

Material or article handling

Elevator or hoist and loading or unloading means therefor

Elevator wherein means comprises guide mounted for relative...

187 9E, B66B 920

Patent

active

042193028

ABSTRACT:
A lift truck having a mast assembly for lifting a load. The assembly includes a first fixed pair of spaced-apart uprights and a second movable pair of spaced-apart uprights with the second pair nested for vertical translation within the first pair, and a carriage coupled to the second pair for vertical translation in relation to the second pair. Two chains, which extend over two sheaves connected to a cross-member fixed to the upper ends of the second pair of uprights, have one end connected to a first hydraulic cylinder and their other end to the carriage. Second and third hydraulic cylinders, behind the first and second pair, are coupled to respective third and fourth sheaves about which extend additional chains having one end connected to the fixed uprights and the other end connected to the movable uprights. The first hydraulic cylinder lifts the carriage in relation to all the uprights and the second and third hydraulic cylinders simultaneously raise the second pair of uprights and the carriage. The second and third hydraulic cylinders are anchored on a cross-brace intermediate the ends of the uprights and acted on by a fourth hydraulic cylinder to tilt the assembly.

REFERENCES:
patent: 2399632 (1946-05-01), Guerin
patent: 2581791 (1952-01-01), Gilman
patent: 2627943 (1953-02-01), Hastings
patent: 3127956 (1964-04-01), Hosbein
patent: 3394778 (1968-07-01), Brinton

Affiliated with

Also associated with

Rating

Cylinder arrangement for raising a carriage and uprights of a ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cylinder arrangement for raising a carriage and uprights of a ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cylinder arrangement for raising a carriage and uprights of a ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1303608