William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7350842 | Sidewall panel and tarpaulin cover system for flat bed trailers, and truck trailer incorporating same A cover system, for protectively covering a trailer, includes a plurality of stakes, stake-supported panels and stake-retaining pockets. Each pocket includes a base section, adapted to be fixed to the vehicle, and a movable section which moves between open and close... | 04/01/2008 |
| 7281753 | Vehicle enclosure Door assembly includes a doorframe that can be secured to the vehicle, and a preferably rigid door that is movable between an open and closed position. The door can be secured to the vehicle in the open position so that the passengers have the option of riding in th... | 10/16/2007 |
| 7278359 | Railway car for transporting semi-trucks The invention is directed to a railway car for the transportation of semi-trucks. The railway car may have an interior defined by a support surface for the trucks, a pair of upstanding sidewalls, and a roof. End doors may be located at each end of the railway car fo... | 10/09/2007 |
| 7275488 | Auto rack railway car A railway car for transportation of motor vehicles. The railway car may be articulated, comprising two or more units. The railway car may have end doors which are pivotally attached to the roof of the railway car. Flexible seals may be provided along the inner and o... | 10/02/2007 |
| 7121042 | Door assembly for sealing a chamber A door assembly providing an airtight seal for a chamber. The door assembly includes a link assembly that allows a door to move inward toward a gasket sealing an opening into the chamber. ... | 10/17/2006 |
| 7047889 | Rail car with cantilevered articulation An articulated rail car has a plurality of rail car units joined together at articulation connections, and carried upon a number of rail car trucks that is equal to the number of rail car units plus one. At least one of the articulated connectors is located at an of... | 05/23/2006 |
| 7025004 | Passenger rail car sliding door with high platform threshold An improved door assembly has a single movable door and may have a separate movable high platform threshold. The door assembly is formed of an upper door section and a lower door section which is fixed to the upper door section. A support member may be integral with... | 04/11/2006 |
| 6935245 | Railway car for transporting semi-trucks The invention is directed to a railway car for the transportation of semi-trucks. The railway car may have an interior defined by a support surface for the trucks, a pair of upstanding sidewalls, and a roof. End doors may be located at each end of the railway car fo... | 08/30/2005 |
| 6845722 | Auto rack car with end closure An auto rack rail road car has a main deck and upper deck. It is provided with a door for controlling access thereto. The door is a radial arm door, and has a ladder mounted thereon by which personnel can ascend the second deck when the door is open. A second ladder... | 01/25/2005 |
| 6821065 | Autorack rail road car with reduced slack A rail road car has a rail car body which includes a housing structure. The housing structure has a pair of sidewalls, a roof and at least one deck mounted to the sidewalls. An enclosed lading space is defined by the housing structure and there is at least one door ... | 11/23/2004 |
| 6647896 | Greaseless hanger assembly for a railcar door A railway car door (10) includes a substantially planar door (14) and a pair of elongated support members (18) which are rotatably mounted to the door. A drive mechanism (50) is operatively associated with the railcar door for imparting rotational forces ... | 11/18/2003 |
| 6637347 | Anti-spin/anti-drift module for railway car door A module is provided for use with a drive mechanism particularly suited for plug-type railcar doors to prevent "overspinning" and "drifting." The mechanism disclosed is a double brake-type mechanism and includes a first rotatably mounted member. The first... | 10/28/2003 |
| 6591761 | Sealing door for a rail car A sliding door is provided for use on a rail car having a floor and a side wall with an opening therein along one side of the floor. The opening is defined by a pair of side posts having respective front surface and a top and bottom sill. The front surfac... | 07/15/2003 |
| 6551039 | Auto rack rail road car with reduced slack An auto rack rail road car has a main deck and at least one upper deck for carrying automobiles. The auto rack rail road car is provided with short travel buff gear and a reduced slack, or slackless, coupler. Bridge plates are provided to span the space b... | 04/22/2003 |
| 6463861 | Anti-drift retarder for gear operated door A railcar door assembly includes a drive mechanism operably connected to elongated support members for selectively imparting rotation of movement thereto, and a retarder assembly for preventing movement of the drive mechanism beyond defined limits. The dr... | 10/15/2002 |
| 6220178 | Freight cars, especially for transporting dry bulk material The freight car has an undercarriage and a running carriage connected to the undercarriage. A container is connected to the undercarriage. The container has side walls, positioned in the longitudinal direction of the freight car, and closed end walls exte... | 04/24/2001 |
