Pipes and tubular conduits – Distinct layers – With intermediate insulation layer
Patent
1981-09-08
1983-10-18
Bryant, III, James E.
Pipes and tubular conduits
Distinct layers
With intermediate insulation layer
138113, 138114, 138115, 138148, 60322, F16L 914
Patent
active
044100132
ABSTRACT:
A steel tubing and more particularly a composite dual tubing which can be suitably used for an exhaust pipe capable of effectively reducing the radiated noise from the exhaust pipe of automobiles. A metallic dual tubing of the present invention comprises: lugs (20a); lugs (20a) and heat-resistant filler material (24); or, the spacer member (16) and the heat-resistant filler member (17).
REFERENCES:
patent: 326242 (1885-09-01), Prosser
patent: 400094 (1889-03-01), Limont
patent: 1761281 (1930-06-01), Taub
patent: 3133612 (1964-05-01), Sailler
patent: 3595275 (1971-07-01), Steans et al.
patent: 3880194 (1975-04-01), McNeal
patent: 3946764 (1976-03-01), Hubbell
patent: 4233816 (1980-11-01), Hensley
Endo Hiroshi
Miura Yosinari
Sasaki Takesada
Shiraishi Masahiko
Yamaguchi Masayuki
Bryant III James E.
Nippon Steel Corporation
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