Apparatus for driving a drilling or percussion tool

Details Apparatus for driving a drilling or percussion tool Apparatus for driving a drilling or percussion tool

1989-06-02

1991-10-01

Yost, Frank T.

Tool driving or impacting

Impacting devices

With means for rotating tool

173119, 173122, B25D 1104

Patent

active

050524976

ABSTRACT:
This invention relates to a device for driving a drilling or percussion tool having a spindle that rotates with respect to a housing. One end of the spindle is adapted to fasten to a tool piece and the other end is connected to an osciliating percussion body movable in the housing by means of a guideway. A drive shaft rotates the tool spindle into rotation or actuates the percussion body via a transmission that is provided with means for converting the rotary motion of the drive shaft into an oscillatory motion of a drive member. The drive member is connected to the percussion body through an elastic member having a non-linear spring characteristic.

REFERENCES:
patent: 3685594 (1972-08-01), Koehler
patent: 4325436 (1982-04-01), Richter et al.
patent: 4446931 (1984-05-01), Bletcher et al.
patent: 4487272 (1984-12-01), Bletcher et al.
patent: 4641714 (1987-02-01), Ferioli

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