Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7080599 | Railroad hopper car transverse door actuating mechanism An actuating system for operating transverse doors of a railroad hopper car. The mechanism includes an operating member which is coupled to a door or doors of the car by a shaft and a linkage which couples a power source to the operating member, where the operating ... | 07/25/2006 |
| 6955127 | Manual railroad hopper car door actuating mechanism An actuating system for manually operating the doors of a railroad hopper car. An operating shaft having a handle is rigidly coupled to an actuating lever. A door opening lever, which is rotatably coupled to the actuating lever, is rotatably coupled to the door for ... | 10/18/2005 |
| 6405658 | Manual discharge door operating system for a hopper railcar A manual discharge door operating system for a hopper railcar includes a door actuation shaft coupled to the railcar extending across the width of the railcar. The door actuation shaft has distal ends accessible from opposite sides of the railcar with eac... | 06/18/2002 |
| 6286436 | Mobile cement laying machine A mobile cement laying machine for delivering concrete via tracks to areas which are difficult to access by truck. The mobile cement laying machine includes a carriage with a front end and a back end. A hopper is mounted to an upper side of the carriage t... | 09/11/2001 |
| 6279487 | Railroad hopper car door assembly An apparatus for controlling discharge of material from a bottom dump railroad car having a centersill defining a longitudinal axis for the hopper car is disclosed. The apparatus includes a plurality of longitudinally mounted discharge door assemblies. Ea... | 08/28/2001 |
| 6019049 | Railroad hopper car door assembly A discharge door assembly for a bottom dump covered railroad hopper car is provided. The discharge door assembly includes a plurality of longitudinally mounted discharge doors arranged in end-to-end relation across a bottom of the hopper car; with each di... | 02/01/2000 |
| 5823118 | Bottom discharge arrangement The invention relates to a bottom discharge arrangement intended for mounting on goods container of a railway truck. The arrangement includes at least one pair of flaps which is pivotally mounted on the goods container at their mutually remote edges, so a... | 10/20/1998 |
| 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 |
| 5249531 | Railraod hopper car door actuating mechanism An actuating system for operating the doors of a railroad hopper car. A plurality of levers for each hopper operate to rotate the doors of the hopper between an open and a closed position. The mechanism applies a tension force, rather than a compressive f... | 10/05/1993 |
| 5237934 | End cap gate sampling device The present invention is a control device that allows an operator to partially open a gate valve found at the bottom of a railway freight car hopper in order to obtain a sample of a flowable particulate or granular product contained within the hopper but ... | 08/24/1993 |
| 5115748 | Hopper door and operating apparatus for a railway car A door and operating apparatus for railway hopper cars includes a door having a first pivot point for rotary attachment to the hopper. A second pivot point is formed on the door and a cross beam is positioned adjacent to the door for movement in a vertica... | 05/26/1992 |
| 4747742 | Unloading flap for pourable particulate material An unloading flap of a stationary or mobile silo for pourable particulate material having at least one outlet opening comprises an upper part that is secured to a first silo wall and a lower part that hinges on the upper part and can be tilted into the op... | 05/31/1988 |
| 4695207 | Pneumatic gate operator and outlet cap A hopper discharge structure is provided with slope sheets defining a throat over a pneumatic outlet tube. The throat is closed by two sliding valve plates. The valve plates are moved by crank arrangements which provide an operator with varying mechanical... | 09/22/1987 |
| 4601244 | Operating system for railroad hopper car gate assembly doors A railroad car with a hopper-type body may include a series of gate assemblies for selective discharge of commodity in the car body. Each gate assembly may have two pairs of doors which rotate to close or open respective outlet openings in the gate assemb... | 07/22/1986 |
| 4580502 | Device for unloading a container for bulk materials A device for unloading a container used for bulk materials is such that a container floor is made up at least in part of flaps which can be tilted or swung out away from the interior. To this end at least two flaps are connected via a ridging beam or axle... | 04/08/1986 |
| 4508037 | Door lever adjusting device for hopper car doors In a railway hopper car with several bottom dump doors, the doors are operated by a main door operating member in the form of a thrust bar running the length of the car. The bar, when moved, rotates levers which rotate actuator shafts which move door oper... | 04/02/1985 |
| 4248158 | Railway hopper car gate outlet actuating mechanism An outlet assembly for application to hoppers of railroad hopper cars and the like, and slidably mounting a gate for movement between open and closed positions, in which the gate slideway is defined by trackway forming members disposed at either side edge... | 02/03/1981 |
| 4194450 | Railway hopper car door operating mechanism A door operating mechanism for a bottom dump hopper car including a plurality of transversely mounted bottom discharge gates arranged in oppositely opening pairs and operatively connected by compression struts to pendulously mounted vertical levers. The l... | 03/25/1980 |
| 4075952 | Scissor-type slide gate opener An apparatus for opening a gear activated scissor-type car pocket opener. The apparatus includes a shaft, slide members mounted on opposite outboard lengths of the shaft, links which fit into sockets connected to the gears of the opener and which are moun... | 02/28/1978 |
| 3994238 | Railway hopper car with bottom door discharge mechanism A bottom door discharge mechanism for a railway hopper car includes a bell crank arm for each of the doors located in pairs at the bottom of the hopper. The arms are tripped from track side cams on opposite sides of the car for movement to open and closed... | 11/30/1976 |
