Labyrinth seal with pressurized sealing packing

Details Labyrinth seal with pressurized sealing packing Labyrinth seal with pressurized sealing packing

1986-02-28

1987-07-14

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 84, 277153, F16J 1532, F16J 15447

Patent

active

046798013

ABSTRACT:
Labyrinth seal (11) which is suitable for providing a seal between elements in relative rotation in the presence of infiltrating substances and which is particularly, but not only, suitable for providing a seal between rolls (12) and a housing (16) of rolling stands (10), such seal (11) comprising a stationary collar (19) and a rotary collar (18) that together form a labyrinth (26), means (24) to deliver fluid under pressure and a sealing packing (20) of a flexible material, such sealing packing (20) being located in the innermost portion of the labyrinth (26) and facing such labyrinth (26), the means (24) to deliver fluid under pressure delivering such fluid under pressure to a portion of the labyrinth next to such sealing packing (20).

REFERENCES:
patent: 1722135 (1929-07-01), Frey
patent: 2583671 (1952-01-01), Schmitter
patent: 2620207 (1952-12-01), Wilfrey
patent: 2740647 (1956-04-01), Van Pelt
patent: 2819100 (1958-01-01), Peterson
patent: 3144280 (1964-08-01), Sorenson
patent: 3912284 (1975-10-01), Gosling et al.
patent: 4183417 (1980-01-01), Levefelt
patent: 4379600 (1983-04-01), Muller
patent: 4384387 (1983-05-01), Pachuta
patent: 4427202 (1984-01-01), Backlin
patent: 4428630 (1984-01-01), Folger et al.

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