US4660336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tank construction
Assignee: Individual
•
Filing: 1985-12-10
•
Granted: 1987-04-28
•
Expires: 2005-12-10
Abstract
Abstract This invention relates to an elevated liquid storage tank and a method of constructing same. An upright, hollow, cylindrical concrete shaft is constructed having a closed upper end portion forming a tank support floor. An upper, outer ledge is formed around the periphery of the shaft adjacent to the tank support floor; and a central, upright access tube is mounted in the tank support floor. An annular, steel tank wall is fabricated around the base of the shaft and hoisted to the top of the shaft using a plurality of jacks. The tank wall includes a lower annular ring beam and the space between the ring beam and the shaft upper end portion is filled with reinforced concrete to connect and retain the tank in position. Roof plates extend between the access tube and the tank wall to close the storage tank roof.
Inventors
- 👤 Laurence G. Cazaly
- 👤 Douglas Lamon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:40
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
130 words
An elevated liquid storage tank comprising: an upright, hollow cylindrical shaft adapted to be anchored to a supporting base foundation, the shaft having an upright wall and a closed upper end portion with a top surface forming a partial tank support floor; the upper end portion having an upper, outer ledge formed around the periphery of the shaft spaced below said top surface; a tank mounted at the top of the shaft, the tank including a wall having a lower annular ring beam attached thereto and forming a lower tank opening; the ring beam having radially inwardly projecting support means, the ring beam and tower upper end portion forming an annular recess; and means filling said recess to connect the tank to the shaft and complete the tank support floor.
Claim 2
Dependent Claim
130 words
An elevated liquid storage tank comprising: an upright, hollow cylindrical shaft adapted to be anchored to a supporting base foundation, the shaft having an upright wall and a closed upper end portion with a top surface forming a partial tank support floor; the upper end portion having an upper, outer ledge formed around the periphery of the shaft spaced below said top surface; a tank mounted at the top of the shaft, the tank including a wall having a lower annular ring beam attached thereto and forming a lower tank opening; the ring beam having radially inwardly projecting support means, the ring beam and tower upper end portion forming an annular recess; and means filling said recess to connect the tank to the shaft and complete the tank support floor.
Claim 3
Dependent Claim
51 words
A storage tank as claimed in claim 1 wherein said support means include vertically disposed knife plates, the ledge having radially disposed outwardly opening recesses formed therein for passing the knife plates vertically through the ledge, and further comprising shim me.mbers spanning said ledge recesses for supporting the knife plates thereon.
Claim 4
Dependent Claim
89 words
A storage tank as claimed in claim 1 wherein the tank wall is formed with an upwardly and outwardly disposed conical floor portion attached to the ring beam, and wherein the partial tank support floor is convex, the angle of inclination of the floor portion and the convexity of the partial tank support floor being such that the thrust from the floor portion and the thrust from the partial tank support floor meet generally at the centre line of the shaft wall when the tank is filled with liquid.
Claim 5
Dependent Claim
52 words
A storage tank as claimed in claim 3 wherein the shaft end portion is formed with an integral, enlarged peripheral thrust ring joining the shaft wall and the being balanced about the centre line of the partial tank support floor to minimize bending stresses in the support floor and the shaft wall.
Claim 6
Dependent Claim
23 words
A storage tank as claimed in claim 2 wherein the shaft is formed of reinforced concrete and the tank is formed of steel.
Claim 7
Dependent Claim
23 words
A storage tank as claimed in claim 4 where the shaft is formed of reinforced concrete and the tank is formed of steel.
Claim 8
Dependent Claim
18 words
A storage tank as claimed in claim 6 wherein the means filling said annular recess is reinforced concrete.
Claim 9
Dependent Claim
18 words
A storage tank as claimed in claim 5 wherein the means filling said annular recess is reinforced concrete.
Claim 10
Dependent Claim
28 words
A storage tank as claimed in claim 7 and further comprising a continuous floor liner overlying the tank support floor and being sealingly joined to the tank wall.
Claim 11
Dependent Claim
29 words
A storage tank as claimed in claim 8 and further comprising a continuous floor liner overlying the complete tank support floor and being sealingly joined to the tank wall.
Claim 12
Dependent Claim
52 words
A storage tank as claimed in claim 8 wherein the tank wall includes an upwardly and outwardly disposed conical floor portion attached to the ring beam, a vertical side wall portion attached to the floor portion and an upwardly and inwardly disposed conical top wall portion attached to the side wall portion.
Claim 13
Dependent Claim
50 words
A storage tank as claimed in claim 11 and further comptising a central vertical access tube mounted in the partial tank support floor for access therethrough, and an annular roof concentrically mounted at the top of the access tube and extending radially, outwardly to join the tank top wall portion.
References Cited (Backward Citations)
US2899820A
Cited
US960666A
Cited
SU661095A1
Cited
DE2838239A1
Cited
US4327531A
Cited
US4312167A
Cited
US4403460A
Cited
US4486989A
Cited
US4486988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |