Axial pawl ratchet mechanism

Details Axial pawl ratchet mechanism Axial pawl ratchet mechanism

2004-01-08

2008-11-25

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057130, C081S057290, C081S058300, C081S058400, C081S060000, C192S043000, C192S046000

Reexamination Certificate

active

07454997

ABSTRACT:
An axial pawl ratcheting mechanism is provided that may be used for a wrench and comprises a first disc including axial gear teeth on a first side providing for ratcheting in a first direction. A second disc is provided having axial gear teeth and peripheral gear teeth. The second disc is mounted to the first side of the first disc so that the first disc axial gear teeth engage the second disc axial gear teeth and provide an axial pawl ratchet assembly. A ratchet head is provided having an internally toothed opening for receiving the axial pawl ratchet assembly therein so that the peripheral gear teeth of the second disc engage the internal diameter teeth of the ratchet head in order to transfer torque between the ratchet head and the axial pawl ratchet assembly. An actuator is provided for adjusting the positioning of the axial pawl ratchet assembly between a first engagement position and a second engagement position. In the first engagement position the first disc and the second disc will ratchet in a first direction and transmit torque in a second direction and in the second engagement position the first and second discs will ratchet in the second direction and transmit torque in the first direction.

REFERENCES:
patent: 3621738 (1971-11-01), Northcutt
patent: 3743067 (1973-07-01), Bokovoy
patent: 4030384 (1977-06-01), Newman
patent: 4479409 (1984-10-01), Antonius
patent: 4939961 (1990-07-01), Lee
patent: 4974475 (1990-12-01), Lord et al.
patent: 5058463 (1991-10-01), Wannop
patent: 5388479 (1995-02-01), Sroka
patent: 6101901 (2000-08-01), Daigle
patent: 6109141 (2000-08-01), Nurmi
patent: 2004/0089106 (2004-05-01), Wolfe et al.

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