US4344543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastic tank
Assignee: JACKEL Inc A CORP OF IN
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Filing: 1980-06-19
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Granted: 1982-08-17
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Expires: 2000-06-19
Abstract
Abstract A reinforced plastic tank and method for producing the same, in which a steel plate base is provided for minimizing the bottom deflection of the tank under hydrostatic pressure when buried under ground. The base has a plate member with an annular flange extending outwardly from the top surface thereof. A plastic cup is disposed within the area surrounded by the flange, and an epoxy adhesive is injected between the cup and the steel plate and flange to adhere the cup to the steel. The side wall of the cup extends past the edge of the flange. The base assembly is then mounted on a mandrel and the fiberglass side wall is formed over the steel flange and the exposed side wall of the cup, and extends from the steel base to the desired height of the tank.
Inventors
- 👤 John J. Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/02; B65D88/06; B65D88/08; B65D90/00; B65D90/02; B65D90/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A reinforced plastic tank comprising a base plate composed of substantially rigid material and extending throughout the bottom of the tank, an annular flange attached to the upper surface of said plate and extending upwardly therefrom, a cup shaped member disposed within said flange, said cup shaped member having a bottom covering the portion of said plate within the area enclosed by said flange and a side wall extending past the upper edge of said flange, and a tank wall of fiberglass covering and seating on the exposed outer surfaces of said flange and the side wall of the cup shaped member, and extending from the upper surface of said plate past said cup side wall to the desired height of said tank.
Claim 2
Dependent Claim
123 words
A reinforced plastic tank comprising a base plate composed of substantially rigid material and extending throughout the bottom of the tank, an annular flange attached to the upper surface of said plate and extending upwardly therefrom, a cup shaped member disposed within said flange, said cup shaped member having a bottom covering the portion of said plate within the area enclosed by said flange and a side wall extending past the upper edge of said flange, and a tank wall of fiberglass covering and seating on the exposed outer surfaces of said flange and the side wall of the cup shaped member, and extending from the upper surface of said plate past said cup side wall to the desired height of said tank.
Claim 3
Dependent Claim
17 words
A reinforced plastic tank as defined in claim 1 in which said substantially rigid material is steel.
Claim 4
Dependent Claim
40 words
A reinforced plastic tank as defined in claim 2 in which an adhesive layer is disposed between said bottom of said cup shaped member and said plate, and between said side wall of said cup shaped member and said flange.
Claim 5
Dependent Claim
16 words
A reinforced plastic tank as defined in claim 3 in which said adhesive is an epoxy.
Claim 6
Dependent Claim
20 words
A reinforced plastic tank as defined in claim 4 in which said plate extends laterally outwardly past said tank wall.
Claim 7
Dependent Claim
31 words
A reinforced plastic tank as defined in claim 5 in which bolts are disposed in said plate and extend through said bottom of said cup for mounting equipment within said tank.
Claim 8
Dependent Claim
40 words
A reinforced plastic tank as defined in claim 1 in which an adhesive layer is disposed between said bottom of said cup shaped member and said plate, and between said side wall of said cup shaped member and said flange.
Claim 9
Dependent Claim
20 words
A reinforced plastic tank as defined in claim 1 in which said plate extends laterally outwardly past said tank wall.
References Cited (Backward Citations)
US2848133A
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US2903877A
Cited
US3025992A
Cited
US3203845A
Cited
US3296802A
Cited
US3368708A
Cited
US3545640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |