Hydraulic tool with rapid ram advance

Details Hydraulic tool with rapid ram advance Hydraulic tool with rapid ram advance

1998-10-14

1999-11-09

Jones, David

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

7245302, 1374545, 60479, B21D 706

Patent

active

059792159

ABSTRACT:
A hydraulic tool having a frame, a conduit system in the frame, a pump in the conduit system, a ram movably connected to the frame, and a mechanical actuator provided in the conduit system for contacting a rear end of the ram. The conduit system is adapted to conduit hydraulic fluid from the pump against both the rear end of the ram and a rear end of the mechanical actuator.

REFERENCES:
patent: 4226110 (1980-10-01), Suganuma
patent: 4339942 (1982-07-01), Svensson
patent: 4823588 (1989-04-01), Bussereau et al.
patent: 4942757 (1990-07-01), Pecora
patent: 4947672 (1990-08-01), Pecora et al.

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