Metal deforming – With means to drive tool – Including pneumatic- or fluid-actuated tool support
Patent
1989-04-03
1990-08-14
Jones, David
Metal deforming
With means to drive tool
Including pneumatic- or fluid-actuated tool support
72416, 81301, 140105, 1375123, 137513, 60477, 60479, 60482, B21J 912
Patent
active
049476726
ABSTRACT:
A valve for use in a hydraulic compression tool. The valve has a frame with a central chamber, a first inlet, a second inlet and a discharged outlet. A first gate is located at the first inlet. A plunger assembly having a first plunger member and a second plunger member are movably mounted in the central chamber with a spring biasing the plunger member against the second plunger member. The second plunger member has a conduit between the second inlet and the first plunger member. The valve has a first home position that substantially prevents fluid from flowing therethrough. The valve has a second manual release position wherein fluid can flow into the first inlet and out the discharge outlet. The valve also has a third automatic relief position such that in the event a predetermined maximum fluid pressure is exceeded a gate will open between the first plunger and the second plunger member to allow fluid to flow from the second inlet through the valve and out the discharge outlet.
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Burndy Y35/Y35-2 Hydraulic Hypress Operating, Maintenance & Instructions, 1967.
Cielesz Henry
Garramone Steven M.
Hoover John B.
Pecora Gennaro L.
Burndy Corporation
Jones David
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