Face seal with constriction ring

Details Face seal with constriction ring Face seal with constriction ring

2005-11-17

2008-10-07

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S371000, C277S391000

Reexamination Certificate

active

07431304

ABSTRACT:
A face seal is provided with a constriction ring around a rubber boot that constricts the normal outward bulging of the flex section of the rubber boot as it folds and tries to roll forward over itself during axial deflection. The constriction caused by the constriction ring provides for increased frictional hysteresis during compression and decompression of the boot flex section. This increased hysteresis increases the dampening capacity of the seal design and, therefore, reduces undesired vibrations and seal noise generation.

REFERENCES:
patent: 2521137 (1950-09-01), Vedovell
patent: 2769390 (1956-11-01), Heimbuch
patent: 2888280 (1959-05-01), Meyer et al.
patent: 3997805 (1976-12-01), Dochterman
patent: 4095808 (1978-06-01), Glasson
patent: 4136885 (1979-01-01), Uhrner
patent: 4415167 (1983-11-01), Gits
patent: 5797602 (1998-08-01), Less

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