BIASED PAWL RATCHETING WRENCH

摘要

A ratchet wrench comprises a handle defining a cavity including a plurality of teeth on an inner periphery thereof, a wheel, a biasing spring ring, and at least one tooth pawl mounted in recesses formed on the outer periphery of the wheel. The wheel is rotatably mounted inside the cavity and the pawls are biased by the spring ring to engage the plurality of teeth on the inner periphery of the cavity when rotated in a first direction, and to slide over the teeth engage the plurality of teeth on the inner periphery of the cavity when rotated in a direction opposite the first direction.

主权项

1. A ratchet wrench comprising:
a handle having an end defining a cavity and a plurality of teeth formed circumferentially on an inner periphery of the cavity; a wheel rotatably mounted in the cavity of the handle and comprising:
a socket adapted to engage a nut or other suitable element;a pawl recess defined around an outer periphery of the wheel, the pawl recess being bordered by an inclined face on one side and a generally upright face on the other, both extending from the outer periphery of the wheel; a pawl received in the pawl recess, the pawl having at least one tooth facing outward from the outer periphery of the wheel to engage with the plurality of teeth formed on the inner periphery of the cavity; and a biasing member mounted in the cavity of the handle and comprising a resilient biasing element extending into the pawl recess between the upright face of the pawl recess and the pawl, wherein the resilient biasing element provides a biasing force against the pawl to urge the pawl into contact with the inner periphery of the cavity.