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US4015742A Expired / Lapsed US ⏱️ 0.0 years remaining

Anchorage of a lining in a cast iron reactor pressure vessel

Assignee: Hitachi Zosen Inova Steinmueller GmbH
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Filing: 1975-08-18
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Granted: 1977-04-05
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Expires: 1995-08-18
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Abstract

Abstract A anchorage of a lining to a pressure vessel in which T-shaped anchors are connected to the lining. The anchors extend along the longitudinal axes of the cylindrical sections with which the linings are associated. The anchors extend into cutouts in these sections, with clearance provided around the anchors. The spaces between the anchors and the cutout, and between the pressure vessel and the lining, are filled, e.g. with concrete or a mixture of cement with steel balls.

Inventors

  • 👤 Wolfgang Albrecht
  • 👤 Rolf Dorling

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 21:33
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S220/00; Y10S220/901

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 166 words
In combination with a reactor pressure vessel of a nuclear power station having pressure-tight lining composed of individual cylindrical segments: a substantially cylindrical outer cast iron pressure container coaxially surrounding said lining in radially spaced relationship thereto, and composed of individual cast iron segments parallel to the longitudinal axis of said lining, each of said last mentioned segments having a recess, communicating with the space between said lining and said pressure container, a plurality of anchors of a T-shaped cross section respectively arranged in said recesses so that the stem and the transverse bar of said T-shaped cross section are spaced from the walls of the respective recess and the stem of said T-shaped cross section engages the respective adjacent cylindrical segment of said lining and is connected thereto, said anchors being substantially parallel to the longitudinal axis of said lining, and filler material filling the space between said lining and said container and completely surrounding said T-shaped anchors to fill the spaces in said recesses.
Claim 2
Dependent Claim 166 words
In combination with a reactor pressure vessel of a nuclear power station having pressure-tight lining composed of individual cylindrical segments: a substantially cylindrical outer cast iron pressure container coaxially surrounding said lining in radially spaced relationship thereto, and composed of individual cast iron segments parallel to the longitudinal axis of said lining, each of said last mentioned segments having a recess, communicating with the space between said lining and said pressure container, a plurality of anchors of a T-shaped cross section respectively arranged in said recesses so that the stem and the transverse bar of said T-shaped cross section are spaced from the walls of the respective recess and the stem of said T-shaped cross section engages the respective adjacent cylindrical segment of said lining and is connected thereto, said anchors being substantially parallel to the longitudinal axis of said lining, and filler material filling the space between said lining and said container and completely surrounding said T-shaped anchors to fill the spaces in said recesses.
Claim 3
Dependent Claim 15 words
An arrangement in combination according to claim 1, in which said filler material comprises concrete.
Claim 4
Dependent Claim 21 words
An arrangement in combination according to claim 1, in which said filler material comprises a mixture of cement and steel balls.

References Cited (Backward Citations)

US420275A Cited
US638267A Cited
US1993500A Cited
US2955415A Cited
GB1230053A Cited
US3794559A Cited
US3811593A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-04-04 1980-10-04 1981-04-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-04-04 1984-10-04 1985-04-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-04-04 1988-10-04 1989-04-05 $7700.00 Window Closed / Lapsed

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