公开(公告)号：US5775184A

公开(公告)日：1998-07-07

申请号：US876488

申请日：1997-06-16

Applicant: James Ellis Cole

Inventor： James Ellis Cole

IPC: B25B13/46 ,  B25G1/06

CPC classification number: B25G1/066 ,  B25B13/461

Abstract: A ratchet wrench including the preferred embodiment of the invention comprises a ratchet head having a conventional ratchet system for rotating a shank about an axis, a connecting pin, and a handle. The generally cylindrical connecting pin is aligned along an axis parallel to the shank axis and is attached to the ratchet head. The connecting pin extends through an orifice in the handle, thereby connecting the handle to the ratchet head. The handle is slidable between a locked position and a unlocked position on the connecting pin. When the handle is in the locked position, splines on the forward end of the handle engage complimentary splines on the ratchet head, thereby allowing the ratchet wrench can be used to rotate a nut or bolt in a conventional manner. When the handle is in the unlocked position, the ratchet wrench can be used to rapidly rotate a nut or bolt by moving the handle in a reciprocating manner. When a nut or bolt to be rotated is near an obstruction, the handle can be unlocked, rotated about the connecting pin axis, then locked, thereby adjusting the angle between the longitudinal axis of the handle and the longitudinal axis of the ratchet head. In many instances, such angular adjustment allows the ratchet wrench to be used to rotate the nut or bolt in the conventional manner while avoiding contact between the handle and the obstruction.

Abstract translation: 包括本发明的优选实施例的棘轮扳手包括棘轮头，其具有用于围绕轴线旋转柄的常规棘轮系统，连接销和手柄。 大致圆柱形的连接销沿着平行于柄轴线的轴线对准并且附接到棘轮头部。 连接销延伸穿过手柄中的孔，从而将手柄连接到棘轮头。 手柄可以在连接销的锁定位置和解锁位置之间滑动。 当把手处于锁定位置时，手柄前端上的花键与棘轮头上的互补花键啮合，从而允许棘轮扳手以常规方式旋转螺母或螺栓。 当把手处于未锁定位置时，棘轮扳手可用于通过以往复方式移动手柄来快速旋转螺母或螺栓。 当要旋转的螺母或螺栓靠近障碍物时，手柄可以解锁，围绕连接销轴线旋转，然后锁定，从而调节手柄的纵向轴线和棘轮头部的纵向轴线之间的角度。 在许多情况下，这种角度调节允许棘轮扳手以常规方式旋转螺母或螺栓，同时避免手柄和障碍物之间的接触。