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21. 发明授权

US06158309A Double-drive double-lock ratcheting wrench 失效
标题翻译：双驱动双锁棘轮扳手
公开(公告)号：US06158309A
公开(公告)日：2000-12-12
申请号：US176591
申请日：1998-10-21
申请人： David R. Baker
发明人： David R. Baker
IPC分类号： B25B13/08 , B25B13/46 , B25B13/02
CPC分类号： B25B13/46 , B25B13/08
摘要： An ratcheting-type wrench for use in driving a hexagonal nut having a wrench head. The wrench head has upper and lower jaw portions that are rigidly joined by at least one web. The jaws have several faces that allow the wrench to be ratcheted about the nut to different drive positions without removing the wrench from the nut. The jaws have two drive faces that allow the wrench to drive the nut with the wrench tips in an open-ended embodiment, and in both an open-ended and a box-ended embodiment allow the wrench to ratchet in 30 degree increments. The faces are configured to prevent corner contact with the nut so that the corners are not rounded off. A lock face is provided to prevent the removal of the wrench from the nut while applying torque.
摘要翻译：用于驱动具有扳手头的六角形螺母的棘轮式扳手。扳手头具有通过至少一个腹板刚性连接的上下颚部分。夹爪有几个表面，允许扳手在螺母周围棘轮移动到不同的驱动位置，而不需要从螺母上取下扳手。夹爪具有两个驱动面，其允许扳手以开口实施例用扳手尖端驱动螺母，并且在开口端和框形实施例中，扳手可以以30度的增量棘轮。这些表面被配置成防止与螺母的角接触，使得角部不被倒圆。提供锁定面以防止在施加扭矩的同时从扳手上拆下扳手。

22. 发明授权

US5884539A Adjustable wrench 失效
标题翻译：活动扳手
公开(公告)号：US5884539A
公开(公告)日：1999-03-23
申请号：US873632
申请日：1997-06-12
申请人： David R. Baker
发明人： David R. Baker
IPC分类号： B25B13/12 , B25B13/14 , B25B13/16
CPC分类号： B25B13/14 , B25B13/12
摘要： An adjustable wrench has a positioner member which moves forward and rearward to position a nut generally along a center line of the jaw drive faces. The wrench has a movable jaw with a shank which extends slidingly through a cavity in the stationary jaw. The positioner member has a rearward edge that slidingly engages a forward edge of the shank so that it will move forward relative to the stationary jaw as the movable jaw moves toward the stationary jaw. The positioner member is retained in the cavity with a pin and elongated slot arrangement. The pin extends through side walls of the cavity, or alternately it may be mounted to inner sides of the legs. The legs fit within the cavity stationarily and have a receptacle which slidingly receives a portion of the positioner member. The legs may be retained by lugs on an upper edge and lips on a lower edge. Alternately, the legs may be retained by wedging them apart from each other.
摘要翻译：可调扳手具有定位器构件，该定位构件向前和向后移动，以将螺母大致沿钳口驱动面的中心线定位。扳手具有可移动的夹爪，其具有滑动地延伸通过固定夹爪中的空腔的柄部。定位器构件具有向后滑动地接合柄的前边缘的后边缘，使得当可动爪向着静止颚移动时，定位器元件相对于静止颚向前移动。定位器构件用销和细长的狭槽布置保持在空腔中。销延伸穿过腔的侧壁，或者可以安装到腿的内侧。腿部固定在腔体内并具有滑动地容纳定位器构件的一部分的容器。腿可以由上边缘上的凸耳和下边缘上的唇保持。或者，腿可以通过将它们彼此楔入而保持。

23. 发明授权

US4889020A Open end ratchet type wrench 失效
标题翻译：开口棘轮式扳手
公开(公告)号：US4889020A
公开(公告)日：1989-12-26
申请号：US91099
申请日：1987-08-31
申请人： David R. Baker
发明人： David R. Baker
IPC分类号： B25B13/08 , B25B13/46
CPC分类号： B25B13/08 , B25B13/46
摘要： An open end wrench for use with a nut allows ratcheting of the wrench without removing the wrench from the nut. The wrench has fixed upper and lower jaw portions. An upper primary drive face and an upper secondary drive surface are located on the upper jaw portions. A lower primary drive face and a lower secondary drive face are located on the lower jaw portions. A rear stop face is located at the junction of the upper and lower jaw portions. Clearances are provided in the upper and lower jaws to enable the wrench to be rotated relative to the nut either approximately 30 degrees from a primary to a secondary drive position, or 60 degrees from primary to primary drive positions.
摘要翻译：与螺母一起使用的开口扳手可以不用扳手将扳手从螺母上拆下来。扳手具有固定的上下颚部分。上部主驱动面和上部次级驱动表面位于上部钳口部分上。下部主驱动面和下部副驱动面位于下钳口部分上。后止挡面位于上下爪部分的交界处。间隙设置在上下钳口中，以使得扳手能够相对于螺母旋转大约30度从初级驱动位置到次级驱动位置，或者从初级驱动位置到主驱动位置为60度。

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