Metal deforming – With means to drive tool – Including pneumatic- or fluid-actuated tool support
Patent
1991-10-21
1993-06-22
Jones, David
Metal deforming
With means to drive tool
Including pneumatic- or fluid-actuated tool support
267122, 267119, 267130, B21D 2402
Patent
active
052208206
ABSTRACT:
An apparatus and method for use in cushioning movement of a member in a press includes a cushion assembly having a piston and cylinder which are movable relative to each other against the influence of fluid pressure to cushion movement of the member. A flexible diaphragm retains a body of lubricant between an inner side of the diaphragm and the piston. The body of lubricant lubricates a seal between the piston and the cylinder. Fluid pressure is applied against the outer side of the diaphragm to oppose movement of the piston during operation of the press from the open condition to the closed condition. The piston is movable relative to the cylinder, under the influence of the fluid pressure applied against the outer side of the diaphragm and transmitted to the piston, during operation of the press from the closed condition to the open condition. The piston and diaphragm are spaced apart with the body of lubricant filling the space between the piston and diaphragm.
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Publication by Teledyne Hyson entitled "The Tanker" and having a a copyright date of 1987.
Publication by Bellofram Corporation and having a 1988 copyright date.
Budai Michael B.
Terrell John B.
Jones David
Teledyne Industries Inc.
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