Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7234401 | Lock assembly for a gate assembly of a railroad hopper car A lock assembly for a railcar gate assembly including a frame defining a discharge opening, a gate mounted on said frame for sliding movements along a predetermined path of travel between open and closed positions and relative to the discharge opening, and a drive m... | 06/26/2007 |
| 7140303 | Lock assembly for a gate assembly of a railroad hopper car A lock assembly kit including components capable of being assembled to a railcar gate assembly including a frame defining a discharge opening and having a pair of generally parallel, free ended and stationary rigid racks extending from one end of the frame away from... | 11/28/2006 |
| 6899038 | Railroad hopper car discharge gate assembly A discharge gate assembly adapted to be secured in material receiving relation relative to a standard opening toward a bottom of a railroad hopper car. The gate assembly of the present invention satisfies AAR requirements and specifications and includes a rigid fram... | 05/31/2005 |
| 5601032 | Apparatus for opening and closing railroad hopper car discharge doors An apparatus for opening and closing the discharge doors of a railroad hopper car is described comprising a mounting frame secured to the hopper car forwardly of the discharge door and having a pivot frame pivotally secured thereto which is interconnected... | 02/11/1997 |
| 5507235 | Gravity outlet A gravity outlet (10) for discharging lading from a railway car (C). An outlet assembly is attached to a discharge opening in the railcar. The assembly includes an upper end attached to the discharge opening, and sidewalls (14a, 14b) and endwalls (16a, 16... | 04/16/1996 |
| 5488911 | Compactable self-ejecting refuse car A structurally reinforced railroad car is provided which interfaces with the output of a typical refuse compactor and is capable of being thus forcibly filled with compacted refuse which efficiently fills and conforms to the interior, making maximum volum... | 02/06/1996 |
| 5263422 | Protected gate lock for hopper cars Hopper apparatus for controlling the discharge of lading from a hopper of a railway car through an opening in which a door opens and closes the opening and is moved from the closed position to the opening position by rotatable gears and by racks attached ... | 11/23/1993 |
| 4570816 | Hatch cover and locking structure The hatch of a lading container, such as the hopper of a covered hopper car, is sealed by a hatch cover having a locking arrangement which prevents the hatch cover from being blown open by pressure within the hopper when the locking arrangement is unlocke... | 02/18/1986 |
| 4441431 | Railway hatch cover and strap safety tab latching assembly A pivoting hatch cover and strap assembly has an overcenter latch assembly which is pivotably mounted upon the car roof at a location opposite the common hatch cover and strap pivot axis. This latch assembly includes a bifurcated overcenter locking handle... | 04/10/1984 |
| 4235169 | Door locking mechanism for side dump railway hopper cars An open top hopper car particularly adapted to transport logs and pulpwood products includes a car body having a central partition separating the car into a pair of hoppers which are open at their lower ends for discharging materials sideways and downward... | 11/25/1980 |
| 4232989 | Cam actuated railway hopper car door operating mechanism A door operating mechanism for a bottom dump railway hopper car including a plurality of longitudinally mounted, divergently opening discharge doors held in the closed position by a plurality of longitudinally spaced claw-like latches. Each pair of transv... | 11/11/1980 |
| 4224878 | Hopper car door locking mechanism The locking mechanism comprises a clevis arrangement on a hopper door which is engaged by a jaw positioned centrally on a hopper structure. A locking bar is provided which extends to the outer edge of the hopper structure and is connected to rotate with a... | 09/30/1980 |
| 4142751 | Door locking mechanisms for hoppers A door and discharge hopper combination including a locking mechanism which includes a rotatable latch jaw adapted to engage a keeper on the hopper door. The jaw is maintained in a locked position by means of a link and bell crank lever arrangement which ... | 03/06/1979 |
| 4138948 | Railway hopper car side door actuating mechanism A side dump railway hopper car with outwardly movable discharge doors includes a door operating mechanism including pivoted keeper engaging members adapted to be rotated between lock an open positions. The pivoted keeper engaging members are actuated by l... | 02/13/1979 |
| 4136621 | Railway hopper car door locking mechanism A locking arrangement for a hopper door includes a rotatable latch which is pivotally connected to rotate between open and closed positions. The latch is actuated by a link and bell crank lever arrangement which also locks the latch closed in an over-cent... | 01/30/1979 |
| 4051960 | Locking end actuating mechanism for railway hopper car doors A railway hopper car includes side discharge openings and hinged door assemblies which are maintained in a locked position by an improved latching mechanism. The latching mechanism is pivotally connected to car structure and includes a positive lock arran... | 10/04/1977 |
| 3997089 | Sealing hopper closure assembly A discharge gate assembly for sealing and controlling the flow of particulate material from a discharge opening in a hopper of the type used on semi-trailers, railroad cars or storage bins is disclosed wherein the discharge gate assembly comprises a frame... | 12/14/1976 |
| 3958514 | Automatic hopper gate locking mechanism A gravity outlet suitable for hoppers is provided comprising a gate movable back and forth between open and closed positions. A locking shaft is mounted on the gate having handles on at least one side of the outlet and having a locking member preferably h... | 05/25/1976 |
| 3931768 | Hopper vehicle A novel hopper vehicle, illustratively a freight hopper car, has a floor with two longitudinal hoppers and a pair of side-opening doors on opposite sides of the center line of the vehicle. Each door provides a part of one of the hoppers and is pivotally m... | 01/13/1976 |
