ADJUSTABLE WRENCH

摘要

2118523 9320978 PCTABS00027 An adjustable ratchet wrench has a housing (900) carried by a handle (901). The housing has a generally cylindrical chamber which carries a control member (902) that in turn supports the jaws (906). The control member (902) is connected to the handle by a ratchet assembly (908) whose setting determines the direction in which the tool may be used to turn a workpiece. The housing (900) also carries an adjusting disk that engages the jaws (906) and opens and closes them depending upon the direction in which it is rotated. A locking mechanism (930), (940) is provided to prevent the jaws (906) from opening after they have been adjusted to grip a particular workpiece in response to reactive forces on the jaws. The wrench may have a power handle (1022) to drive the workpiece.