Holding device for percussion tool

Details Holding device for percussion tool Holding device for percussion tool

1997-12-10

1999-10-26

Howell, Daniel W.

Chucks or sockets

Socket type

Lost motion

279 195, 279 75, 279 82, 279905, B23B 522

Patent

active

059714034

ABSTRACT:
A tool bit holding device for use in percussion apparatuses such as electrically operated hammers is provided. The device includes a tool bit carrier, a front hand-operated grip, and a rear hand-operated grip. The front hand-operated grip is supported by the tool bit carrier so as to be movable in a lengthwise direction and a circumferential direction of the tool bit carrier. The rear hand-operated grip is installed rotatably on a hollow cylinder connected to a casing of the hammer. The removable of a tool bit from the tool bit carrier is accomplished by moving the front grip in the lengthwise direction and then turning it in the circumferential direction to release engagement between the tool bit and the tool bit carrier. The angular orientation of the tool bit carrier relative to the casing of the hammer is accomplished by turning the rear grip relative to the tool bit carrier to shift a angular relation between the tool bit carrier and the casing of the hammer.

REFERENCES:
patent: 4691929 (1987-09-01), Neumaier et al.
patent: 5199833 (1993-04-01), Fehrle et al.

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