| 摘要 |
The invention described herein relates to hand powered tools which drive nuts, bolts, screws, and the like. The invention is a ratchet wrench wherein in a first setting a means to receive counterclockwise hand force and convert it into clockwise rotational driving force is provided. Said first setting also comprising a means to receive clockwise hand force and produce clockwise rotational driving force. Likewise, said ratchet wrench, when in a second setting, producing counterclockwise rotational driving force when clockwise hand force is applied and producing counterclockwise rotational driving force when counterclockwise hand force is applied. The result being that the ratchet drives the work twice as efficiently as prior art ratchet wrenches that rely on driving and slipping cycles when being cranked. By contrast, the present invention relies on cycles with two driving components each with opposite slipping cycles such that no net slipping occurs.
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