Multi-purpose hydraulic tool

Details Multi-purpose hydraulic tool Multi-purpose hydraulic tool

2006-05-30

2006-05-30

Jones, David (Department: 3725)

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

C137S270000, C173S138000, C173S206000, C091S428000

Reexamination Certificate

active

07051568

ABSTRACT:
A multi-purpose hydraulic tool of the open center and closed center type is provided with an OC/CC knob mounted on the trigger activated spool. The spool has a knob which can be turned to easily move between OC and CC operating conditions, without the use of additional tools. A check spool assembly works in conjunction with spool assembly in the open-center condition to provide for release of oil at the end of the return stroke.Adapters are provided so that crimping heads can be easily interchanged.

REFERENCES:
patent: 3882883 (1975-05-01), Droegemueller
patent: 4366673 (1983-01-01), Lapp
patent: 4548229 (1985-10-01), Johnson
patent: 5442992 (1995-08-01), Sanner et al.
patent: 5778755 (1998-07-01), Boese
patent: 6490962 (2002-12-01), Schultz
patent: 6679340 (2004-01-01), Tatai

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