In {HEAD ~ preferred modifications} of {TAIL ~ the invention}, the pin is slightly broadened or curved toward the interior so that it will not drop out of the bore when the joint ball is removed, but can be driven in through the extension provided with the outer cone for the joint ball 
of
In { HEAD ~ preferred modifications } of { TAIL ~ the invention } , the pin is slightly broadened or curved toward the interior so that it will not drop out of the bore when the joint ball is removed , but can be driven in through the extension provided with the outer cone for the joint ball
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