Hammer drill or chipping hammer device

Details Hammer drill or chipping hammer device Hammer drill or chipping hammer device

1980-05-21

1982-04-20

Reynolds, Wm. Carter

Tool driving or impacting

Drive controlled by relative axial movement of tool

173118, B25D 1104, B25D 1106

Patent

active

043254365

ABSTRACT:
In a device which can be used as a hammer drill or a chipping hammer, a percussion mechanism is located within a working cylinder in the housing of the device. A tool can be placed in one end of the working cylinder and the tool can be rotated without any percussive action or it can be given a combined rotative and percussive action. The percussive action is transmitted over a driving mechanism to an actuating piston which reciprocates a percussion piston through an intermediate air cushion. The drive mechanism includes a driving shaft with a disk pivotally connected to the shaft and in engagement with the actuating piston for selectively effecting the percussive action on the tool.

REFERENCES:
patent: 3301550 (1967-01-01), Reinecke
patent: 3841418 (1974-10-01), Biersack

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