US4318349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car end doors
Assignee: Pullman Standard Inc
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Filing: 1980-01-14
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Granted: 1982-03-09
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Expires: 2000-01-14
Abstract
Abstract An auto railway car having a plurality of decks is provided with a pair of folding door structures for closing the loading end of the car. The doors are hinged on spherical bearing structures and include locking mechanisms for locking the doors in open or closed positions.
Inventors
- 👤 Felixberto A. Galasan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:45
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/06; B60; B60P; B60P3/00; B60P3/06; B60P3/08; B61D19/00; B61D3/00; B61D3/02; B61D3/16; B61D3/18; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/0867; Y10T292/0868
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
In a railway car having a body including side walls and a roof structure, said body having a loading end and lower and upper cargo supporting decks adapted to be loaded with cargo through said loading end, a door arrangement including a door panel assembly hingedly connected to one of said side walls and adapted to be moved between open and closed positions relative to said loading end, the improvement of a locking mechanism for said door panel assembly comprising; a latch member supported on said door panel assembly for rotation and vertical reciprocating movement, a keeper member on said loading end including a latch receiving portion having a vertical slot, said vertical slot including a vertical recess communicating with said slot, said latch member being movable downwardly into engagement with said keeper member and rotatable in said vertical slot to a locking position, said latch member including an indexing member adapted to be moved through said vertical slot to engage said keeper member in locking relation upon rotation of said latch member, and means between said door panel assembly and said latch member operable during rotation of said latch member on said keeper member for raising said door and supporting the same on said keeper member.
Claim 2
Dependent Claim
207 words
In a railway car having a body including side walls and a roof structure, said body having a loading end and lower and upper cargo supporting decks adapted to be loaded with cargo through said loading end, a door arrangement including a door panel assembly hingedly connected to one of said side walls and adapted to be moved between open and closed positions relative to said loading end, the improvement of a locking mechanism for said door panel assembly comprising; a latch member supported on said door panel assembly for rotation and vertical reciprocating movement, a keeper member on said loading end including a latch receiving portion having a vertical slot, said vertical slot including a vertical recess communicating with said slot, said latch member being movable downwardly into engagement with said keeper member and rotatable in said vertical slot to a locking position, said latch member including an indexing member adapted to be moved through said vertical slot to engage said keeper member in locking relation upon rotation of said latch member, and means between said door panel assembly and said latch member operable during rotation of said latch member on said keeper member for raising said door and supporting the same on said keeper member.
Claim 3
Dependent Claim
17 words
The door arrangement in accordance with claim 1, said keeper member being supported on said lower deck.
Claim 4
Dependent Claim
28 words
The door arrangement in accordance with claim 1, said latch member comprising a plunger and said indexing member comprising a transverse projecting pin vertically movable in said recess.
Claim 5
Dependent Claim
176 words
In a railway car having a body including side walls and a roof structure, said body having a loading end and lower and upper cargo supporting decks adapted to be loaded with cargo through said loading end, a door arrangement including a door panel assembly hingedly connected to one of said side walls and adapted to be moved between open and closed positions relative to said loading end, the improvement of a locking mechanism for said door panel assembly comprising: a latch member supported on said door panel assembly comprising bracket means supporting a plunger for rotation and vertical reciprocating movement, a keeper member on said loading end including a latch receiving portion, including a vertical slot, an index member on said plunger movable downwardly through said vertical slot to engage said keeper member in locking relation upon rotation of said plunger, and means between said door panel assembly and said latch member operable during rotation of said latch member on said keeper member for raising said door and supporting the same on said keeper member.
Claim 6
Dependent Claim
176 words
In a railway car having a body including side walls and a roof structure, said body having a loading end and lower and upper cargo supporting decks adapted to be loaded with cargo through said loading end, a door arrangement including a door panel assembly hingedly connected to one of said side walls and adapted to be moved between open and closed positions relative to said loading end, the improvement of a locking mechanism for said door panel assembly comprising: a latch member supported on said door panel assembly comprising bracket means supporting a plunger for rotation and vertical reciprocating movement, a keeper member on said loading end including a latch receiving portion, including a vertical slot, an index member on said plunger movable downwardly through said vertical slot to engage said keeper member in locking relation upon rotation of said plunger, and means between said door panel assembly and said latch member operable during rotation of said latch member on said keeper member for raising said door and supporting the same on said keeper member.
Claim 7
Dependent Claim
17 words
The door arrangement in accordance with claim 4, said keeper member being supported on said lower deck.
Claim 8
Dependent Claim
53 words
The door arrangement in accordance with claim 4, first cam means on said bracket, second cam means on said plunger engaging said first cam means, said second cam means, during rotation of said plunger to a locking position with said keeper urging said door upwardly whereby said door is supported on said keeper.
Claim 9
Dependent Claim
36 words
The door arrangement in accordance with claim 4, said bracket means including means cooperable with said plunger during rotation thereof to raise said door and support the same in said raised position by said keeper member.
Claim 10
Dependent Claim
28 words
The door arrangement in accordance with claim 7, said plunger including spring biasing means for urging said keeper member to an unlocking raised position above said keeper member.
Claim 11
Dependent Claim
21 words
The door arrangement in accordance with claim 7, said means for raising said door including a cam associated with said plunger.
References Cited (Backward Citations)
US711164A
Cited
US1003642A
Cited
US952411A
Cited
US1548907A
Cited
US2223275A
Cited
US2886105A
Cited
US3191547A
Cited
US3298728A
Cited
US3938446A
Cited
US3996860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |