Patent US4159781A successfully refreshed from Google Patents.
US4159781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber reinforced thermosetting resin tank for processing olives
Assignee: Fluid Containment Inc
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Filing: 1978-07-10
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Granted: 1979-07-03
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Expires: 1998-07-10
Abstract
Abstract An upper tank half provided with a manway and a lower tank half provided with a sump are each formed of thermosetting resin reinforced with chopped glass fiber strands and then secured together with several plys of resin-impregnated glass mat applied around the circumference at the joint inside and outside of the tank. Each tank half is flared adjacent the joint to provide half of a tank strengthening rib for the completed tank, which has a diameter larger than its height. Two semicircular perforated olive retaining plates are removably mounted in the upper tank half adjacent the lower end of the manway. Aboveground and underground embodiments of the tank are provided.
Inventors
- 👤 David H. Bartlow
- 👤 Robert M. Sommerkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:35
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/10; B65D88/00; B65D88/02; B65D90/02; B65D90/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A glass fiber reinforced thermosetting resin olive processing tank comprising upper and lower tank halves each including a generally cylindrical portion and a generally spherical portion, the cylindrical portions being joined together and the spherical portions respectively forming the top and bottom of the tank, the upper spherical portion being provided with an upwardly convergent frustoconical manway, and a pair of perforated semicircular olive retaining plates removably mounted in the upper tank half adjacent the lower end of the manway with straight peripheral edge portions thereof abutting each other.
Claim 2
Dependent Claim
89 words
A glass fiber reinforced thermosetting resin olive processing tank comprising upper and lower tank halves each including a generally cylindrical portion and a generally spherical portion, the cylindrical portions being joined together and the spherical portions respectively forming the top and bottom of the tank, the upper spherical portion being provided with an upwardly convergent frustoconical manway, and a pair of perforated semicircular olive retaining plates removably mounted in the upper tank half adjacent the lower end of the manway with straight peripheral edge portions thereof abutting each other.
Claim 3
Dependent Claim
28 words
A tank as claimed in claim 1 wherein each of the cylindrical portions is flared adjacent the joint to provide half of a strengthening rib for the tank.
Claim 4
Dependent Claim
57 words
A tank as claimed in claim 1 wherein the radius of curvature of the spherical portions is substantially equal to the diameter of the cylindrical portions and the height of each of the spherical portions is less than a fifth of its radius of curvature and substantially equal to the height of each of the cylindrical portions.
Claim 5
Dependent Claim
17 words
A tank as claimed in claim 1 wherein the lower spherical portion is provided with a sump.
Claim 6
Dependent Claim
32 words
A tank as claimed in claim 1 wherein the lower spherical portion is provided with thickened glass mat reinforced bearing portions for cooperative engagement with concrete mounting cradles in an aboveground installation.
Claim 7
Dependent Claim
21 words
A tank as claimed in claim 1 including a domed manway cover having a sleeve portion for guiding a float rod.
Claim 8
Dependent Claim
35 words
A tank as claimed in claim 1 wherein the junction of the upper spherical portion and the manway includes a sleeve portion and a shoulder portion forming a partial housing for the olive retaining plates.
Claim 9
Dependent Claim
31 words
A tank as claimed in claim 1 wherein each semicircular olive retaining plate is provided with a pair of eyebolts and suspended thereby from an upper edge portion of the manway.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |