Patent US3883148A successfully refreshed from Google Patents.
US3883148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer tank
Assignee: Certified Stainless Services Inc
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Filing: 1974-02-11
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Granted: 1975-05-13
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Expires: 1994-02-11
Abstract
Abstract A trailer tank for transporting materials having fluid characteristics, the outer shell of the tank having generally rounded ends, a smooth transition from the rounded ends to a generally elliptical midsection with relatively steep side walls for fast drainage, the bottom section being approximately Vshaped in side elevation and provided with a discharge opening at the lowermost point.
Inventors
- 👤 Norman T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:32
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/22; B60P3/2205; B60P3/221; B65; B65D; B65D88/00; B65D88/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A trailer tank for transporting materials having fluid characteristics comprising: a. an outer shell forming an enclosure for receiving such materials and being formed of side, bottom, top and end walls, said side walls having a radius of curvature in a transverse plane which is greater than the radius of curvature in a transverse plane of said bottom wall and wherein said bottom wall is approximately V-shaped in a longitudinal plane; and b. means forming a discharge opening at the lowermost point of said botTom wall, the transverse cross-sectional-shape of said shell at approximately midpoint along the longitudinal axis thereof being approximately elliptical with the major axis thereof lying in a vertical plane and the eccentricity being such as to provide relatively steep sides for fast drainage.
Claim 2
Dependent Claim
127 words
A trailer tank for transporting materials having fluid characteristics comprising: a. an outer shell forming an enclosure for receiving such materials and being formed of side, bottom, top and end walls, said side walls having a radius of curvature in a transverse plane which is greater than the radius of curvature in a transverse plane of said bottom wall and wherein said bottom wall is approximately V-shaped in a longitudinal plane; and b. means forming a discharge opening at the lowermost point of said botTom wall, the transverse cross-sectional-shape of said shell at approximately midpoint along the longitudinal axis thereof being approximately elliptical with the major axis thereof lying in a vertical plane and the eccentricity being such as to provide relatively steep sides for fast drainage.
Claim 3
Dependent Claim
49 words
A trailer tank as defined by claim 1, wherein the transvere cross-sections of said end walls are approximately circular and wherein successive transverse cross sections of said shell from respective ends to a midpoint along the longitudinal axis vary in a smooth transition from approximately circular to approximately elliptical.
Claim 4
Dependent Claim
19 words
A trailer tank as defined by claim 2, wherein said top wall is approximately straight in a longitudinal plane.
Claim 5
Dependent Claim
37 words
A trailer tank as defined by claim 3, wherein the slope of said bottom wall in a longitudinal plane is a ratio of approximately 11 units in a vertical plane to 27 units in a horizontal plane.
Claim 6
Dependent Claim
73 words
A trailer tank for transporting material having fluid characteristics comprising: an outer shell forming an enclosure for receiving such materials and being formed of side, bottom, top and end walls, and the transverse cross-sectional shape of said shell at approximately midpoint along the longitudinal axis thereof being approximately elliptical with the major axis thereof lying in a vertical plane and the eccentricity being such as to provide relatively steep sides for fast drainage.
Claim 7
Dependent Claim
73 words
A trailer tank for transporting material having fluid characteristics comprising: an outer shell forming an enclosure for receiving such materials and being formed of side, bottom, top and end walls, and the transverse cross-sectional shape of said shell at approximately midpoint along the longitudinal axis thereof being approximately elliptical with the major axis thereof lying in a vertical plane and the eccentricity being such as to provide relatively steep sides for fast drainage.
Claim 8
Dependent Claim
36 words
A trailer tank as claimed in claim 5 wherein successive transverse cross-sections of said shell from respective ends to a midpoint along the longitudinal axis vary in a smooth transition from approximately circular to approximately elliptical.
Claim 9
Dependent Claim
19 words
A trailer tank as claimed in claim 6 wherein the transverse cross-sections of said end walls are approximately circular.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |