Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate
2006-02-07
2006-02-07
Hail, III, Joseph J. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
C089S027120, C192S044000
Reexamination Certificate
active
06993997
ABSTRACT:
A ratchet wrench including a housing with a handle extending therefrom. A rotor is positioned within an opening in the housing. The rotor includes a crosspiece having a polygonal cross-section and a downwardly extending stem for the selective attachment of a socket. A pair of movable wedges is positioned adjacent each side of the crosspiece. A compressed spring separates the movable wedges of each pair and normally urges the wedges away from one another and into snug engagement with both the housing and the crosspiece. A selector is rotatably fastened to the rotor. The selector includes a disk rotatably fastened to the top of the rotor. A fin extends upwardly from the top of the disk and a plurality of arms extends downwardly from the bottom of the disk with one of the arms being provided for each pair of movable wedges. The arms, by manual rotation of the disk, selectively drive one wedge from each pair of movable wedges from engagement with the housing to permit ratcheting of the wrench.
REFERENCES:
patent: 4004666 (1977-01-01), Hinojosa
patent: 4030581 (1977-06-01), Giometti
patent: 4051935 (1977-10-01), Nakayama
patent: 4669339 (1987-06-01), Cartwright
patent: 4987803 (1991-01-01), Chern
patent: 5884537 (1999-03-01), Chen
patent: 5941140 (1999-08-01), Suksi
patent: 6044944 (2000-04-01), Adams et al.
patent: 6047617 (2000-04-01), Chen
patent: 6055888 (2000-05-01), Mitchell
patent: 6267027 (2001-07-01), Mitchell
patent: 6367354 (2002-04-01), Mitchell
patent: 6575058 (2003-06-01), Mitchell
patent: 2041272 (1979-12-01), None
Grant Alvin J
Greiner Stephen R.
Hail III Joseph J.
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