Power-driven tool having a mechanism for setting the rotary angl

Details Power-driven tool having a mechanism for setting the rotary angl Power-driven tool having a mechanism for setting the rotary angl

1996-12-23

2000-10-17

Vo, Peter

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

173104, 173201, E02D 702

Patent

active

061316717

ABSTRACT:
A power-driven hammer has a tool holder a middle bore portion which is supported inside a housing and urged backward by a compression spring. The rear end of a large bore portion of the tool holder is slidably fitted into a spline ring which is secured to the front end of a middle housing. Spline grooves are formed in the inner periphery of the spline ring at its front end while spline gears are formed on the outer periphery of the large bore portion. When the spline grooves and the spline gears are engaged with each other, the tool holder, being urged backward, is locked with its rotation prohibited. This tool holder can be temporarily unlocked to allow its rotation by sliding a change ring cover forward and the tool holder itself, thereby disengaging the large bore portion from the spline ring.

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patent: 5320177 (1994-06-01), Shibata
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