Patent US3889836A successfully refreshed from Google Patents.
US3889836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for constructing large tanks
Assignee: INTERNATIONAL LIGHT METALS Corp
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Filing: 1972-01-07
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Granted: 1975-06-17
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Expires: 1992-01-07
Abstract
Abstract The invention relates to a method of constructing large stationary cylindrical tanks using novel means for butt-welding together the horizontal joints of the cylindrical side walls of the tank. The novel means are flexible connector seals adapted to fit between the joints, and flexible portions of the seals are welded to the adjacent inner vertical surfaces of the side walls. Flexible connector seals are also provided for welding the bottom perimeter of the tank to the bottom edge of the cylindrical side wall.
Inventors
- 👤 Paul E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:09
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/06; F; F17; F17C; F17C1/00; F17C1/14; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2201/0123; F17C2201/05; F17C2201/052; F17C2201/054; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0617; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/228; F17C2223/00; F17C2223/03; F17C2223/035; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A stationary tank comprising a cylindrical vertical wall, a bottom, and a dome, said cylindrical wall comprising a plurality of vertical cylindrical shells comprising horizontal joints between the top and bottom edges of adjacent shells, strips of connector seal means within said joints, said seal means comprising a metal strip having in cross-section outer and inner sleeve means with neck means therebetween, said neck means disposed between said top and bottom edges of adjacent shells, said inner sleeve means comprising upper and lower leg means wherein the end of each leg means is welded circumferentially to respective inner walls of said adjacent shells, at least one of said leg means being flexible and curved thereby defining a pocket between said curved leg means and a said inner wall, and a sealing material disposed within said pocket.
Claim 2
Dependent Claim
136 words
A stationary tank comprising a cylindrical vertical wall, a bottom, and a dome, said cylindrical wall comprising a plurality of vertical cylindrical shells comprising horizontal joints between the top and bottom edges of adjacent shells, strips of connector seal means within said joints, said seal means comprising a metal strip having in cross-section outer and inner sleeve means with neck means therebetween, said neck means disposed between said top and bottom edges of adjacent shells, said inner sleeve means comprising upper and lower leg means wherein the end of each leg means is welded circumferentially to respective inner walls of said adjacent shells, at least one of said leg means being flexible and curved thereby defining a pocket between said curved leg means and a said inner wall, and a sealing material disposed within said pocket.
Claim 3
Dependent Claim
14 words
The stationary tank of claim 1 wherein an O-ring is disposed in said pocket.
Claim 4
Dependent Claim
15 words
The stationary tank of claim 1 wherein a caulking compound is disposed in said pocket.
References Cited (Backward Citations)
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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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |