Centrifugal electric impact wrench

Details Centrifugal electric impact wrench Centrifugal electric impact wrench

2006-09-08

2010-11-23

Shakeri, Hadi (Department: 3727)

Tools

Including tool driving by impact delivering component or...

Motor or gear driven

C081S057110

Reexamination Certificate

active

07836802

ABSTRACT:
Disclosed is a centrifugal impact wrench using an electric driving motor, which is rotated by electricity supplied from an electric power source, as a power source. The electric impact wrench includes: a sun gear21coupled to a rotation shaft11of the electric driving motor10and rotating; a plurality of planetary gears22including first gear22aengaged with the sun gear21and rotating, and second gear22bhaving a smaller diameter than the first gear22a; an output gear23engaged with the second gear22bof the planetary gear22and rotating; an inertia wheel50rotated by rotation force transmitted from the output gear23; a spindle70rotatably connected to a front portion of the inertia wheel50and provided with a connector71at a side of the spindle50; and a blow body60hitting the connector71when centrifugal force caused by the rotation of the inertia wheel50increases over a predetermined extent, and returning to an initial position by means of a return spring67when the centrifugal force caused by the rotation of the inertia wheel50is reduced below a predetermined extent.

REFERENCES:
patent: 5435398 (1995-07-01), Juan
patent: 5954141 (1999-09-01), Li et al.
patent: 6491112 (2002-12-01), Shin
patent: 6836614 (2004-12-01), Gilmore
patent: 7168340 (2007-01-01), Green
patent: 2002/0098938 (2002-07-01), Milbourne et al.

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