Pipe joints or couplings – For branched path – T-type
Patent
1988-12-02
1990-05-29
Reese, Randolph A.
Pipe joints or couplings
For branched path
T-type
285367, 285373, 285419, 285424, 138148, F16L 3900
Patent
active
049290002
ABSTRACT:
A multiple walled metal chimney formed of a plurality of axially joined chimney sections each of which utilizes positionally captured spacer rings. Joint clamps are used to connect the chimney sections for formation of the complete chimney conduit. The spacer rings are positionally captured between annular shoulders formed in the inner and outer walls of the chimney sections to eliminate welding of the rings. The rings may include an expansion joint to allow circumferential expansion and contraction of the ring with the walls.
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American Metal Products Company
Bordas Carol
Reese Randolph A.
Sutherland Malcolm L.
Zarins Edgar A.
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