Spring devices – Fluid – Expansible-contractible chamber device
Patent
1992-05-08
1994-05-24
Oberleitner, Robert J.
Spring devices
Fluid
Expansible-contractible chamber device
267130, 92 80, 92 82, 92112, 92160, 184 24, 277 63, 277 69, F16F 902
Patent
active
053141725
ABSTRACT:
A high pressure die cylinder and manifold system including a plurality of die cylinders mounted on a manifold. Each die cylinder includes a cylinder body in which a piston rod and a piston is positioned for limited relative movement with respect to the cylinder body. A cup shaped piston sealing ring is mounted on the cylinder body for engagement with the piston rod and a cup shaped sealing ring is mounted on the piston for engagement with the cylinder body. A lubricant metering ring is mounted on the piston intermediate the sealing rings and the piston has a lubricant chamber that communicates with circumferentially spaced openings in the lubricant metering ring for delivering lubricant to the exterior of the sealing ring. The cylinder body is provided with a radial annular flange, a cylindrical pilot surface and a portion below the pilot surface of the cylinder body is threaded by interengaging threads with an opening in the manifold so that the lower end of the gas cylinder communicates with high pressure gas within the manifold. The manifold is provided with an annular seat surrounding the opening into which the gas cylinder extends and a U-shaped cup manifold sealing ring is provided in the seat and held into position by engagement of the radial flange and a pilot surface on the cylinder body with the manifold.
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Ballato Josie A.
Oberleitner Robert J.
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