B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
121/22, 138/40.1
B25D 9/16 (2006.01) B25D 9/02 (2006.01) B25D 9/12 (2006.01) B25D 9/14 (2006.01) B25D 17/24 (2006.01)
Patent
CA 1259232
PERCUSSIVE TOOL ABSTRACT A percussive tool for generating impact impulses, compris- ing a casing in which is movably mounted a hammer piston. A shank of the hammer piston is received in an actuator cy- linder for imparting thereto impact energy for performing the workstroke and is enageable with a hammer piston return stroke means. The tool is also provided with a hammer piston de- celeration means comprising an annular projection in the middle part of the hammer piston and a dashpot in which this annular projection is received, the dashpot having a braking portion within which the dashpot diameter is substantially equal to the diameter of the annular projection. The dashpot has, within the braking portion, a throttling means through which the braking portion communicates with the main part of the dashpot.
495914
Ermilov Nikolai P.
Fadeev Petr Ya.
Fadeev Vladimir Ya.
Korobkov Vladlen V.
Kulagin Rim A.
Institut Gidrodinamiki Imeni M.a. Lavrentieva Sibirskogo Otdelen
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Spetsialnoe Konstruktorskoe Bjuro Gidroimpulsnoi Tekhniki Sibirs
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