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2. 发明授权

US06938315B2 Tool for facilitating the removal and replacement of engine valve stem springs and seals 失效
标题翻译：用于便于拆卸和更换发动机气门杆弹簧和密封件的工具
公开(公告)号：US06938315B2
公开(公告)日：2005-09-06
申请号：US10684234
申请日：2003-10-10
申请人： Fransisco Alanis
发明人： Fransisco Alanis
IPC分类号： B25B27/24 , B25B27/26 , B23P19/04
CPC分类号： B25B27/26 , B25B27/24 , Y10T29/53565 , Y10T29/5357
摘要： A tool for the removal and replacement of valve springs on the cylinder head of an internal combustion engine while the cylinder head is either mounted to the engine block within the vehicle or is positioned on a work bench apart from the engine. The tool comprises a bracket component that is mounted by a number of bolts to the cylinder head to be worked on. The bracket includes a number of upright threaded bolts each associated with an adjacent upright guide. A pressure plate is progressively positioned on each set of the upright bolts and upright guides. Beneath the pressure plate are positioned two (or more) valve guides that engage the outer upper perimeter of two or more valve springs. A nut is threaded on to the upright bolt in a manner that forces the pressure plate and the valve guides downward onto the valve springs. Compression of the springs releases the split rings or collars that hold the valve springs to the valve stems. The end of the valve stems that incorporate the split ring attachment mechanisms are allowed to move upward into the valve guides while the perimeter of the spring is compressed. In this manner the split ring can be removed and the springs released upon removal of the nut from the threaded upright bolt. The pressure plate may then be moved to the next upright bolt on the bracket to effect removal of the adjacent set of valve springs.
摘要翻译：一种用于拆卸和更换内燃机的气缸盖上的气门弹簧的工具，同时气缸盖或者安装在车辆内的发动机缸体或者位于与发动机相隔的工作台上。该工具包括支架部件，该支架部件通过多个螺栓安装到待加工的气缸盖上。支架包括多个直立螺栓，每个与相邻的直立导轨相关联。压板逐渐定位在每组立式螺栓和直立导轨上。压板下方定位有两个（或更多个）阀导向件，该导向件与两个或更多个阀弹簧的外上周接合。将螺母拧紧到立式螺栓上，使得压板和阀向下引导到阀弹簧上。弹簧的压缩释放将阀弹簧固定到阀杆上的开口环或套环。当弹簧的周边被压缩时，允许结合有开口环附接机构的阀杆的端部向上移动到阀引导件中。以这种方式，可以去除开口环，并且从螺纹立式螺栓上取下螺母时释放弹簧。压板然后可以移动到支架上的下一个立式螺栓，以实现相邻的一组阀弹簧的移除。

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