E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
121/20
E02F 5/18 (2006.01) E02F 5/20 (2006.01) E21B 4/14 (2006.01)
Patent
CA 1243911
REVERSIBLE AIR-OPERATED PERCUSSIVE ACTION MACHINE FOR DRIVING HOLES IN THE GROUND Abstract A reversible air-operated percussive action machine for driving holes in the ground has a housing accommodat- ing a hammer capable of reciprocating therein. An air dis- tributor is arranged in the hammer in the form of a fixed tube and a valving member movable relative to the tube. Defined between the tube and valving member is an accumu- lating chamber provided with a means for communicating it with an air reeding line. An air restricting means is fur- ther provided for discharging air from the accumulating chamber when the supply of compressed air to the air feed- ing line is terminated. The valving member is spring-load- ed relative to the tube by a spring means arranged to that during feeding compressed air to the accumulating chamber the valving member is acted upon by a pressure force direct- ed counter to the action of the spring means.
474557
Chepurnoi Nikolai P.
Kamensky Veniamin V.
Kostylev Alexandr D.
Plavskikh Vladimir D.
Shemyakin Evgeny I.
Institut Gornogo Dela Sibirskogo Otdelenia Akademii
Marks & Clerk
LandOfFree
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