Wrench

Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work

Reexamination Certificate

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Details

C081S057360, C081S057500

Reexamination Certificate

active

07490535

ABSTRACT:
This invention is about a device used for installing a fixing nut on the targeted objects-multiple fixing screw axes protruded from the hub or for separating them from the targeted object or the fixing screw axis in order to fix vehicle's tire wheel to the hub when installing or separating a fixing nut from targeted objects. Based on the idle operation of the operating gear, not based on the visual examination, the invention immediately recognizes the complete installation of a fixing nut. Likewise, this invention is to provide a wrench that maximizes user convenience.

REFERENCES:
patent: 3979965 (1976-09-01), Vuceta
patent: 4063475 (1977-12-01), Perkins
patent: 5176047 (1993-01-01), Bai et al.
patent: 6742417 (2004-06-01), Ha

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