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US 4,325,274 AGranted
Hydraulic force producing device
AssigneeCockerill
InventorGhislain A. Martelee
Life of this patent
Estimating the term…
Abstract
A hydraulically operated device for applying a force to a component, for example to tighten a component such as a nut comprises a square peg to engage the nut, first hydraulic means in the form of a motor to rotate the square peg rapidly and second hydraulic means in the form of a piston and co-operating arm arrangement to rotate the pegs slowly with a substantial force.
Claims9
A hydraulically operated device for applying a force to a component, said device comprising:
- first engagement means adapted to abut a support surface;
- and
- second continuous action engagement means mounted within a first arm to engage said component;
- first hydraulically operated driving means mechanically coupled to the second engaging means and adapted to drive the second engaging means at a relatively high speed, said first driving means and associated gears retaining the second engagement means fixed relative to the first engagement means, and a second hydraulically operated driving means positioned to move the second engaging means with an increasing force at a relatively low speed but with a substantial force thus to impart a further movement to the second engagement means relative to the first engagement means.
1 more element
Dependencies are inferred from the claim text.