Working process of a pneumatic operated ramming tool

Details Working process of a pneumatic operated ramming tool Working process of a pneumatic operated ramming tool

1977-06-17

1979-11-06

Maslousky, Paul E.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Position responsive

91399, 91416, 91417A, F15B 1517, F15B 1522

Patent

active

041731719

ABSTRACT:
At the beginning of a working stroke of a compressed air loaded working piston disposed reciprocally in a pneumatic operated ramming tool said piston is initially set in motion under the action of minor amounts of compressed air until its top becomes immersed into stored compressed air and the working piston is then exposed to the full force of said stored compressed air to perform its working stroke. This working process permits to use a substantially simpler ramming apparatus.

REFERENCES:
patent: 3094043 (1963-06-01), Powers et al.
patent: 3351256 (1967-11-01), Readyhough
patent: 3398648 (1968-08-01), Cairatti
patent: 3651740 (1972-03-01), Perkins
patent: 3687008 (1972-08-01), Densmore
patent: 3901130 (1975-08-01), Lange

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