Electric wrench

Details Electric wrench Electric wrench

2007-09-04

2007-09-04

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S165000, C081S170000

Reexamination Certificate

active

11480624

ABSTRACT:
An electric wrench comprises a main body with a head portion, a handle and a neck portion, a worm gear disposed in a receptacle in the head portion and engaged with a movable jaw on top of the head portion, a flexible member disposed between the worm gear and a major gear wheel,a motor housed in a first open space in the main body and connected to a minor gear wheel below the major gear wheel through a second transmission member electrically connected to a battery in a second open space in the main body, a switch unit electrically connected the motor for controlling the activation of the motor and a side cover detachable for covering the first and the second open spaces. Thereby, the motor can drive a slide motion of the movable jaw through the various transmission parts so as to change the clip size of the electric wrench.

REFERENCES:
patent: 4512221 (1985-04-01), Picone
patent: 6477921 (2002-11-01), Picone
patent: 6739221 (2004-05-01), Cha
patent: 6966242 (2005-11-01), Picone
patent: 7114824 (2006-10-01), Picone

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