Pipe joints or couplings – With assembly means or feature – Guide and support
Patent
1989-07-05
1990-10-09
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Guide and support
285197, 285349, 285910, 285261, 285175, F16L 3500
Patent
active
049615971
ABSTRACT:
A sealing ring for use in sealing a spigot and the like in an oversized hole is formed of resilient material and comprises a proximal portion, a distal portion and an intermediate seating portion. The proximal portion has an external diameter greater than the diameter of the hole and is adapted for location in a seating groove surrounding the spigot The distal portion has an external diameter between The diameters of the spigot and the hole and an internal diameter less than the spigot diameter and is adapted for location in the gap between the spigot and the hole. The intermediate seating portion is between the proximal and distal portions and tapers inwardly from the proximal portion to the distal portion such that the intermediate seating portion seats on the edge of the hole and centers the seal and spigot.
REFERENCES:
patent: 1202506 (1916-10-01), Gulloway
patent: 3315971 (1967-04-01), Sakurada
patent: 3870348 (1975-03-01), Hawkins
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