US3893270A
Expired / Lapsed
US
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Pressure vessel
Assignee: Poll Andres V D
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Filing: 1973-10-25
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Granted: 1975-07-08
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Expires: 1993-10-25
Abstract
Abstract A containment structure constructed in accordance with the features of this invention comprises an upstanding walled body which is formed of concrete and which includes an integral generally cylindrically-shaped member and an integral generally hemispherically-shaped closure member. A plurality of elongated prestressing tendons is provided each of which extends continuously throughout the length of the body within the wall of the body between first and second anchor locations which are positioned at a same general longitudinal location. The tendons extend in a helical path through the walls of the cylindrical segment and form an angle with the horizontal of between about 35*-55* and extend through an arc through the hemispherical segment.
Inventors
- 👤 Morris Schupack
- 👤 Der Poll Andres Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:02
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/08; G21C13/093; G21C13/0933; E; E04; E04B; E04B1/00; E04B1/16; E04B1/166; E04B1/32; E04B2001/3258; E04B2001/3264; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
143 words
A containment structure comprising: an upstanding walled body formed of concrete and having a longitudinal axis thereof; said body including an integrally formed generally cylindricalshaped member and an integrally formed generally hemispherically-shaped closure member; a plurality of elongated prestressing tendons extending through the length of the body within the wall of the body between first and second anchor location which are positioned at a same general longitudinal location along the cylindrical member of said structure; each of said tendons including a first integral segment which extends along a left-hand helical path through said cylindrical body member, a second integral segment which extends along a right-hand helical path through said cylindrical body member, and an arcuate integral segment extending between said first and second members, said tendon segments extending in helical paths which form an angle with the horizontal of between 35* and 55*.
Claim 2
Dependent Claim
143 words
A containment structure comprising: an upstanding walled body formed of concrete and having a longitudinal axis thereof; said body including an integrally formed generally cylindricalshaped member and an integrally formed generally hemispherically-shaped closure member; a plurality of elongated prestressing tendons extending through the length of the body within the wall of the body between first and second anchor location which are positioned at a same general longitudinal location along the cylindrical member of said structure; each of said tendons including a first integral segment which extends along a left-hand helical path through said cylindrical body member, a second integral segment which extends along a right-hand helical path through said cylindrical body member, and an arcuate integral segment extending between said first and second members, said tendon segments extending in helical paths which form an angle with the horizontal of between 35* and 55*.
Claim 3
Dependent Claim
37 words
The containment structure of claim 1 wherein the paths of the left and right-hand helical segments cross at a same azimuthal location within the cylinder wall and are spaced apart along a radius of the cylindrical member.
Claim 4
Dependent Claim
35 words
The containment structure of claim 2 wherein all of said left-hand helical segments are positioned at an inner radial location or at an outer radial location with respect to all of said right-hand helical segments.
Claim 5
Dependent Claim
76 words
The containment structure of claim 2 wherein said tendons are arranged into a plurality of groups, each of said groups includes a plurality of tendons having left and right-hand helical segments wherein the left-hand helical segments are symmetrically arranged about an axis of the structure with respect to said right-hand helical segments of the same tendons and said symmetrically arranged left and right-hand helical segments are interconnected by corresponding arcuate segments extending through the closure member.
Claim 6
Dependent Claim
76 words
The containment structure of claim 4 wherein said plurality of tendons are arranged in two pairs of families, and wherein each of the left-hand helical segments of the tendons of a family in a pair is arranged symmetrically about an axis of the structure with respect to the right-hand helical segment of the tendons of the same family of the pair, and pairs of said families are symmetrically arranged about mutually perpendicular axes of the structure.
Claim 7
Dependent Claim
35 words
The containment structure of claim 5 wherein all of said left-hand helical segments are positioned at an inner radial location or at an outer radial location with respect to all of said right-hand helical segments.
Claim 8
Dependent Claim
13 words
The containment structure of claim 2 wherein six families of tendons are provided.
