US4717285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cistern for liquid or gas, constructed of reinforced concrete
Assignee: Neste Oyj
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Filing: 1984-09-05
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Granted: 1988-01-05
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Expires: 2004-09-05
Abstract
Abstract The invention concerns a cistern structure intended to be used as a subterranean cistern. The shell of the cistern has been formed of a material impermeable to the substance to be stored therein. The shell of the cistern has been encircled with mutually spaced annular juncture elements (13). The juncture elements (13) have been provided with anchoring elements (14) by the aid of which the cistern has been anchored in the rock or soil. The shell of the cistern is supported by a supporting layer in concrete construction, and the shell consists of sheet steel (12). The shell of the cistern is advantageously composed of element-designed components (11). The element-designed components (11) one upon the other have been joined to become a compound structure, with the aid of a juncture element (13). The juncture element (13) is advantageously a concrete ring cast on site. The space between juncture elements (13) is filled with an intermediate material (15), such as sand, gravel, light-weight gravel or thermal lagging.
Inventors
- 👤 Jorma Pulkkinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/18; E04H7/20
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
96 words
A cistern structure for use as a subterranean cistern, comprising: a shell forming an inner surface of said cistern structure and formed of a material impermeable to substance to be stored therewithin; a plurality of mutually-spaced, annular juncture elements, encircling said shell; at least one anchoring element provided in each juncture element for anchoring said cistern structure into surrounding rock or soil; a plurality of structural elements arranged one above the other and joined with said annular juncture elements to form a compound structure; and an intermediate layer of material situated between said mutually-spaced juncture elements.
Claim 2
Dependent Claim
96 words
A cistern structure for use as a subterranean cistern, comprising: a shell forming an inner surface of said cistern structure and formed of a material impermeable to substance to be stored therewithin; a plurality of mutually-spaced, annular juncture elements, encircling said shell; at least one anchoring element provided in each juncture element for anchoring said cistern structure into surrounding rock or soil; a plurality of structural elements arranged one above the other and joined with said annular juncture elements to form a compound structure; and an intermediate layer of material situated between said mutually-spaced juncture elements.
Claim 3
Dependent Claim
13 words
The combination of claim 1, wherein said juncture elements are formed of concrete.
Claim 4
Dependent Claim
11 words
The combination of claim 1, wherein said shell is a sheet.
Claim 5
Dependent Claim
12 words
The combination of claim 3, wherein said shell is a steel sheet.
Claim 6
Dependent Claim
13 words
The combination of claim 1, wherein said shell is formed of reinforced plastic.
Claim 7
Dependent Claim
11 words
The combination of claim 1, wherein said juncture elements are ring-shaped.
Claim 8
Dependent Claim
21 words
The combination of claim 1, wherein said annular juncture elements and said structural elements are alternately arranged in said compound structure.
Claim 9
Dependent Claim
14 words
The combination of claim 2, wherein each said juncture element is a concrete ring.
Claim 10
Dependent Claim
17 words
The combination of claim 8, wherein said concrete rings are cast on construction of said cistern structure.
Claim 11
Dependent Claim
43 words
The combination of claim 8, additionally comprising a plurality of anchoring elements anchoring each said juncture element into the surrounding rock or soil, at given points, and with said juncture elements being thermally insulated at the remaining locations from the rock or soil.
Claim 12
Dependent Claim
19 words
The combination of claim 1, additionally comprising thermal lagging insulating each said juncture element from the rock or soil.
Claim 13
Dependent Claim
11 words
The combination of claim 1, wherein said intermediate layer is water-permeable.
Claim 14
Dependent Claim
13 words
The combination of claim 1, wherein said intermediate layer is a thermal-insulating layer.
Claim 15
Dependent Claim
12 words
The combination of claim 1 wherein said anchoring elements are steel bolts.
Claim 16
Dependent Claim
24 words
The combination of claim 14, wherein said steel bolts extend into the rock or soil substantially perpendicularly to a plane of said inner surface.
Claim 17
Dependent Claim
17 words
The combination of claim 12, wherein the material of said intermediate layer is sand, gravel, or soil.
Claim 18
Dependent Claim
20 words
The combination of claim 13, wherein the material of said intermediate layer is polyurethane, light-weight gravel, concrete, or foamed glass.
Claim 19
Dependent Claim
13 words
The combination of claim 2, wherein said juncture elements are reinforced with steel.
Claim 20
Dependent Claim
13 words
The combination of claim 1, wherein said structural elements are reinforced with steel.
Claim 21
Dependent Claim
16 words
The combination of claim 1, wherein said structural elements are formed of concrete reinforced with steel.
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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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |