Assembled multi-component seal
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0449188
(1982-12-13)
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발명자
/ 주소 |
- Gits Norbert W. (6417 Blackhawk Trail Indian Head Park IL)
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인용정보 |
피인용 횟수 :
10 인용 특허 :
2 |
초록
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In a rotary end face seal for fluid pumps or the like including a housing adapted to be received within a seal counterbore, a primary seal ring with an end face portion adapted to engage a mating ring, a spring element urging the primary seal ring axially outwardly of the housing in a first directio
In a rotary end face seal for fluid pumps or the like including a housing adapted to be received within a seal counterbore, a primary seal ring with an end face portion adapted to engage a mating ring, a spring element urging the primary seal ring axially outwardly of the housing in a first direction, and an elastomeric sleeve providing a secondary seal between the housing and the seal ring. The seal also includes a seal ring holder and drive unit which includes radially inwardly directed drive surfaces adapted to engage counterpart outwardly directed drive faces on the primary seal ring, with both of the ring and the drive unit surfaces extending axially to permit free but limited axial movement of said primary seal ring. A tubular shroud is provided for the spring, and the sleeve is held in fluid-tight relation to the ring and the housing by engagement between one end portion of the drive ring and by engagement with the spring shroud on another diameter of the sleeve, the drive ring being held in the position of engagement and against axial outward movement by engagement between its other end surface portion and a locking rib extending inwardly from an inner diameter portion of the housing.
대표청구항
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A rotary end face seal unit comprising, in combination, a seal housing having a first, outer surface portion adapted for reception into a machine member and an inner diameter adapted to receive a seal ring drive unit, said housing further including, at one end thereof, a radially inwardly extending
A rotary end face seal unit comprising, in combination, a seal housing having a first, outer surface portion adapted for reception into a machine member and an inner diameter adapted to receive a seal ring drive unit, said housing further including, at one end thereof, a radially inwardly extending end wall with an interior wall surface, and adjacent the other end thereof, a stiff but resilient, radially inwardly directed locking rib, a drive member having axially inner and outer end faces and a contoured inner surface adapted to mate with the outer surface of an associated primary seal ring in driving engagement, and to permit said seal ring to slide axially thereof, a primary seal ring disposed within at least a portion of said drive member and having driving surfaces corresponding to and directed oppositely to counterpart drive surfaces on said drive member, an exterior end face seal band forming a pair of said primary rings, said primary ring futher including an annular seat for locating a spring shroud, an elastomeric secondary sealing sleeve having axially inner, intermediate, and outer portions, an axially acting coil spring, and a shroud enclosing said spring on its inner diameter, on one end thereof and at least a portion of its outer diameter, said sleeve being held into fluid-tight sealing relation at its axially inner end between said housing end wall and said inner end wall of said drive member, and at its axially outer end between a portion of said spring shroud and said annular seat on said seal ring, said sleeve further having an intermediate portion lying adjacent a portion of said spring shroud and being adapted for a rolling or buckling action to permit free but limited axial movement of said primary seal ring relative to said housing and drive member.
이 특허에 인용된 특허 (2)
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Gits ; Norbert W., Rotary seal with resilient diaphragm.
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Jandt ; Siegfried ; Hammerschmidt ; Gerhard, Slide ring seal.
이 특허를 인용한 특허 (10)
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Dahlheimer, John C., Bellows face seal assembly.
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Milano, Jr., Arthur J.; Dubreuil, Paul; Bricker, Jeffery, Dynamic rotating seal assembly.
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Dahlheimer,John C., Face seal with constriction ring.
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Steinetz, Bruce M.; Dunlap, Jr., Patrick H., High temperature seal for large structural movements.
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Akema Teruo (Saitama JPX), Mechanical face seal for a rotating shaft of a fluid pump.
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Cox, Stephen; Broadbent, Thomas, P04TU drive ring.
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Makhobey Mark (Phoenix AZ), Pressure enhanced self aligning seal.
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Pinto, Pradeep; Baibak, John; Kroha, Michael, Pump seal.
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Dahlheimer,John C, Seal seat assembly with specialized features.
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Ice Kevin F. ; Holt Robert S., Self piloting seal head assembly.
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