Automatic sequencing circuit for lift cylinders

Details Automatic sequencing circuit for lift cylinders Automatic sequencing circuit for lift cylinders

1984-04-17

1986-06-10

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

91517, B66B 920

Patent

active

045937915

ABSTRACT:
The carriage lift and mast lift cylinders are sequentially extended and retracted in the reverse order of pressure required to actuate them by a sequencing valve to insure proper sequential movement of the lift carriage and extension of the mast sections.

REFERENCES:
patent: 3394778 (1968-07-01), Brinton
patent: 3541928 (1970-11-01), Conwell et al.
patent: 3587784 (1971-06-01), Tait
patent: 3967534 (1976-07-01), Cryder et al.
patent: 4349305 (1982-09-01), Wynn et al.
patent: 4369861 (1983-01-01), Rietman

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