Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Patent
2000-03-07
2000-11-21
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
403 91, B25B 2316
Patent
active
061486981
ABSTRACT:
An angle-adjustable box end wrench, which includes a handle having a front coupling block and a transverse receiving open chamber, a box end pivoted to the front coupling block of the handle, the box end having two toothed portions disposed at two opposite sides of the front coupling block, a locking mechanism mounted in the transverse receiving open chamber and controlled to lock the box end, the locking mechanism including a long rod member and a short rod member longitudinally connected together and moved in and out of the receiving open chamber between the locking position and the unlocking position, the long rod member and the short rod member each having a toothed portion for engaging the toothed portions at the web area of the box end, a spring, which holds the long rod member and the short rod member in the locking position, and a screw threaded into a top screw hole on the handle and stopped at a flat shank portion at the long rod member to stop the long rod member from rotation.
REFERENCES:
patent: 1080121 (1913-12-01), Oriol
patent: 2978938 (1961-04-01), Nalley
patent: 3186265 (1965-06-01), Wenturine et al.
patent: 3779107 (1973-12-01), Avery
patent: 4901608 (1990-02-01), Shieh
patent: 4929113 (1990-05-01), Sheu
patent: 5581838 (1996-12-01), Rocco
patent: 5943925 (1999-08-01), Huang
Danganan Joni B.
Scherbel David A.
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