F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/47
F16J 15/18 (2006.01)
Patent
CA 1337872
A universal seal cage lantern ring (USCLR) is provided with a slotted land type structure on both sides of a flexible central web, with the USCLR being constructed in a continuous undefined length, so that lantern rings can be cut to size therefrom, with the USCLR being adapted to wrap around a shaft so as to form a single complete ring around any given size shaft for which it is cut The structure resembles an I-beam in which the I-beam flanges have been transversely slotted on both sides of the central web. When used for small diameter shafts, this structure prevents fracture or snapping of the ring due to the flexibility of the central web and the slots between lands on both sides of the ring. For large diameter shafts, lantern ring rotation is minimized because portions of the packing rings adjacent the lantern ring protrude into the slots between adjacent outer lands, thus locking the packing rings adjacent the lantern ring and the lantern ring together, which increases frictional contact of the assembly with the stuffing box bore and prevents rotation. Moreover, the slot structure of the outside lands permits quick non-destructive removal of the lantern ring by a corkscrew type packing puller tool, since the corkscrew tip when inserted into the stuffing box tends to run along the interior wall of the stuffing box and engages an exterior slot between adjacent lands outside of the lantern ring, facilitating ring removal.
609732
Macrae & Co.
New England Braiding Company Inc.
LandOfFree
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