Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1977-06-06
1978-09-05
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277DIG4, 277157, 277165, 277DIG6, 432115, F16J 1532, F27B 724
Patent
active
041114396
ABSTRACT:
A rotary seal seals a large, high temperature rotary drum, such as a rotary cement kiln, from the inflow of ambient air where the drum is mounted for rotation in respect to a stationary hood, the drum having a substantially circularly cylindrical surface at one open end thereof substantially coaxial with the axis of rotation of the drum, and the hood having an opening through which the cylindrical surface extends. The seal is made of a strip of flexible material for encircling the cylindrical surface, the flexible material being substantially air impermeable and resistant to heat and oxidation at temperatures at least up to 250.degree. F. The outer edge of the strip is sealed to the hood. A wear resistant liner is affixed to the underside of the inner edge of the strip to space the strip from the cylindrical surface. The side of the liner opposite the strip mates with the cylindrical surface and is biased thereagainst.
REFERENCES:
patent: 1550591 (1925-08-01), Stone
patent: 2124108 (1938-07-01), Grece
patent: 2253098 (1941-08-01), Schneider
patent: 2515629 (1950-07-01), Chambers
patent: 2522993 (1950-09-01), Coffey
patent: 2826403 (1958-03-01), Moklebust
patent: 2930643 (1960-03-01), Mastrobattista et al.
patent: 3193266 (1965-07-01), Becker
patent: 3532330 (1970-10-01), Swanson
patent: 3698727 (1972-10-01), Greenwald
patent: 3940239 (1976-02-01), Rossi et al.
"Rotary Kiln Seals . . . ," Sam Webb, Reprint From Pit & Quarry, Issue of Aug. 1975, pp. 2.
Amcord, Inc.
Ward, Jr. Robert S.
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