B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
121/16
B25D 9/00 (2006.01)
Patent
CA 1234021
AIR-OPERATED REVERSIBLE PERCUSSIVE ACTION MACHINE Abstract An air-operated reversible action percussive machine comprises a housing in which there is disposed for recipro- cations a hammer, defining therewith a front working chamber and having a through radial passage. In the axial interior of the hammer on the side of its tail end there is provided a substantially cylindrical tube of stepped configuration which includes first and second steps of large and small diameters, respectively, these steps having radial passa- ges. The first step of the tube defines with the hammer a rear working chamber, and with the second step defines an annular cavity in which a spring-loaded sleeve capable of axial displacements is disposed. The outer diameter of the sleeve is substantially less than the inner diameter of the first step of the tube to form therebetween an annular passage. The machine is further provided with a means for pressure sealing the above annular cavity, and also a means for controlling the displacements of the sleeve.
464537
Filonov Alexandr D.
Ivinsky Vasily I.
Klimashko Vladimir V.
Kostylev Alexandr D.
Institut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk Sssr
Ogilvy Renault
Proizvodstvennoe Obiedinenie Stroimash
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