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| Number | Title | Issue Date |
| 7159949 | Dump door open/close system A debris container of the type used on roadway and pavement sweeper and sweeping vehicles includes a hinged door through which the interior of the debris container may be inspected and through which debris is emptied when the container is elevated and rotated to its... | 01/09/2007 |
| 7093544 | Control device for a railroad car Pivotally mounted doors forming the floor of a railroad car are prevented from opening inadvertently through not allowing air pressure to be applied to a door opening piston until the air pressure exceeds a predetermined amount. ... | 08/22/2006 |
| 7093682 | Multi-combination vehicle incorporating a power trailer A multi-combination vehicle or road-train consisting of a powered prime mover, at least one powered trailer and which may include a number of non-powered trailers. The powered trailer includes a cooling system separated from the engine to provide improved cooling an... | 08/22/2006 |
| 6966609 | Apparatus for operating commodity trailer hopper trap doors An apparatus for operating first and second commodity trailer hopper trap doors is provided that includes a support frame extending between first and second ends, first and second driveshaft assemblies attached at each end of the support frame, a motor assembly atta... | 11/22/2005 |
| 6957868 | Bottom dump farm cart A bottom dump trailer cart which includes a cargo compartment having a floor equipped with downwardly pivoting dumping panels is constructed such that the panels protect the wheels from the dumped cargo. The cart is capable of riding over the dumped cargo because of... | 10/25/2005 |
| 6749268 | Closing apparatus for twin pendulum hopper doors A pneumatic closing apparatus suitable for metering grain or other material gravity discharged by twin pendulum hopper doors from a hopper trailer. The closing apparatus includes a bidirectional pneumatic cylinder that operates a linkage assembly controlling the doo... | 06/15/2004 |
| 6416133 | Control device for trailer gates A conventional dump trailer includes discharge members or doors which are typically mounted beneath the trailer. The movement of the doors is controlled by a control device of the present invention having a position sensor which is mounted on the trailer ... | 07/09/2002 |
| 5606916 | Hopper door operating mechanism A hopper door operating mechanism includes an arcuate closing plate mounted on an internal shaft pivotably connected to the frame of the hopper door. An operating crank has one end connected to the internal shaft and the other end pivotably connected to a... | 03/04/1997 |
| 5549359 | Dual use materials transport vehicle with end-dumping and improved belly-dumping capabilities and method of construction A dual use belly-dumping and end-dumping vehicle includes a frame mounted on wheels for transport and a pivotable hopper carried in the frame. The hopper is provided with angled side walls and end walls defining a top opening and a bottom opening. A pair ... | 08/27/1996 |
| 5431481 | Side dumping trailer A truck trailer useful for carrying road surfacing material such as gravel, crushed rock, limestone or the like. A feature of the trailer is that it empties to the side of the trailer and directly from the bottom. Doors on the side separately operable fac... | 07/11/1995 |
| 5359942 | Remote control positioning system for controlling hopper doors A positioning system for remote operation of hopper doors of a railway car is provided including a radio frequency controller and a hydraulic drive system. The positioning system for each hopper car is supplied with pneumatic power from the locomotive. Pn... | 11/01/1994 |
| 5324097 | Bottom dump trailer A conventional bottom dump truck includes doors which in a closed position are suspended underneath the bottom opening of the hopper of the trailer. The doors are opened outwardly and upwardly by pivotal action about an upper suspension point of each of t... | 06/28/1994 |
| 5294186 | Bottom dump trailer A conventional bottom dump truck includes doors which in a closed position are suspended underneath the bottom opening of the hopper of the trailer. The doors are opened outwardly and upwardly by pivotal action about an upper suspension point of each of t... | 03/15/1994 |
| 5284097 | Ballast distribution, regulation and reclaiming railroad maintenance device A railroad maintenance device distributes, regulates and reclaims ballast along a railway road bed. The device includes one or more hopper cars for transporting and depositing ballast, a regulating car including a track regulator, a shoulder regulator, an... | 02/08/1994 |
| 5205696 | Dumping system for a kiln floor A dumping system for a kiln floor having a pnematic cylinder to cause a plurality of rows of tray assemblies to move between a closed postion and an open position. A harmonizing bar assembly is connected to the rows of tray assemblies and acts to synchron... | 04/27/1993 |
| 5131722 | Bottom dump trailer having an adjustable discharge opening A conventional bottom dump truck includes doors which in a closed position are suspended underneath the bottom opening of the hopper of the trailer. The doors are opened outwardly and upwardly by pivotal action about an upper suspension point of each of t... | 07/21/1992 |
| 4844292 | Mechanism for actuating an opening and shut-off valve A valve actuating device for a hopper is comprised of two spherical shaped shutters or registers which pivot about common suspension axles. Each of the registers is carried by two pairs of arms located on either side of the bottom of the hopper and is cap... | 07/04/1989 |
| 4326750 | Gate assembly and control assembly therefor An improved gate assembly and gate control assembly for operatively controlling the movement of the gate assembly in material discharging equipment is provided wherein the gate assembly comprises a first and second clamshell gate member, a connecting asse... | 04/27/1982 |
| 4106813 | Bottom dump door linkage apparatus and dump body partition means Door opening and closing apparatus for actuation of the doors of a bottom dump type vehicle, said apparatus comprising a common linkage mechanism operable by a single power means for simultaneous and synchronized opening of the doors whereby emptying of t... | 08/15/1978 |
| 3981539 | Wagon door control system and dual cam therefor Apparatus for controlling the operation of dump doors of a wagon or the like, permitting the operator to set a control lever selectively in a closed or open position, with the apparatus effecting the desired selective movement of the doors and returning t... | 09/21/1976 |
| 3966255 | Bottom dump vehicle A bottom dump vehicle has a driver's cab mounted on the front portion of the vehicle and an engine mounted on the rear portion thereof. The vehicle has a front and a rear axle, each of which mounts a plurality of wheels. A drive train extends from the eng... | 06/29/1976 |
