B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/44
B23P 19/04 (2006.01)
Patent
CA 1302690
"METHOD AND APPARATUS FOR REMOVING SNAP RINGS" ABSTRACT OF THE DISCLOSURE This invention relates to a set of tools for removing lugless snap rings from the internal annular grooves provided therefor in parts containing internal bores, these tools consisting of a pointed tool for making an indentation in the base of the groove between the ends of the ring, a plunger-actuated ball magazine for placing a ball in the indentation thus formed preparatory to driving the ring around in its groove until one of its ends rides up upon the ball to create a gap therebeneath, a clamping tool for holding the ring in its groove against further relative rotation, a wedge for movement into the gap underneath the raised end of the ring, and a wedge-driving subassembly for moving the wedge into the gap to a point where the raised end of the ring is free of the groove and in position to be grasped and removed. The invention also encompasses the novel method for removing lugless snap rings that includes the steps of making an indentation in the base of the groove between the ends of the ring, inserting a ball in the indentation, rotating the ring within its groove until one of its ends rides up upon the ball creating a gap therebeneath, holding the ring in the groove against further relative rotation, driving a wedge into the gap underneath the ring until the raised end thereof is free of the groove, and pulling upon the end thus freed to remove the ring.
568372
Hull Norman D.
Hull Norman P.
Hull Norman D.
Hull Norman P.
Johnson Ernest Peter
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