Patent US4474729A successfully refreshed from Google Patents.
US4474729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support structure for a prestressed cylindrical pressure vessel
Assignee: Hochtemperatur Reaktorbau GmbH
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Filing: 1981-05-07
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Granted: 1984-10-02
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Expires: 2001-05-07
Abstract
Abstract A support structure for a nuclear power station having a prestressed cylindrical vessel comprising an annular ring of supports on a support wall and foundation wherein the prestressed cylindrical vessel rests on the ring of supports is disclosed. The supports, through their defined distances from each other, provide a constant cooling flow of the supports and a constant temperature over the entire operating period of the power station. This results in supports that are maintenance-free. The supports are constructed of plastic washers with steel inserts and are of sufficient height such that in the case of earthquakes, maximum vibrations of the reinforced concrete pressure vessel may be absorbed within an accurately set terminal boundary of the annular support wall.
Inventors
- 👤 Josef Schoening
- 👤 Hans-Georg Schwiers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:48
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/024; E; E04; E04B; E04B1/00; E04B1/36; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A support structure for a prestressed cylindrical vessel of a nuclear power station comprising: a foundation; an annular support wall fixedly mounted on said foundation; and a plurality of support members comprising uniformly spaced composite plastic spacers with steel inserts arranged as individual supports on two horizontal support planes along said annular support wall, said support members in supporting connection with said prestressed cylindrical vessel, said support members on one support plane are disposed at a different level relative to the support members on the other support plane, said support members on their respective support planes form the shape of two concentric discontinuous annuli at a distance from one another to define a cooling gap for circulation of a cooling medium therein.
Claim 2
Dependent Claim
122 words
A support structure for a prestressed cylindrical vessel of a nuclear power station comprising: a foundation; an annular support wall fixedly mounted on said foundation; and a plurality of support members comprising uniformly spaced composite plastic spacers with steel inserts arranged as individual supports on two horizontal support planes along said annular support wall, said support members in supporting connection with said prestressed cylindrical vessel, said support members on one support plane are disposed at a different level relative to the support members on the other support plane, said support members on their respective support planes form the shape of two concentric discontinuous annuli at a distance from one another to define a cooling gap for circulation of a cooling medium therein.
Claim 3
Dependent Claim
20 words
The support structure of claim 1 further comprising a steel casing between said support members and said prestressed cylindrical vessel.
Claim 4
Dependent Claim
21 words
The support structure of claim 1 further comprising a layer of mortar between said support members and said annular support wall.
Claim 5
Dependent Claim
120 words
A support structure for a prestressed cylindrical vessel of a nuclear power station comprising: a foundation; an annular support wall fixedly mounted on said foundation; and a plurality of support members comprising uniformly spaced plastic blocks with steel spacers arranged as individual supports on two horizontal support planes along said annular support wall, said support members in supporting connection with said prestressed cylindrical vessel, said support members on one support plane are disposed at a different level relative to the support members on the other support plane, said support members on their respective support planes form the shape of concentric discontinuous annuli at a distance from one another to define a cooling gap for circulation of a cooling medium therein.
Claim 6
Dependent Claim
120 words
A support structure for a prestressed cylindrical vessel of a nuclear power station comprising: a foundation; an annular support wall fixedly mounted on said foundation; and a plurality of support members comprising uniformly spaced plastic blocks with steel spacers arranged as individual supports on two horizontal support planes along said annular support wall, said support members in supporting connection with said prestressed cylindrical vessel, said support members on one support plane are disposed at a different level relative to the support members on the other support plane, said support members on their respective support planes form the shape of concentric discontinuous annuli at a distance from one another to define a cooling gap for circulation of a cooling medium therein.
Claim 7
Dependent Claim
20 words
The support structure of claim 4 further comprising a steel casing between said support members and said prestressed cylindrical vessel.
Claim 8
Dependent Claim
21 words
The support structure of claim 4 further comprising a layer of mortar between said support members and said annular support wall.
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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) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |