Patent US4739899A successfully refreshed from Google Patents.
US4739899A
Expired / Lapsed
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O-Ring closure assembly
Assignee: DARBY ENGINEERING Inc
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Filing: 1986-10-08
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Granted: 1988-04-26
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Expires: 2006-10-08
Abstract
Abstract A closure assembly for pressure vessels comprising a hollow pressure vessel having an internal cylindrical surface, a cylindrical end plug slidably mounted in the pressure vessel and contacting the internal cylindrical surface, the internal cylindrical surface having a first continuous circular groove to receive a segmented ring which retains the cylindrical end plug in the pressure vessel, and the cylindrical end plug having a second continuous circular groove to receive an O-ring seal, the second continuous circular groove having a ramped bottom and two substantially vertical side walls.
Inventors
- 👤 Robert W. Thompson
- 👤 Angelo V. Pugliese, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:25
CPC Classifications
B; B65; B65D; B65D51/00; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/062; F16J13/00; F16J13/02
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
115 words
A closure assembly for pressurized vessels comprising: (a) a hollow pressure vessel having an internal cylindrical surface; (b) an end plug slidably mounted in said pressure vessel and contacting said internal cylindrical surface; (c) said internal cylindrical surface having a continuous circular groove to receive a segmented ring which retains said end plug in said pressure vessel; and (d) said end plug having a continuous circular groove to receive an O-ring seal, said continuous circular groove having a ramped bottom and two substantially vertical side walls whereby said circular groove possesses a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 2
Dependent Claim
115 words
A closure assembly for pressurized vessels comprising: (a) a hollow pressure vessel having an internal cylindrical surface; (b) an end plug slidably mounted in said pressure vessel and contacting said internal cylindrical surface; (c) said internal cylindrical surface having a continuous circular groove to receive a segmented ring which retains said end plug in said pressure vessel; and (d) said end plug having a continuous circular groove to receive an O-ring seal, said continuous circular groove having a ramped bottom and two substantially vertical side walls whereby said circular groove possesses a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 3
Dependent Claim
14 words
The closure assembly of claim 1 wherein said hollow pressure vessel is substantially cylindrical.
Claim 4
Dependent Claim
15 words
The closure assembly of claim 1 wherein said continuous circular groove contains an O-ring seal.
Claim 5
Dependent Claim
16 words
The closure assembly of claim 3 wherein said O-ring seal comprises plastic, rubber, or synthetic rubber.
Claim 6
Dependent Claim
51 words
The closure assembly of claim 2 wherein a first substantially vertical side wall possesses a dimension approximately equal to the diameter of the transverse crosssection of said O-ring seal and a second substantially vertical side wall possesses a dimension less than the diameter of the transverse cross-section of said O-ring seal.
Claim 7
Dependent Claim
54 words
The closure assembly of claim 3 wherein a first substantially vertical side wall possesses a dimension from about 100% to about 175% of the transverse crosssection of said O-ring seal and a second substantially vertical side wall possesses a dimension from about 50% to about 100% of the transverse cross-section of said O-ring seal.
Claim 8
Independent Claim
77 words
An apparatus for receiving and retaining an O-ring seal located in the surface of a member to be in sliding sealing engagement with an opposed member wherein said apparatus comprises a groove having a ramped bottom and two substantially vertical side walls with said groove extending around said surface of said member and possessing a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring in a compressed state.
Claim 9
Independent Claim
77 words
An apparatus for receiving and retaining an O-ring seal located in the surface of a member to be in sliding sealing engagement with an opposed member wherein said apparatus comprises a groove having a ramped bottom and two substantially vertical side walls with said groove extending around said surface of said member and possessing a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring in a compressed state.
Claim 10
Dependent Claim
12 words
The apparatus of claim 7 wherein said groove contains an O-ring seal.
Claim 11
Dependent Claim
15 words
The apparatus of claim 8 wherein said O-ring seal comprises plastic, rubber or synthetic rubber.
Claim 12
Dependent Claim
50 words
The apparatus of claim 8 wherein a first substantially vertical side wall possesses a dimension approximately equal to the diameter of the transverse crosssection of said O-ring seal and a second substantially vertical side wall possesses a dimension less than the diameter of the transverse cross-section of said O-ring seal.
Claim 13
Dependent Claim
52 words
The apparatus of claim 8 wherein a first substantially vertical side wall possesses a dimension from about 100% to about 175% of the transverse cross-section of said O-ring and a second substantially vertical side wall possesses a dimension from about 50% to about 100% of the transverse cross-section of said O-ring seal.
Claim 14
Dependent Claim
54 words
An end plug having a continuous circular groove having a ramped bottom and two substantially vertical side walls for receiving and retaining an O-ring seal whereby said circular groove possesses a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 15
Dependent Claim
54 words
An end plug having a continuous circular groove having a ramped bottom and two substantially vertical side walls for receiving and retaining an O-ring seal whereby said circular groove possesses a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 16
Dependent Claim
15 words
The end plug of claim 12 wherein said continuous circular groove contains an O-ring seal.
Claim 17
Dependent Claim
16 words
The end plug of claim 13 wherein said O-ring seal comprises plastics, rubber or synthetic rubber.
Claim 18
Dependent Claim
51 words
The end plug of claim 13 wherein a first substantially vertical side wall possesses a dimension approximately equal to the diameter of the transverse crossection of said O-ring seal and a second substantially vertical side wall possesses a dimension less than the diameter of the transverse cross-section of said O-ring seal.
Claim 19
Dependent Claim
53 words
The end plug of claim 13 wherein a first substantially vertical side wall possesses a dimension from about 100% to about 175% of the transverse crosssection of said O-ring and a second substantially vertical side wall possesses a dimension from about 50% to about 100% of the transverse cross-section of said O-ring seal.
Claim 20
Dependent Claim
49 words
An end plug having a continuous circular taper adjacent to an annular projection for receiving and retaining an O-ring seal whereby said continuous circular taper possesses a region to receive said O-ring in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 21
Dependent Claim
49 words
An end plug having a continuous circular taper adjacent to an annular projection for receiving and retaining an O-ring seal whereby said continuous circular taper possesses a region to receive said O-ring in an essentially uncompressed state and another region to receive said O-ring seal in a compressed state.
Claim 22
Dependent Claim
15 words
The end plug of claim 17 wherein said continuous circular taper supports an O-ring seal.
Claim 23
Dependent Claim
16 words
The end plug of claim 18 wherein said O-ring seal comprises plastic, rubber or synthetic rubber.
Claim 24
Dependent Claim
35 words
The end plug of claim 18 wherein said annular projection possesses a dimension perpendicular to the longitudinal axis of said end plug of less than the diameter of the transverse cross-section of said O-ring seal.
Claim 25
Dependent Claim
36 words
The end plug of claim 18 wherein said annular projection possesses a dimension perpendicular to the longitudinal axis of said end plug from about 50% to about 100% of the transverse cross-section of said O-ring seal.
Claim 26
Dependent Claim
120 words
A process for conducting reverse osmosis in a pressure vessel having a closure assembly which comprises: (a) a hollow pressure vessel having an internal cylindrical surface; (b) an end plug slidably mounted in said pressure vessel and contacting said internal cylindrical surface; (c) said internal cylindrical surface having a continuous circular groove to receive a segmented ring which retains said end plug in said pressure vessel; and (d) said end plug having a continuous circular groove to receive an O-ring seal, said continuous circular groove having a ramped bottom and two substantially vertical side walls, and possessing a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring in a compressed state.
Claim 27
Dependent Claim
120 words
A process for conducting reverse osmosis in a pressure vessel having a closure assembly which comprises: (a) a hollow pressure vessel having an internal cylindrical surface; (b) an end plug slidably mounted in said pressure vessel and contacting said internal cylindrical surface; (c) said internal cylindrical surface having a continuous circular groove to receive a segmented ring which retains said end plug in said pressure vessel; and (d) said end plug having a continuous circular groove to receive an O-ring seal, said continuous circular groove having a ramped bottom and two substantially vertical side walls, and possessing a region to receive said O-ring seal in an essentially uncompressed state and another region to receive said O-ring in a compressed state.
Claim 28
Dependent Claim
15 words
The process of claim 18 wherein said second continuous circular groove contains an O-ring seal.
Claim 29
Dependent Claim
15 words
The process of claim 23 wherein said O-ring seal comprises plastic, rubber or synthetic rubber.
Claim 30
Dependent Claim
50 words
The process of claim 23 wherein a first substantially vertical side wall possesses a dimension approximately equal to the diameter of the transverse cross-section of said O-ring seal and a second substantially vertical side wall possesses a dimension less than the diameter of the transverse cross-section of said O-ring seal.
Claim 31
Dependent Claim
52 words
The process of claim 23 wherein a first substantially vertical side wall possesses a dimension from about 100% to about 175% of the transverse cross-section of said O-ring seal and a substantially vertical side wall possesses a dimension from about 50% to about 100% of the transverse cross-section of said O-ring seal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |