Ratchet box end wrench

Details Ratchet box end wrench Ratchet box end wrench

2008-01-22

2008-01-22

Shakeri, Hadi (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S057300, C081S057430

Reexamination Certificate

active

07320267

ABSTRACT:
A ratchet box end wrench includes a shank, a ratchet, a ring gear, three wheel members, a belt and a crank. The shank includes a space defined therein, a first pivot hole defined therein and a second pivot hole in communication with the first pivot hole. The ratchet includes a ratchet portion disposed in the space and an axial portion extended from the ratchet portion. The ring gear is connected to the axial portion of the ratchet. The first wheel member includes a pivot disposed in the first pivot hole. The belt is engaged with both of the ratchet and the first wheel member. The second wheel member is connected to the first wheel member so that the first and second wheel members are rotational together. The crank is operatively connected to the second wheel member. The third wheel member is operatively connected to the first wheel member.

REFERENCES:
patent: 322937 (1885-07-01), Hungerfod
patent: 3283621 (1966-11-01), Faso
patent: 4184390 (1980-01-01), Evans
patent: 5129823 (1992-07-01), Hughes
patent: 5458603 (1995-10-01), Futch, Sr.
patent: 5461949 (1995-10-01), Carver
patent: 5775182 (1998-07-01), Plakinger

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