Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1974-06-13
1976-08-10
Rothberg, Samuel B.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 65, 277 95, 277134, F16J 1516, F16J 1554
Patent
active
039737799
ABSTRACT:
A resilient shaft sealing lip is biassed to bear against a shaft when the shaft is at rest to prevent egress of lubricating liquid past the sealing lip, but upon rotation of the shaft at its rated speed the lip lifts so that sealing friction forces are limited to those generated by liquid friction and a return conveyor mechanism provided in combination with the lip, is effective upon shaft rotation to return escaping liquid and thereby take the place of a tight sealing lip for this purpose. The arrangement thereby provides reduced wear, reduced heat generation and reliable prevention of leakage with long service life consistent with economical and modular construction.
REFERENCES:
patent: 2637574 (1953-05-01), Diehl
patent: 2781209 (1957-02-01), Jacobs
patent: 2936715 (1960-05-01), Southam et al.
patent: 3252298 (1966-05-01), Andrews
patent: 3561770 (1971-02-01), Corsi
patent: 3627390 (1971-12-01), Irwin
patent: 3703296 (1972-11-01), Malmstrom
patent: 3843140 (1974-10-01), Mayer
Burgmann Feodor
Forch Hans
Safft Klaus
Upper Gerd
Cohen Jerry
Firma Carl Freudenberg
Firma Feodor Burgmann Dichtungswerk
Hieken Charles
Rothberg Samuel B.
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