Claim 9
Dependent Claim
42 words
The containment structure of claim 5 wherein the path of each family or tendons in a pair overlaps the path of another family in the same pair for at least a portion of the extension of the paths in the closure member.
Claim 10
Dependent Claim
50 words
The containment structure of claim 8 wherein the tendons in a family of a second pair overlap the tendons of another family in the same pair for at least a portion of the extension of the tendons through the closure member, and said pairs are arranged about mutually perpendicular axis.
Claim 11
Dependent Claim
49 words
The containment structure of claim 9 wherein substantially all of said left-hand helical extending tendons are located at a substantially same radial location and all of said right-hand helical extending tendons are located at substantially a same radial location which differs from the radial location of said left-hand tendons.
Claim 12
Dependent Claim
110 words
The containment structure of claim 3 wherein said tendons are arranged into a plurality of families, each of said families includes a plurality of tendons having left and right-hand helical segments, said families being arranged in pairs, each of said families extending through said closure member at a differing radial location, said pairs of families formed by said families at adjacent radial locations, the left-hand helical extending tendons of each pair extending into the wall of said cylindrical body member at substantially the same radial location and the right-hand extending helical tendons of each pair extending into the wall of said cylindrical body member at a second differing radial location.
Claim 13
Dependent Claim
69 words
The nuclear containment structure of claim 11 including a gas or liquid impermeable liner body positioned within said structure and wherein said liner conforms to the inner surface of said structure and includes a plurality of studs which are anchored to said liner and which extend in a direction generally perpendicular to the surface of the liner, and means are provided for securing said tendon conduits to said studs.
Claim 14
Dependent Claim
34 words
The nuclear containment structure of claim 12 wherein a first, relatively thin, wall stiffening layer of concrete is formed along a surface of said liner and is secured to said liner by said studs.
Claim 15
Dependent Claim
59 words
The nuclear containment structure of claim 13 including a plurality of vertically extending concrete reinforcing rods positioned within said wall near an outer surface thereof, said rods being secured in position prior to placing of concrete for the wall thickness of the structure by means which secure said vertically extending rods to said studs which extend from said liner.
Claim 16
Dependent Claim
25 words
The nuclear containment structure of claim 1 wherein said helical tendon segments of said elongated tendons form an angle of about 45* with the horizontal.
Claim 17
Independent Claim
187 words
A method of erecting a pressure vessel comprising the steps of: assembling a plurality of elongated prestressing tendon conduits in an array wherein each of the tendons in said array extends from an anchor location at a first end of the structure successively in a helical path forming an angle of between about 35*-55* with the horizontal to a second end at an upper elevation of the structure, successively in a path defined by an arc in a closure member of the structure and successively in a helical path forming an angle of between about 35*-55* with the horizontal to said first end of said structure at which location each of the ends of said elongated tendon is anchored and at which end said tendons are stressed; casting about said tendon array a concrete body having a wall thickness and including a cylindrically shaped member which is closed at said second end by a generally hemispherically shaped member; passing an elongated tendon into each of said conduits; anchoring said tendons at said first end of said structure; and, applying to each of said tendons a prestressing force.
Claim 18
Independent Claim
187 words
A method of erecting a pressure vessel comprising the steps of: assembling a plurality of elongated prestressing tendon conduits in an array wherein each of the tendons in said array extends from an anchor location at a first end of the structure successively in a helical path forming an angle of between about 35*-55* with the horizontal to a second end at an upper elevation of the structure, successively in a path defined by an arc in a closure member of the structure and successively in a helical path forming an angle of between about 35*-55* with the horizontal to said first end of said structure at which location each of the ends of said elongated tendon is anchored and at which end said tendons are stressed; casting about said tendon array a concrete body having a wall thickness and including a cylindrically shaped member which is closed at said second end by a generally hemispherically shaped member; passing an elongated tendon into each of said conduits; anchoring said tendons at said first end of said structure; and, applying to each of said tendons a prestressing force.
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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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |