US3695482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel seal
Assignee: Lummus Technology LLC
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Filing: 1971-06-14
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Granted: 1972-10-03
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Expires: 1991-06-14
Abstract
Abstract A pressure vessel including a sealing structure for the cover which comprises a triangularly-shaped gasket in sealing engagement with a curved shoulder on the cover, a gasket engaging surface of the vessel wall and a backing ring positioned between the gasket and a key-ring located in a groove in the vessel wall.
Inventors
- 👤 Colin Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:47
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
An apparatus comprising: a pressure vessel having a wall surrounding an opening therein, a key-receiving groove extending around said wall adjacent to said opening, a gasket-engaging surface extending around the wall at the side of the keyreceiving groove remOte from the opening, a key-ring located in said groove and including a portion which projects from the groove into the vessel, a cover inserted in said opening in the vessel and including a shoulder having a surface outwardly curved towards the gasket-engaging surface, a gasket of substantially triangular cross-section having one side in sealing engagement with the gasket-engaging surface, the second side in sealing engagement with said outwardly curved surface of said shoulder and the third side facing said key-ring a backing ring positioned adjacent to said wall between the key-ring and the third side of the gasket, said backing ring being in sealing engagement with the third side of the gasket and the key-ring.
Claim 2
Independent Claim
154 words
An apparatus comprising: a pressure vessel having a wall surrounding an opening therein, a key-receiving groove extending around said wall adjacent to said opening, a gasket-engaging surface extending around the wall at the side of the keyreceiving groove remOte from the opening, a key-ring located in said groove and including a portion which projects from the groove into the vessel, a cover inserted in said opening in the vessel and including a shoulder having a surface outwardly curved towards the gasket-engaging surface, a gasket of substantially triangular cross-section having one side in sealing engagement with the gasket-engaging surface, the second side in sealing engagement with said outwardly curved surface of said shoulder and the third side facing said key-ring a backing ring positioned adjacent to said wall between the key-ring and the third side of the gasket, said backing ring being in sealing engagement with the third side of the gasket and the key-ring.
Claim 3
Dependent Claim
24 words
The apparatus as claimed in claim 1 wherein said gasket engaging surface extends angularly outwardly toward said opening to facilitate removal of the gasket.
Claim 4
Dependent Claim
41 words
The apparatus as claimed in claim 1 wherein the third side of the gasket which is in sealing engagement with the backing ring is positioned at an angle greater than 90* with respect to the gasket engaging surface around said wall.
Claim 5
Dependent Claim
96 words
The apparatus as claimed in claim 1 and further comprising a pull-up member positioned in the opening; rotatable pull-up means extending through the pull-up member into the cover; a pull-up member-receiving shoulder extending around the wall between the key-receiving groove and said opening, an upper portion of said pull-up member being seated on said pull-up receiving shoulder and a lower portion of said pull-up member being seated on the portion of the key-ring which projects from the groove, whereby rotation of the pull-up means effects tightening and seating of the gasket and takes up dimensional tolerances.
Claim 6
Dependent Claim
51 words
The apparatus as defined in claim 4 and further comprising a jacking bar which extends across said opening and is secured to said wall, and a cover-retaining rotatable bolt extending through the jacking bar and screwed into the cover, whereby rotation of said bolt draws the cover into initial assembly position.
Claim 7
Independent Claim
43 words
The apparatus as defined in clam 5 and further comprising jacking screws in the jacking bar, said jacking screws being rotatable within the bar to engage the outer face of the cover and to break the seal between the gasket and the cover.
Claim 8
Independent Claim
43 words
The apparatus as defined in clam 5 and further comprising jacking screws in the jacking bar, said jacking screws being rotatable within the bar to engage the outer face of the cover and to break the seal between the gasket and the cover.
Claim 9
Independent Claim
232 words
An apparatus comprising: a pressure vessel having an open end, a key-receiving groove extending around the interior surface of said pressure vessel adjacent to the open end, a gasket-engaging surface extending around the interior surface of the vessel adjacent the side of the key-receiving groove remote from the open end of said vessel, a key-ring located in said groove and including a portion which projects from the groove into the vessel, a cover inserted in said vessel to close the open end thereof, the outer portion of the cover at the open end of the vessel, including an outwardly curved shoulder arranged to face the gasket-engaging surface, a gasket of substantially triangular cross-secton extending around the interior surface of the vessel, said gasket having one surface in sealing engagement with the gasket-engaging surface, a second surface in sealing engagement with said shoulder and a third surface facing said key-ring, a backing ring extending around the interior surface of the vessel positioned between the key-ring and the third side of the gasket, said backing ring having a first surface in engagement with said gasket-engaging surface extending around the interior surface of the vessel, a second surface opposite said first surface adjacent to and spaced form said cover, a third surface in engagement with said key-ring and a fourth surface opposite said third surface in sealing engagement with the third surface of the gasket.
Claim 10
Independent Claim
232 words
An apparatus comprising: a pressure vessel having an open end, a key-receiving groove extending around the interior surface of said pressure vessel adjacent to the open end, a gasket-engaging surface extending around the interior surface of the vessel adjacent the side of the key-receiving groove remote from the open end of said vessel, a key-ring located in said groove and including a portion which projects from the groove into the vessel, a cover inserted in said vessel to close the open end thereof, the outer portion of the cover at the open end of the vessel, including an outwardly curved shoulder arranged to face the gasket-engaging surface, a gasket of substantially triangular cross-secton extending around the interior surface of the vessel, said gasket having one surface in sealing engagement with the gasket-engaging surface, a second surface in sealing engagement with said shoulder and a third surface facing said key-ring, a backing ring extending around the interior surface of the vessel positioned between the key-ring and the third side of the gasket, said backing ring having a first surface in engagement with said gasket-engaging surface extending around the interior surface of the vessel, a second surface opposite said first surface adjacent to and spaced form said cover, a third surface in engagement with said key-ring and a fourth surface opposite said third surface in sealing engagement with the third surface of the gasket.
Claim 11
Dependent Claim
97 words
The apparatus as claimed in claim 7 and further comprising a pull-up member positioned in the opening; rotatable pull-up means extending through the pull-up member into the cover; a pull-up member receiving shoulder extending around the wall betweeN the key-receiving groove and said opening, an upper portion of said pull-up member being seated on said pull-up receiving shoulder and a lower portion of said pull-up member being seated on the portion of the key-ring which projects from the groove, whereby rotation of the pull-up means effects tightening and seating of the gasket and takes up dimensional tolerances.
References Cited (Backward Citations)
US2903152A
Cited
US3159302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |