Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-03-08
1980-02-19
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 42, 277 74, 277 92, 277 95, 305 11, F16J 1536, F16J 1540
Patent
active
041891589
ABSTRACT:
A seal (44,144) between two relative movable structures (14,30) is provided. The seal has a hollow chamber (50) which is gas filled either permanently or when desired. The seal (44,144) has a driving portion (46,146) which may be of the same or of different material from a sealing portion (48,148) with the two portions integrally formed or sealingly joined together. A sealing band or contact surface (57) is provided on the sealing portion (48,148) which has a sealing lip (56) in contact with a facing surface (41) and maintains a substantially constant face angle during axial displacement of the two structures (14,30). The internal gas pressure in the seal may be varied depending on the environmental and temperature conditions and, once sealed, the amount of pressure may be either permanently maintained or changed when desired. It is contemplated that if the material of the seal or any portion thereof has a high permeability to the gas in the seal, a thin membrane (70,170) of material having a low permeability to the gas can be provided in the chamber (50) to protect said high permeability material.
REFERENCES:
patent: 2843349 (1958-07-01), Meyer
patent: 2906562 (1959-09-01), Burgman
patent: 3170700 (1965-02-01), Adams
patent: 3195421 (1965-07-01), Rumsey et al.
patent: 3637222 (1972-01-01), Wilkinson
patent: 3674279 (1972-07-01), McMurray et al.
patent: 3947045 (1976-03-01), Schmidt
Caterpillar Tractor Co.
Ward, Jr. Robert S.
LandOfFree
Gas loaded face seal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas loaded face seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas loaded face seal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-650356