US3630582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing joints
Assignee: Mersen SA
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Filing: 1970-03-03
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Granted: 1971-12-28
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Expires: 1990-03-03
Abstract
Abstract This invention relates to sealing joints, for example, for preventing leakage of a fluid from one part of a machine to another via relatively rotating members such as a shaft and a bearing therefor. According to the invention, the sealing joint comprises a barrier means that is formed from the fluid itself, from one of its components and from a body in contact with the fluid to be sealed. The barrier means advantageously comprises the condensate of a condensable body and this body may either be contained within the fluid to be sealed or it may be introduced between the said fluid and an exterior fluid. The formation of the condensate can be effected by cooling appropriate parts of the system.
Inventors
- 👤 Jacques Maire
- 👤 Robert Gremion
- 👤 Jean Lemaire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/403; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
In combination, a bearing member having walls, a rotary shaft received by said bearing member, and a sealing joint for sealing off a fluid, means being provided to cool said walls of said bearing member, said joint comprising barrier means formed from at least one of the constituents of said fluid, and at least one disc mounted on said shaft perpendicular to the axis thereof to form a labyrinth in conjunction with said bearing member walls.
Claim 2
Dependent Claim
76 words
In combination, a bearing member having walls, a rotary shaft received by said bearing member, and a sealing joint for sealing off a fluid, means being provided to cool said walls of said bearing member, said joint comprising barrier means formed from at least one of the constituents of said fluid, and at least one disc mounted on said shaft perpendicular to the axis thereof to form a labyrinth in conjunction with said bearing member walls.
Claim 3
Dependent Claim
21 words
A joint according to claim 1, wherein said barrier means is a condensate of a condensable body contained within said fluid.
Claim 4
Dependent Claim
25 words
A joint according to claim 1, wherein said barrier means is a condensate of a condensable body introduced between said fluid and an exterior fluid.
Claim 5
Dependent Claim
15 words
A joint according to claim 2, wherein said barrier means is present adjacent said disc.
Claim 6
Dependent Claim
55 words
A joint according to claim 1, wherein two discs are mounted on said shaft each perpendicular to the axis thereof to define a chamber and to form a labyrinth with said bearing member walls, said barrier means being present adjacent said discs and consisting of the condensate of a condensable body introduced into said chamber.
Claim 7
Dependent Claim
18 words
A joint according to claim 2, wherein said fluid is gaseous nitrogen and said condensable body is camphor.
Claim 8
Dependent Claim
18 words
A joint according to claim 3, wherein said fluid is gaseous nitrogen and said condensable body is camphor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |