Patent US4359167A successfully refreshed from Google Patents.
US4359167A
Expired / Lapsed
US
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Subterranean plastic tank
Assignee: National City Bank
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Filing: 1980-11-24
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Granted: 1982-11-16
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Expires: 2000-11-24
Abstract
Abstract A corrugated, thin walled plastic tank is ideally suited for subterranean storage and transmission of sewage and other materials. The tank has a bottom wall which terminates in a peripheral edge disposed in a horizontal plane. A corrugated, peripheral wall extends upward from the peripheral edge to an apex area. The corrguations of the peripheral wall include alternating crown and root portions. A peripheral rib extending circumferentially around the peripheral wall is defined by a plurality of rib portions which are disposed in the root portions of the corrugations. Each rib portion has a rib outer portion which is substantially flush with the adjoining crown portions and rib side portions which extend from the rib outer portion into the adjacent root portion. An indentation area is formed by enlarging one of the root portions. An annular sleeve depends from the indentation area into the interior of the tank to provide a fluid access with the interior of the tank. An annular rim is disposed in the apex area surrounding another opening for providing access to the interior of the tank.
Inventors
- 👤 James L. Fouss
- 👤 John J. Parker
- 👤 Donald A. Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:07
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/76; B65D88/02; B65D88/04; Y; Y02; Y02A; Y02A20/00
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
125 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a bottom wall having a peripheral edge disposed generally in a horizontally plane; a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations extending from the bottom wall toward the apex area, the corrugations comprising alternating crown and root portions, a plurality of rib portions disposed in the root portions of the corrugations, each rib portion having an outer portion which is substantially flush with the crown portions and side portions which extend from the outer portion into one of the root portions; and access means for allowing access to the interior of the tank.
Claim 2
Dependent Claim
125 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a bottom wall having a peripheral edge disposed generally in a horizontally plane; a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations extending from the bottom wall toward the apex area, the corrugations comprising alternating crown and root portions, a plurality of rib portions disposed in the root portions of the corrugations, each rib portion having an outer portion which is substantially flush with the crown portions and side portions which extend from the outer portion into one of the root portions; and access means for allowing access to the interior of the tank.
Claim 3
Dependent Claim
26 words
The tank as set forth in claim 1 wherein at least one of the plurality of rib portions is disposed in each of the root portions.
Claim 4
Dependent Claim
23 words
The tank as set forth in claim 2 wherein the plurality of rib portions are disposed in a common plane circumscribing the tank.
Claim 5
Dependent Claim
18 words
The tank as set forth in claim 2 wherein the peripheral wall is arcuate in vertical cross section.
Claim 6
Dependent Claim
21 words
The tank as set forth in claim 4 wherein the vertical cross section is at least partially a substantial circular arc.
Claim 7
Dependent Claim
54 words
The tank as set forth in claim 1 further including a first indentation area located in a first root portion and a second indentation area located in a second root portion, said access means including a fluid inlet opening in the first indentation area and a fluid outlet opening in the second indentation area.
Claim 8
Dependent Claim
18 words
The tank as set forth in claim 1 wherein the peripheral wall is rounded in horizontal cross section.
Claim 9
Dependent Claim
19 words
The tank as set forth in claim 7 wherein the peripheral wall is substantially circular in horizontal cross section.
Claim 10
Dependent Claim
18 words
The tank as set forth in claim 7 wherein the apex area includes a generally horizontal top wall.
Claim 11
Dependent Claim
49 words
The tank as set forth in claim 7 wherein the apex area includes an annular rim, an annular collar depending inward from the annular rim, and an annular wall portion connected with the annular collar, and wherein the access means includes an aperture defined by the annular wall portion.
Claim 12
Dependent Claim
37 words
The tank as set forth in claim 7 wherein the apex area includes an annular rim which is peripherally connected with the peripheral wall and wherein the access means includes a reclosable opening inside the annular rim.
Claim 13
Dependent Claim
25 words
The tank as set forth in claim 7 wherein the bottom wall includes a recessed area and a plurality of projections from the recessed area.
Claim 14
Dependent Claim
29 words
The tank as set forth in claim 1 wherein the tank is elongated in a longitudinal direction and wherein the bottom wall includes means for inhibiting inward arcing movement.
Claim 15
Dependent Claim
29 words
The tank as set forth in claim 13 wherein the tank is elongated in a longitudinal direction and wherein the inward arcing inhibiting means includes a longitudinally extending rib.
Claim 16
Dependent Claim
140 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a generally horizontal bottom wall having a round peripheral edge disposed generally in a horizontal plane, a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations including alterating crown and root portions which extend from the bottom wall toward the apex area, the peripheral wall having a generally rounded horizontal cross section; the apex area including a generally horizontal top wall area; and an enlargement of one of the root portions defining a recessed indentation area integral with the peripheral wall, a sleeve integral with the indentation area to define an access opening, such that the sleeve is disposed below the outer surface of the tank for protection against damage.
Claim 17
Dependent Claim
140 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a generally horizontal bottom wall having a round peripheral edge disposed generally in a horizontal plane, a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations including alterating crown and root portions which extend from the bottom wall toward the apex area, the peripheral wall having a generally rounded horizontal cross section; the apex area including a generally horizontal top wall area; and an enlargement of one of the root portions defining a recessed indentation area integral with the peripheral wall, a sleeve integral with the indentation area to define an access opening, such that the sleeve is disposed below the outer surface of the tank for protection against damage.
Claim 18
Dependent Claim
18 words
The tank as set forth in claim 15 wherein the peripheral wall is arcuate in vertical cross section.
Claim 19
Dependent Claim
30 words
The tank as set forth in claim 16 wherein the rounded horizontal cross section is substantially circular and wherein the arcuate vertical cross section is substantially a circular arc segment.
Claim 20
Dependent Claim
25 words
The tank as set forth in claim 16 wherein the top wall area includes an annular rim connected around its periphery with the peripheral wall.
Claim 21
Dependent Claim
22 words
The tank as set forth in claim 18 further including an aperture disposed in the top wall area inside the annular rim.
Claim 22
Dependent Claim
160 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a generally horizontal bottom wall having a round peripheral edge disposed generally in a horizontal plane, a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall including a plurality of corrugations including alternating crown and root portions which extend from the bottom wall toward the apex area, the peripheral wall having a generally rounded horizontal cross section, the peripheral wall including a peripheral rib extending around the periphery of the tank, the peripheral rib including a plurality of rib portions disposed in the root portions, each rib portion having an outer portion which is substantially flush with the crown portions and having side portions which extend from the outer portion into the adjacent root portion; the apex area including a top wall area; and access means for allowing access to the interior of the tank.
Claim 23
Dependent Claim
160 words
A thin walled plastic tank for subterranean storage and transmission of materials, said tank comprising: a generally horizontal bottom wall having a round peripheral edge disposed generally in a horizontal plane, a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall including a plurality of corrugations including alternating crown and root portions which extend from the bottom wall toward the apex area, the peripheral wall having a generally rounded horizontal cross section, the peripheral wall including a peripheral rib extending around the periphery of the tank, the peripheral rib including a plurality of rib portions disposed in the root portions, each rib portion having an outer portion which is substantially flush with the crown portions and having side portions which extend from the outer portion into the adjacent root portion; the apex area including a top wall area; and access means for allowing access to the interior of the tank.
Claim 24
Dependent Claim
33 words
The tank as set forth in claim 20 wherein the access means includes an indentation area located in one of the root portions and a fluid access opening disposed in the indentation area.
Claim 25
Dependent Claim
30 words
The tank as set forth in claim 21 wherein the fluid access opening is defined by an annular sleeve extending from the indentation area into the interior of the tank.
Claim 26
Dependent Claim
23 words
The tank as set forth in claim 15 wherein the peripheral wall includes a peripheral rib extending around the periphery of the tank.
Claim 27
Dependent Claim
20 words
The tank as set forth in claim 15 wherein the tank has a capacity of between 200 and 400 gallons.
Claim 28
Dependent Claim
118 words
A thin wall plastic tank for subterranean storage and transmission of fluids, said tank comprising: a bottom wall having a peripheral edge disposed generally in a horizontal plane; a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations extending from the bottom wall toward the apex area, the corrugations comprising alternating crown and root portions; and, an enlargement of one of the root portions defining a recessed indentation area integral with the peripheral wall, a sleeve integral with the indentation area to define an access opening, such that the sleeve is disposed below the outer surface of the tank for protection against damage.
Claim 29
Dependent Claim
118 words
A thin wall plastic tank for subterranean storage and transmission of fluids, said tank comprising: a bottom wall having a peripheral edge disposed generally in a horizontal plane; a peripheral wall connected to and extending generally upward from the peripheral edge to an apex area, the peripheral wall having a plurality of corrugations extending from the bottom wall toward the apex area, the corrugations comprising alternating crown and root portions; and, an enlargement of one of the root portions defining a recessed indentation area integral with the peripheral wall, a sleeve integral with the indentation area to define an access opening, such that the sleeve is disposed below the outer surface of the tank for protection against damage.
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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |