| 摘要 |
A wrist-exercising device that is held in the hand, or hands, of the user while he swings the device as one would a tennis racket, a golf club, or a baseball bat, wherein the device comprises an elongated shaft defined by a handle formed on the free end of the shaft, and including at the opposite end thereof an adjustable coupling member to which is mounted the exerciser arm, the arm being connected to the coupling member so as to be positioned in any predetermined angular degree relative to the handle thereof, wherein the radially extended arm is provided with an interchangeable weight member. The coupling member includes a body member having a locking-block member supported thereon, with a journal member rotatably mounted to the locking-block member. A threaded pin is secured to one end of the arm and passes through the journal, the locking block, and the body member, whereby the pin is provided with a knob to lock the arm in a suitable position. A securing bolt is supported in the body member and extends into the shaft for engagement with a neck member and a cam-head member, thus locking the coupling member to the shaft. A second coupling member includes a first and a second jaw member, each having a plurality of teeth which are adjustably held together by a pin and nut arrangement.
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