Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1995-08-21
1998-12-22
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
81 631, B25B 1346
Patent
active
058507671
ABSTRACT:
An improved ratchet mechanism for box end wrenches or similar devices consisting of a driver ring with cam teeth on one face, a driven ring fixed to a socket member rotatably confined in the driver ring, the socket member having a wrench configuration in its interior, and a pawl ring rotatably supported on the socket member. The pawl ring has cam teeth cooperating with the driver cam teeth and the pawl ring and the driven ring have shorter interfitting teeth. The cam teeth have sufficient rise to hold the short teeth engaged when the driver ring is rotated one way, and to allow the shorter teeth to disengage when the driver ring is rotated the other way. A means for directly applying axial forces to engage the sloping faces of the cam teeth of the pawl ring and the driver ring thereby tending to encourage meshing of the driven teeth of the socket member and the driving teeth of the pawl ring in the form of a spring is positioned between the driver ring and the retainer ring. In addition, an angular force feature or first tongue is provided with essentially perpendicular faces, and in conjunction with the complementary cam surfaces there is provided an essentially perpendicular angular force feature or second tongue. The lengths of angular force features are chosen such that when the ratchet teeth are engaged, axial clearance available will be sufficient to permit the angular force features to slip past each other.
REFERENCES:
patent: 1321005 (1919-11-01), Bowman
patent: 4030384 (1977-06-01), Newman
patent: 4187746 (1980-02-01), Shebalm
patent: 4939961 (1990-07-01), Lee
Camax Tool Co.
Meislin D. S.
Neuman Joseph G.
LandOfFree
Ratchet reversing mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ratchet reversing mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ratchet reversing mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2037908