Reversible ratchet wrench
OwnerYi-Fu Cheninventor
Life of this patent
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Abstract
A ratchet wrench includes a wrench body and a ratchet assembly disposed in the wrench body. The ratchet assembly includes a ratchet wheel, a Y-shaped bar, two pawls, a pawl spring and a switch member. The Y-shaped bar has a pair of prongs splayed laterally apart. Each of the pawls is engageable with the ratchet wheel and defines a bore in a lower corner thereof for reception of the respective prong of the Y-shaped bar. The pawl spring is disposed between the pawls. The switch member is partly positioned on an exterior of the wrench body, and operable to drive the Y-shaped bar to direct either one of the pawls to engage with the ratchet wheel.
Claims4
A ratchet wrench comprising a wrench body and a ratchet assembly disposed in the wrench body, wherein the ratchet assembly including:
- a ratchet wheel;
- a Y-shaped bar having a stem, a first prong and a second prong extending from the stem, the first prong tilted to the left, and the second prong tilted to the right;
- a first pawl engageable with the ratchet wheel and defining a first bore in a lower right corner thereof, the first bore being tilted to the left for reception of the first prong of the Y-shaped bar;
- a second pawl engageable with the ratchet wheel and defining a second bore in a lower left corner thereof, the second bore being tilted to the right for reception of the second prong of the Y-shaped bar;
- a pawl spring disposed between the first and second pawls;
- and
- a switch member partly positioned on an exterior of the wrench body, and operable to drive the Y-shaped bar to move between a first position where the first pawl is moved to the left into engagement with the ratchet wheel by means of the first prong, and a second position where the second pawl is moved to the right into engagement with the ratchet wheel by means of the second prong.
Dependencies are inferred from the claim text.