US3667649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure device for sealing an opening in a wall of a pressurizable chamber
Assignee: Neyrpic SA
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Filing: 1970-11-02
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Granted: 1972-06-06
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Expires: 1990-11-02
Abstract
Abstract The combination of a pressurizable chamber and a closure device comprised of a closure member operable to close an opening in a wall of the chamber, a sealing member operable to seal the opening when the closure member is disposed in the opening and a plurality of locking members movable radially outwardly of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber; the locking members when in their locking position abutting the closure member and having portions thereof engaging in corresponding recesses in that portion of the wall surrounding the opening. The locking members may be moved automatically by means of jacks.
Inventors
- 👤 Georges Thillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/06; F16; F16J; F16J13/00; F16J13/02; F16J13/08; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/212
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
The combination of a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening; a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening, the locking members including at least two spaced segments having gaps therebetween each gap being occupied by a further slidable locking member having parallel side surfaces and of a width approximately equal to that of the gap.
Claim 2
Dependent Claim
141 words
The combination of a pressurizable chamber having an opening in a wall thereof and a device for sealing the opening, the device including a closure member for closing the opening; a sealing member for sealing the opening when the closure member is in its operative position, and a plurality of locking members movable radially of the opening so as to lock the closure member against movement outwardly of the opening due to pressurization of the chamber, the locking members when in their locking position abutting the closure member and having portions thereof engaging corresponding recesses in that portion of the wall surrounding the opening, the locking members including at least two spaced segments having gaps therebetween each gap being occupied by a further slidable locking member having parallel side surfaces and of a width approximately equal to that of the gap.
Claim 3
Dependent Claim
18 words
The combination according to claim 1, and including means for controlling the radial movement of the locking members.
Claim 4
Dependent Claim
43 words
The combination according to claim 2, wherein said means is operable to successively cause the displacement of each further slidable locking member and then the displacement of the first mentioned locking members to enable the closure member to be removed from the opening.
Claim 5
Dependent Claim
42 words
The combination according to claim 3, wherein said means includes two groups of jacks connected to a fixed point and pivotally connected respectively to the further locking members and to the first mentioned members, the two groups of jacks being actuated successively.
Claim 6
Dependent Claim
27 words
The combination according to claim 2, wherein said means is operable to cause a faster displacement of the further members than that of the first mentioned members.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |