Claims
- 1. An outlet gate assembly adapted to be mounted on a hopper container, said assembly comprising:a frame defining a generally rectangular discharge opening; an upper gate assembly mounted on the frame, the upper gate assembly including an upper plate having top and bottom surfaces and an upper rack mounted on the bottom surface of the plate; a lower gate assembly mounted on the frame, the lower gate assembly including a lower plate having top and bottom surfaces and a rack mounted on the top surface of the plate; an upper shaft rotatably mounted on the frame and an upper pinion on the upper shaft and engaging the upper rack; a lower shaft rotatably mounted on the frame and a lower pinion on the lower shaft and engaging the lower rack; said upper plate being movable between open and closed positions by rotating said upper shaft; said lower plate being movable between open and closed positions by rotating the lower shaft; wherein the outlet gate assembly has a cavity below the bottom surface of the upper plate of the upper gate assembly and above at least part of the top surface of the lower gate assembly when the upper and lower plates are in the closed positions; wherein at least part of said upper rack is within said cavity when the upper plate is in the closed position; and wherein all of said lower rack is outside of said cavity when the lower plate is in the closed position and when the lower plate is in the open position.
Parent Case Info
This is a divisional of U.S. patent application Ser. No. 09/1718,913, filed on Nov. 22, 2000 and entitled “Railway Car Outlet Gate Assembly”, now abandoned; which is a continuation-in-part of U.S. patent application Ser. No. 09/166,675, filed on Oct. 5, 1998 and entitled “Railway Car Outlet Gate Assembly, now U.S. Pat. No. 6,286,437, the complete disclosure of which is incorporated by reference herein.
US Referenced Citations (37)
Non-Patent Literature Citations (5)
Entry |
Keystone Railway Equipment Company, Drawing SE-6286, dated Nov. 19, 1996, Exhibit A. |
Keystone Railway Equipment Company, Drawing SE-17071, dated Nov. 20, 1997, Exhibit B. |
Keystone Railway Equipment Company, Drawing SE-16236, dated Feb. 9, 1995, Exhibit C. |
Keystone Railway Equipment Company, Drawing SE-16231, dated May 6, 1995, Exhibit D. |
Keystone Railway Equipment Company, Drawing SE-17550, dated Feb. 25, 1997, Exhibit E. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09/166675 |
Oct 1998 |
US |
Child |
09/718913 |
|
US |