Pipe joints or couplings – Swivel – Pipe in socket type
Patent
1978-03-06
1983-01-04
Callaghan, Thomas F.
Pipe joints or couplings
Swivel
Pipe in socket type
285281, F16L 2708
Patent
active
043669735
ABSTRACT:
A rotating union wherein an inner cylindrical tube fits within an outer coaxial cylindrical tube. First and second bearings are between the tubes with the first bearing being closer to the end of the outer tube. The first bearing is attached to absorb substantially all expansive axial forces imposed between the tubes. The second bearing is generally spaced from the first bearing. The second bearing is attached for absorbing substantially only radial forces imposed on the tubes. Packing is axially compressed between the tubes to provie radial expansion sealing therebetween. A structure is provided which accomplishes, in certain embodiments, adjustable axial compressing of the packing from the exterior of the outer tube. The axial compressing in all embodiments is preferably spaced from and non-communicating with the inner tube.
REFERENCES:
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patent: 1928076 (1933-09-01), Rudolph
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patent: 2384360 (1945-09-01), Allen et al.
patent: 2394715 (1946-02-01), Phillips
patent: 2723136 (1955-11-01), Deubler
patent: 2927804 (1960-03-01), Snyder et al.
patent: 2964340 (1960-12-01), Kinzie et al.
patent: 3002769 (1961-10-01), Deubler et al.
patent: 3301567 (1967-01-01), Barr
patent: 3420555 (1969-01-01), Faccou
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