Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent
1979-12-20
1982-08-10
Schroeder, Werner H.
Tool driving or impacting
Impacting devices
Impact transmitting anvil
92 12, B25D 904
Patent
active
043433685
ABSTRACT:
An impact device for producing impact pulses comprising a body with a movable ram having a front part transmitting the impact pulses and an extension housed in a power cylinder which is connected with the body and filled with a fluid medium under pressure for acting on the end face of the ram extension. There is also a unit ensuring the reverse stroke of the ram mounted on the body and interacting with the ram, and a unit for braking the ram on its idle stroke. According to the invention, the braking unit is formed by a space in the body which opens on one side into the power cylinder and by a movable cylindrical member accommodated in such space. The cylindrical member has bosses separated by a space from each other. The end of the cylindrical member protrudes from the body into the power cylinder while the bosses are located inside the space so that they form a chamber filled with a medium for the reverse stroke of the cylindrical member, and a chamber filled with fluid. The ram extension is provided with a boss interacting with the cylindrical member. The space has a throttling projection inside, located between the bosses and forming, together with the surface of the cylindrical member, a gap for throttling the fluid during braking of the ram on the idle stroke of the latter.
REFERENCES:
patent: 3605916 (1969-11-01), Voitsekhousky
patent: 3892279 (1975-07-01), Amtsberg
Ermilov Nikolai P.
Fadeev Vladimir Y.
Fadeeve Petr Y.
Korobkov Vladlen V.
Kulagin Rim A.
Falik Andrew M.
Schroeder Werner H.
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