Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1998-09-22
2000-06-06
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
81 63, B25B 1346
Patent
active
060705035
ABSTRACT:
A ratcheting handle includes an elongated body having an end portion formed with an inner annular wall that extends in an axial direction to define an axial hole. A ratcheting mechanism is disposed in the axial hole, and includes a gear member that is disposed to be coaxial and rotatable in the axial hole and that has a coupling end engaging a shank of the associated driver bit, and a rim portion disposed around the axial direction. The rim portion is provided with a tooth member that is spaced apart from the annular wall in a radial direction to define an annular chamber therebetween. The ratcheting mechanism further includes a pawl member disposed in the annular chamber, and having a fulcrum point lying in a fulcrum line parallel to the axial direction, and first and second tooth portions disposed at two sides of the fulcrum line in such a manner that one of the tooth portions engages the tooth member when the fulcrum point is shifted between first and second positions along a line parallel to a chord of the gear member. A spring includes a mounting end secured to the fulcrum point, and a free end that extends angularly from the mounting end and that is slidably retained in first and second anchored points on the annular wall.
REFERENCES:
patent: 4869138 (1989-09-01), Farris
patent: 5568751 (1996-10-01), Lee
patent: 5626062 (1997-05-01), Colvin
patent: 5711193 (1998-01-01), Eggert et al.
patent: 5873286 (1999-02-01), Van Lenten
Scherbel David A.
Shanley Daniel G.
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