Hydraulic chain jack automatic latch control system

Details Hydraulic chain jack automatic latch control system Hydraulic chain jack automatic latch control system

1978-06-16

1980-01-15

Sipos, John

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

254108, B66F 108

Patent

active

041835026

ABSTRACT:
A chain jack utilizing two chains is operated by alternately transferring e chain load from latches incorporated within an upper latch assembly to latches incorporated within a lower latch assembly while moving the upper and lower latch assemblies away from and toward each other by alternate extension and retraction of a hydraulic ram to cause relative movement between the chain and the lower latch assembly. Actuation of the latch mechanism is controlled by hydraulic connection to a pair of four-way valves operated by a control piston having followers from the four-way valves engageable thereon. The control piston is disposed to move with the upper latch assembly while the followers are rigidly affixed to the lower latch assembly. Thus, the engagement and disengagement of the latch mechanisms with the chains are synchronized by the relative movement between the lower and upper latch assemblies.

REFERENCES:
patent: 3858847 (1975-01-01), Chambers
patent: 3860215 (1975-01-01), Chambers

Affiliated with

Also associated with

Rating

Hydraulic chain jack automatic latch control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic chain jack automatic latch control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic chain jack automatic latch control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1025146