US3906995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank cars
Assignee: Phillips Petroleum Co
•
Filing: 1974-08-14
•
Granted: 1975-09-23
•
Expires: 1994-08-14
Abstract
Abstract Tank cars are constructed so as to permit a series of cars to be loaded and unloaded at a single location. Each car is provided with a standpipe or barrier to form a vertically extending compartment which is connected to the main body of the car by a valve. Conduit means are provided for connecting the compartment of one car with the main body of an adjacent car.
Inventors
- 👤 Thomas W Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:45
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/02; B65D88/022; B65D88/027; B67; B67D; B67D7/00; B67D7/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/8622
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
167 words
A tank car comprising: a tank adapted to contain a liquid to be transported, said tanK having means associated therewith to form a vertically extending compartment which is in communication with the interior of the tank at the top of the compartment so that liquid filling the tank overflows into the compartment when the liquid level in the tank reaches a predetermined height; valve means to establish communication between the bottom of the compartment and the bottom of the interior of the tank when the valve means is open and to block such communication when the valve means is closed, said valve means being moved to the closed position when liquid is placed in the interior of the tank and being moved to the open position when liquid is removed from the interior of the tank and liquid is present in the compartment; and conduit means extending from the bottom of said compartment to a region exterior of said tank adjacent one end of the tank car.
Claim 2
Dependent Claim
167 words
A tank car comprising: a tank adapted to contain a liquid to be transported, said tanK having means associated therewith to form a vertically extending compartment which is in communication with the interior of the tank at the top of the compartment so that liquid filling the tank overflows into the compartment when the liquid level in the tank reaches a predetermined height; valve means to establish communication between the bottom of the compartment and the bottom of the interior of the tank when the valve means is open and to block such communication when the valve means is closed, said valve means being moved to the closed position when liquid is placed in the interior of the tank and being moved to the open position when liquid is removed from the interior of the tank and liquid is present in the compartment; and conduit means extending from the bottom of said compartment to a region exterior of said tank adjacent one end of the tank car.
Claim 3
Dependent Claim
36 words
The tank car of claim 1, further comprising second conduit means extending from the bottom of the interior of the tank to a region exterior of said tank adjacent the second end of the tank car.
Claim 4
Dependent Claim
19 words
The tank car of claim 2, further comprising a valve in said second conduit means exterior of the tank.
Claim 5
Dependent Claim
22 words
The tank car of claim 1 wherein said means to form a vertically extending compartment comprises a standpipe positioned within said tank.
Claim 6
Dependent Claim
31 words
The tank car of claim 1 wherein said means to form a vertically extending compartment comprises a standpipe positioned externally of said tank adjacent said one end of the tank car.
Claim 7
Dependent Claim
35 words
The tank car of claim 1 wherein said means to form a vertically extending compartment comprises a vertically extending baffle positioned within said tank spaced from and adjacent said one end of the tank car.
Claim 8
Dependent Claim
28 words
The tank car of claim 1 wherein said valve means comprises a float-actuated valve adapted to close when the liquid level rises in the interior of the tank.
Claim 9
Dependent Claim
40 words
The tank car of claim 1 wherein said valve means comprises a gravity-actuated valve which normally is closed, but which is opened when the pressure within said compartment exceeds the pressure within the interior of the tank outside the compartment.
Claim 10
Dependent Claim
235 words
Apparatus to transport liquids comprising: first and second tank cars, each tank car including 1 a tank adapted to contain a liquid to be transported, said tank having means associated therewith to form a vertically extending compartment which is in communication with the interior of the tank at the top of the compartment so that liquid filling the tank overflows into the compartment when the liquid level in the tank reaches a predetermined height, 2 valve means to establish communication between the bottom of the compartment and the bottom of the interior of the tank when the valve means is open and to block such communication when the valve means is closed, said valve means being moved to the closed position when liquid is placed in the interior of the tank and being moved to the open position when liquid is removed from the interior of the tank and liquid is present in the compartment, 3 first conduit means extending from the bottom of said compartment to a region exterior of said tank adjacent one end of the tank car, and 4 second conduit means extending from the bottom of the interior of the tank to a region exterior of said tank adjacent the second end of the tank car; and b flexible coupling means connecting the first conduit means of the first tank car to the second conduit means of the second tank car.
Claim 11
Dependent Claim
235 words
Apparatus to transport liquids comprising: first and second tank cars, each tank car including 1 a tank adapted to contain a liquid to be transported, said tank having means associated therewith to form a vertically extending compartment which is in communication with the interior of the tank at the top of the compartment so that liquid filling the tank overflows into the compartment when the liquid level in the tank reaches a predetermined height, 2 valve means to establish communication between the bottom of the compartment and the bottom of the interior of the tank when the valve means is open and to block such communication when the valve means is closed, said valve means being moved to the closed position when liquid is placed in the interior of the tank and being moved to the open position when liquid is removed from the interior of the tank and liquid is present in the compartment, 3 first conduit means extending from the bottom of said compartment to a region exterior of said tank adjacent one end of the tank car, and 4 second conduit means extending from the bottom of the interior of the tank to a region exterior of said tank adjacent the second end of the tank car; and b flexible coupling means connecting the first conduit means of the first tank car to the second conduit means of the second tank car.
Claim 12
Dependent Claim
24 words
The apparatus of claim 9, further comprising a valve in the second conduit means of each of said tank cars exterior of the tank.
References Cited (Backward Citations)
US3675670A
Cited
US3722556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |