High-strength ratchet structure for ratchet wrench

Details High-strength ratchet structure for ratchet wrench High-strength ratchet structure for ratchet wrench

2008-06-03

2008-06-03

Meislin, D. S (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C192S043200, C081S177700

Reexamination Certificate

active

07380482

ABSTRACT:
A high-strength ratchet structure for ratchet wrench is disclosed to include a driving block with two transverse sliding grooves, two pairs of directional block members respectively movably mounted in the sliding grooves of the driving block, two spring members respectively mounted in the sliding grooves and supported between the associating directional block members, a ratchet member coupled to the driving block, and a direction control ring selectively set in a first position where the ratchet member is locked to the driving block, a second position where the ratchet member is prohibited from clockwise rotation relative to the driving block and allowed for counter-clockwise rotation relative to the driving block, or a third position where the ratchet member is prohibited from counter-clockwise rotation relative to the driving block and allowed for clockwise rotation relative to the driving block.

REFERENCES:
patent: 6047802 (2000-04-01), Huang
patent: 7237459 (2007-07-01), Shiao
patent: 2006/0096422 (2006-05-01), Huang
patent: 2007/0044594 (2007-03-01), Chen
patent: 2007/0240544 (2007-10-01), Hu

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