US3698724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1969-11-12
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Granted: 1972-10-17
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Expires: 1989-11-12
Abstract
Abstract The sealing device particularly adapted to provide a pressuretight passageway for rotating or sliding parts, comprises inflatable seals which can be easily replaced without any interruption of leak thightness. The inflatable seals are each placed in a groove of a rigid support which can be displaced longitudinally between different positions in each of which at least one seal is in contact with each part and one other is freed and can be replaced.
Inventors
- 👤 Robert Blachere
- 👤 Michel Sauvage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/002; F16J15/008; F16J15/46; G; G21; G21C; G21C13/00; G21C13/02; G21C13/06; G21C13/073; G21C13/0735; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S277/00; Y10S277/914
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A sealing device for separate parts to be sealed comprising a rigid support, a face for said support opposite the line of separation of the parts to be sealed, at least four uniformly spaced parallel grooves in said face having a distance between axes smaller than the thickness of each of said parts to be sealed, an inflatable seal in each of said grooves and means for longitudinal displacement of said support with respect to the parts to be sealed between different positions while maintaining leak-tightness by contact between at least one seal and each of said parts, others of said seals being disengaged from said parts for accessibility.
Claim 2
Dependent Claim
109 words
A sealing device for separate parts to be sealed comprising a rigid support, a face for said support opposite the line of separation of the parts to be sealed, at least four uniformly spaced parallel grooves in said face having a distance between axes smaller than the thickness of each of said parts to be sealed, an inflatable seal in each of said grooves and means for longitudinal displacement of said support with respect to the parts to be sealed between different positions while maintaining leak-tightness by contact between at least one seal and each of said parts, others of said seals being disengaged from said parts for accessibility.
Claim 3
Dependent Claim
23 words
A device according to claim 1, including ducts in said support for admitting a fluid under pressure into the spaces between said seals.
Claim 4
Dependent Claim
23 words
A device according to claim 1, said means including rods coupled to said support and to a device for displacement of said support.
Claim 5
Dependent Claim
38 words
A device according to claim 1 said support having six grooves, two of said seals in said grooves being in contact with each of said parts the others of said seals being out of contact with said parts.
Claim 6
Dependent Claim
31 words
A device according to claim 1, said rigid support having six seals, one seal being in contact with each part, the three end seals being disengaged from said parts for accessibility.
Claim 7
Dependent Claim
103 words
A sealing device providing leak-tightness between two annular projections on the rotary plug and on the tank, respectively, of a nuclear reactor, comprising a rigid support, actuating rods for said support for translational displacement of said support from the exterior of the reactor, a removable flange rigidly coupled for rotation with the rotary plug, said rods passing through said flange, six uniformly spaced parallel grooves in said support, an inflatable seal in each of said grooves, at least one of said seals being in contact with each of the projections to be sealed, the end seals being disengaged from the projections and accessible.
Claim 8
Dependent Claim
103 words
A sealing device providing leak-tightness between two annular projections on the rotary plug and on the tank, respectively, of a nuclear reactor, comprising a rigid support, actuating rods for said support for translational displacement of said support from the exterior of the reactor, a removable flange rigidly coupled for rotation with the rotary plug, said rods passing through said flange, six uniformly spaced parallel grooves in said support, an inflatable seal in each of said grooves, at least one of said seals being in contact with each of the projections to be sealed, the end seals being disengaged from the projections and accessible.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |