Percussion tool utilizing negative pressure

Details Percussion tool utilizing negative pressure Percussion tool utilizing negative pressure

1985-09-04

1988-05-03

Kazenske, E. R.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

173134, B25D 916

Patent

active

047414049

ABSTRACT:
A percussion tool has a frame in which a percussion element is fitted such that it can move axially by a small distance and in which a hammer for hitting the percussion element is supported axially movably. The hammer is moved toward a standby position by a supply of a high pressure thereto, while forming a negative pressure acting on the hammer to force it toward a percussion position and, in the standby position, the high pressure is released to allow the hammer to move toward the percussion position by the negative pressure.

REFERENCES:
patent: 3299968 (1967-01-01), Cunningham
patent: 4100976 (1978-07-01), Stone

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