Norman Paul Hull
Engineers at Dudley St, Denver, CO

4757590, Jul 19, 1988

Nov 10, 1986

6/928829

Norman P. Hull - Lakewood CO
Norman D. Hull - Lakewood CO

B23P 1904

294266

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 aroung 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.

4757591, Jul 19, 1988

Nov 10, 1986

6/928836

Norman P. Hull - Lakewood CO
Norman D. Hull - Lakewood CO

B23P 1904

294266

This invention relates to an internal snap ring removal tool which is characterized by a first cylindrically-surfaced clamp-forming element clampable onto a surface of the snap ring exposed outside its groove while the cylindrical surface of the aforesaid element lies in essentially tangent relation to the bore of the part containing the snap ring, and an eccentrically-bored collar that encircles the clamp-forming element for relative rotation therearound in contact with the bore of the part housing the snap ring thereby camming the snap ring free of its groove. The invention also relates to the method of using such a tool for removing snap rings which includes the steps of clamping the cylindrically-surfaced clamping tool onto a portion of the snap ring exposed outside its groove while holding the surface of the tool tangent to the bore of the part housing the ring, placing an eccentrically-bored collar around the clamping tool and rotating the latter around the cylindrical clamping tool surface without turning it so as the cam the ring free of its groove.

6096971, Aug 1, 2000

Oct 28, 1998

9/181354

Norman Douglas Hull - Lakewood CO

H02G 700, H02G 714

174 42

Adaptable, line vibration damping/sag adjustment devices are provided with hollow regions that facilitate drilling of larger holes in the devices so that the devices can hold and clamp lines having correspondingly large diameters.