Air hammer and muffler combination

Details Air hammer and muffler combination Air hammer and muffler combination

1978-09-18

1980-02-26

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

60371, 60469, 173DIG2, F15B 1106

Patent

active

041899172

ABSTRACT:
The air hammer is of the type employing a body having a first portion with a central bore and a piston reciprocable in the bore by pressurized air under control of an automatic valve. The body has a second or muffler portion which embraces the first portion and is operative to muffle the noise created by exhaust air from the bore. The muffler portion is provided with pressurized air passage means through which the pressurized air must pass for causing operation of the piston. The passage means are so arranged that removal of the muffler portion from the body disrupts the supply of pressurized air to the piston and thereby renders the hammer inoperative. Headers are provided on the ends of the body and are drawn tightly against the ends of the muffler portion by tie bolts which extend through through-passages, respectively, in the muffler portion. The through-passages are of larger diameter than the associated bolts, and the clearance spaces between the through-passages and their associated bolt provide a portion of said passage means, and act to deliver live air to the piston, to accumulate pressurized air, and to deliver pressurized air for actuating the automatic valve.

REFERENCES:
patent: 3625295 (1971-12-01), Gunning
patent: 4018291 (1977-04-01), Anderson
patent: 4105080 (1978-08-01), Gunning

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