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US3667400A
Expired / Lapsed
US
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Railway ballast distributing car door assembly
Assignee: Individual
•
Filing: 1970-11-03
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Granted: 1972-06-06
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Expires: 1990-11-03
Abstract
Abstract A terracing door assembly for a railway hopper car having an outer door which also functions as a chute and an inner ballast flow control door. A mechanism is provided to lock the outer door in its closed position and also in several lowered and open positions. The inner ballast flow control door may be opened to a variety of positions ranging from fully closed to fully opened and may be locked in these positions by means of a sliding locking bar whose ends ride in guides located on opposite sides of the ballast discharge opening. A tool is provided for opening and closing the inner ballast flow control door.
Inventors
- 👤 Sergio Rene Damy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:10
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
A ballast flow control door assembly for a terracing outlet of a hopper car of the type in which the terracing outlet includes a frame installed in a discharge chute of the hopper car, a door pivotally mounted to the bottom of said frame for movement from an upstanding position in which it closes said opening to lowered positions in which said door functions as a chute for said opening, said ballast flow control door assembly including: a pair of guides mounted on opposite sides of said frame, a ballast flow control door pivotally mounted to the top of said frame for outward opening movement relative thereto with said pivotal mounting located inwardly of said guides, and a locking bar extending across the width of and mounted on said door for sliding movement from the top to the bottom thereof, said locking bar having end portions positioned in said guides to operate the door.
Claim 2
Dependent Claim
154 words
A ballast flow control door assembly for a terracing outlet of a hopper car of the type in which the terracing outlet includes a frame installed in a discharge chute of the hopper car, a door pivotally mounted to the bottom of said frame for movement from an upstanding position in which it closes said opening to lowered positions in which said door functions as a chute for said opening, said ballast flow control door assembly including: a pair of guides mounted on opposite sides of said frame, a ballast flow control door pivotally mounted to the top of said frame for outward opening movement relative thereto with said pivotal mounting located inwardly of said guides, and a locking bar extending across the width of and mounted on said door for sliding movement from the top to the bottom thereof, said locking bar having end portions positioned in said guides to operate the door.
Claim 3
Dependent Claim
42 words
The ballast flow control door assembly of claim 1 further characterized in that said discharge chute door is adjustable to a plurality of lowered positions and means are provided to selectively lock said discharge chute door selectively in each of said positions.
Claim 4
Dependent Claim
54 words
The ballast flow control door assembly of claim 1 further characterized in that said guides are inclined to the vertical and the upper portions of said guides are located outwardly of the pivotal mounting of said ballast flow control door and the lower portion of said guides are located inwardly of said pivotal mounting.
Claim 5
Dependent Claim
37 words
The ballast flow control door assembly of claim 1 further characterized in that said control bar is affixed to a slide plate and said slide plate is dovetailed in a channel in said ballast flow control door.
References Cited (Backward Citations)
US1689806A
Cited
US1743579A
Cited
US1732545A
Cited
US1823029A
Cited
US1854799A
Cited
US2555173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |