Title:
RAIL CAR DOOR CLOSER
Document Type and Number:
WIPO Patent Application WO2004020234
Kind Code:
A3
Abstract:
A rail car door closer is provided to improve the speed and/or safety with which heavy rail car doors are closed to overcome deficiencies in conventional methods and devices relying on movement of the rail car or manual leverage. The rail car door closer assembly (10) includes a movable base portion having a rotatable member (70) rotationally disposed thereon. The movable base portion is coupled to a drive system (40) configured to translate the movable base portion along a rail or a track (20) disposed adjacent a railroad track rail. Rotatable member (70) is positioned to contact an open rail car door and, upon movement of the movable base portion of the rail car door closer assembly (10) along the track (20) in a closing direction of the door, the door is closed.
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Inventors:
CLARK MELVIN GARY (US)
MARCHIORI DAVID P (US)
MARCHIORI DAVID P (US)
Application Number:
PCT/US2003/026832
Publication Date:
October 07, 2004
Filing Date:
August 28, 2003
Export Citation:
Assignee:
MARTIN MARIETTA MATERIALS SOUT (US)
CLARK MELVIN GARY (US)
MARCHIORI DAVID P (US)
CLARK MELVIN GARY (US)
MARCHIORI DAVID P (US)
International Classes:
B61D7/30; (IPC1-7): B61D3/00
Foreign References:
| US5299508A | 1994-04-05 | |||
| US4011956A | 1977-03-15 | |||
| US5419262A | 1995-05-30 | |||
| US3891101A | 1975-06-24 | |||
| US3836023A | 1974-09-17 |
Other References:
See also references of EP 1542892A4
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