Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
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B25D
PERCUSSIVE TOOLS
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9/00
Portable percussive tools with fluid-pressure drive,; i.e. driven directly by fluids; , e.g. having several percussive tool bits operated simultaneously
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B25D9/14
Control devices for the reciprocating piston
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B25D9/16
Valve arrangements therefor
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B25D9/22
involving a rotary-type slide valve
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