Pneumatic ram boring machine

Details Pneumatic ram boring machine Pneumatic ram boring machine

1987-10-05

1989-06-20

Yost, Frank T.

Tool driving or impacting

Impacting devices

173DIG2, 181230, B25D 1712

Patent

active

048402346

ABSTRACT:
A pneumatic ram boring machine (12) has an air-permeable hollow cylinder (2) with a sound absorbing and/or oil separating packing (9, 11) arranged in the exhaust air stream of the machine.

REFERENCES:
patent: 3115209 (1963-12-01), Bembinster
patent: 3981378 (1976-09-01), Potter
patent: 4144941 (1979-03-01), Ritter
patent: 4184564 (1980-01-01), Trainor

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