| 摘要 |
A hand tool, such as a ratchet wrench, has a first mode of operation, in which rotational movement of a handle about a first axis is arranged to cause a tool to rotate about the first axis; and a second mode of operation, in which an operative member is able to be rotated about a second axis in a first multiplying region to cause the tool station to rotate about the first axis in a second multiplying region. The first multiplying region may comprise a planetary gear arrangement with planet gears 4; and the second multiplying region may comprise a bevel gear arrangement 8, 9. The second axis extends in a different direction to the first axis, and preferably extends through it. Preferably, the tool comprises a body (1, fig 1), a revolving handle 2 and a conventional handle (3, fig 1). The revolving handle may be rotatable about a longitudinal axis (A, fig 1) of the body to drive an output shaft 5, which in turn drives a ratchet wheel 10. |
