Piercing structure

Details Piercing structure Piercing structure

1978-06-12

1981-04-14

Maslousky, Paul E.

Expansible chamber devices

Moving cylinder

92151, 92165PR, 91207, F01B 1502

Patent

active

042612527

ABSTRACT:
Triple action piercing structure comprising an outer cylinder, an inner cylinder, a shaft and radially extending piston means operable between the inner and outer cylinders for providing a plurality of separate pressure chambers between the inner and outer cylinders, specific, simple and efficient passage means for passing a pressure medium into and exhausting the pressure medium from the pressure chambers to produce relative axial movement between the inner and outer cylinders at a particularly high pressure for cylinders of predetermined diameter to facilitate piercing of large diameter openings in thick hard workpieces.

REFERENCES:
patent: 2841117 (1958-07-01), Senn
patent: 2982257 (1961-05-01), Fagge
patent: 3430539 (1969-03-01), Freeman
patent: 3477345 (1969-11-01), Johnson
patent: 3752040 (1973-08-01), Pawloski
patent: 4137828 (1979-02-01), Senn

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