Power-driven striking tool having a mechanism for setting the ci

Details Power-driven striking tool having a mechanism for setting the ci Power-driven striking tool having a mechanism for setting the ci

Filed on

1998-10-05

Date issued

2000-06-13

Examiner

Vo, Peter

Patent Class

Tool driving or impacting

SubClass

Impacting devices

SubSubClass

Hammer head driven by pulsating fluid pressure

Other Related Categories

173 48, 279 195, B23B 3107

Type

Patent

Status

active

Patent number

060737050

Description

ABSTRACT:
There is provided a power-driven striking tool including: a casing; a tool holder rotatably supported inside the casing and having a front end to which a tool bit is attached; and an operating member fitted around the tool holder and exposed to the outside of the tool so as to be manually slidable in the axial directions of the tool holder and integrally rotatable with the tool holder. The operating member is biased rearward by a compression spring along the axis of the tool holder into contact with the casing. The tool further includes first teeth provided on the operating member where it comes into contact with the casing and second teeth provided on the casing where it comes into contact with the operating member. When the operating member is brought into contact with the casing, the first and second teeth engages each other to prevent the operating member and thus the tool holder from rotating relative to the casing.

REFERENCES:
patent: 3430708 (1969-03-01), Miller
patent: 3847229 (1974-11-01), Wanner et al.
patent: 3876014 (1975-04-01), Moores, Jr.
patent: 4236588 (1980-12-01), Moldan et al.
patent: 4434859 (1984-03-01), Rumpp et al.
patent: 4491445 (1985-01-01), Hunger et al.
patent: 4585077 (1986-04-01), Bergler
patent: 4824298 (1989-04-01), Lippacher et al.
patent: 5603516 (1997-02-01), Neumaier
patent: 5833405 (1998-11-01), Nielsen

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