Reversible ratchet wrench whose operation directions are...

Details Reversible ratchet wrench whose operation directions are... Reversible ratchet wrench whose operation directions are...

2008-09-15

2010-11-02

Meislin, D. S (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S177900, C081S063200

Reexamination Certificate

active

07823484

ABSTRACT:
A reversible ratchet wrench includes a drive shank having a support base, a shell pivotally mounted on the support base, a ratchet wheel mounted in the shell and having a plurality of ratchet teeth, a pawl member having a first side provided with a driven face that is driven by the support base to move the pawl member relative to the ratchet wheel and a second side provided with a toothed engaging face meshing with the ratchet teeth. Thus, the user only needs to hold the support base to shake and drive the shell to pivot relative to the support base by the weight of the shell and the ratchet wheel so as to change the operation direction of the ratchet wheel, so that the user can change the operation direction of the ratchet wheel easily and quickly.

REFERENCES:
patent: 1019825 (1912-03-01), Mossberg
patent: 1068380 (1913-07-01), Yuan-Chin et al.
patent: 1451498 (1923-04-01), Faitz
patent: 3958470 (1976-05-01), Lee
patent: 6978699 (2005-12-01), Yuan-Chin et al.

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