Vortex gasket for automotive exhaust system

Pipe joints or couplings – With casing – lining or protector – Insulated

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Details

277101, 277204, 277235R, 285365, 285366, 285910, F16J 904, F16J 1512

Patent

active

054546044

ABSTRACT:
A vortex gasket for automotive exhaust system, preferably used with a special flange having a conical seal surface, is formed by spirally overlaying a metal hoop (2) of flat strip, and an inorganic filler (3) of tape form, and annularly spot welding a winding start portion (2a) and a winding end portion (2b) of the hoop (2) to itself. The tape form of the inorganic filler is wider than the flat strip of the metal hoop so that edges of the inorganic filler form seal contact surfaces spaced beyond edges of the metal hoop. When an external force is applied in the axial direction, slipping occurs between the hoop (2) and the filler (3), and the gasket is telescopically deformed in the axial direction, so that the seal contact surfaces 1a, 1b, at sides of the gasket, are formed in a conical shape.

REFERENCES:
patent: 1952339 (1934-03-01), Solenberger
patent: 2827320 (1958-03-01), Kane
patent: 3926445 (1975-12-01), Farnam
patent: 4273363 (1981-06-01), Angel
patent: 4462603 (1984-07-01), Usher et al.
patent: 4570979 (1986-02-01), Moore
patent: 4693502 (1987-09-01), Oetiker
patent: 5161807 (1992-04-01), Allen et al.
"Metallic Gaskets For Raised-Face Pipe Flanges and Flanged Connections (Double-Jacketed Corrugated And Spiral-Wound) API Standard 601", 7th Edition, Mar. 1988, Section 3.

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