| 6142082 | Guide bracket for doors on railroad cars An improved guide bracket for doors on railroad cars which reduces or eliminates wear of the guide bracket and the guide member of the lower door track of the railroad car. The improved guide bracket includes a J-shaped plate and a tubular plastic wear co... | 11/07/2000 |
| 5829360 | Auto rack door lock An auto rack car has an improved door locking mechanism for heightened security in auto rack car doors which rely on upper and lower lock assemblies for security. The improved locking mechanism is lightweight and inexpensive and is adaptable for retrofit ... | 11/03/1998 |
| 5682823 | Removable insulated cover and method for transporting hot oversized steel ingots A removable cover for encasing freight having an oversized portion of freight positioned on a bed of a freight car is shown including an interior insulated space for encasing the freight, openings through which the oversized portion of freight extends, an... | 11/04/1997 |
| 5601033 | Door structure for a railcar in an articulated train A novel door structure is provided for each end of a railcar in an articulated train. The train includes a plurality of railcars which are coupled together and spaced apart from each other a small distance. The door structure can be easily opened and clos... | 02/11/1997 |
| 5271652 | Opening/closing assisting device for loading deck side plate A device in which an auxiliary force is applied to a loading deck side plate of a truck to reduce the force required for opening and closing the side plate. A spring is provided on the underside of the loading deck to pull a rod substantially horizontally... | 12/21/1993 |
| 5154480 | Convertible trailer Disclosed is a pair of truck trailers, the first of which mounts on the fifth wheel of a pull-truck and has a single axle at the rear end and the second of which has a front axle and a rear axle and connects to the rear of the first trailer. Each of the p... | 10/13/1992 |
| 5140912 | Rail car end assembly A rail car end assembly comprises upper and lower tracks for guiding and stabilizing multi-panel rigid doors moving between open and closed positions. End posts are located inside the car and spaced inwardly from respective side wall end portions. The doo... | 08/25/1992 |
| 5131713 | Vehicle for a freight transportation system A vehicle for a freight transportation system has a platform with end walls located at opposite ends. A pair of doors are pivotally connected to the end walls and are pivotal upwardly between closed and open positions. The doors are held in the closed pos... | 07/21/1992 |
| 5031553 | Method and assembly for producing protective covers for mattresses including: sewing elastic bands, corner seams, hemming, measuring, conveying & positioning fabric & having adjustable sewing needle trajectories With a method for completely automatic products of fitted sheets, elastic bands are sewn into or onto the cut edges (transverse edges), and the lengths of the elastic bands correspond approximately to the widths of the pieces of fabric. Then the widths of... | 07/16/1991 |
| 5010825 | Rail car end assembly A rail car end assembly comprises upper and lower tracks for guiding and stabilizing multi-panel doors moving between open and closed positions. End posts are located inside the car and spaced inwardly from respective side wall end portions. The doors pas... | 04/30/1991 |
| 4944234 | Rail car end assembly A rail car end assembly comprises upper and lower tracks for guiding and stabilizing mutli-panel rigid doors moving between open and closed positions. End posts are located inside the car and spaced inwardly from respective side wall end portions. The doo... | 07/31/1990 |
| 4936227 | End door for rail car A rail car having an end closure provided by a pair of sliding doors. Each side wall of the rail car has a main side wall portion which terminates adjacent one end of the rail car, and an upright ladder panel spaced from the main side wall portion to prov... | 06/26/1990 |
| 4924780 | Sliding end panels for a rail car A rail car enclosure having a bottom deck, sidewalls and a curved roof defined by at least one slope on each side connecting a flat top of the roof with the sidewalls and the deck connecting the opposite end of each sidewall to form an open end of the rai... | 05/15/1990 |
| 4920894 | Modular anti-spin unit for railway car door A modular add-on unit provides (14) anti-spin protection for a gear-operated locking system (13) of plug-in railway freight car doors (12). The unit has an input shaft (26) with a handle (36) attached thereto, and an output shaft (42) with a recess (40) t... | 05/01/1990 |
| 4917021 | Door finger guide for doors on auto rack cars A door finger guide for doors an auto rack cars to guide the upper ends of the doors along an upper track during opening and closing operations. The door finger guide includes a metal supporting member or base plate having a lower end secured to the door ... | 04/17/1990 |
| 4913061 | Auto rack side panel support system Automobiles are transported on train cars called auto racks. These auto racks are covered by galvanized steel panels that are mounted by brackets to the auto rack frame. The brackets and frame are typically formed of a metal other than galvanized steel an... | 04/03/1990 |
| 4715291 | Railroad car door bottom guide rail system A railroad car arranged to transport vehicles includes a floor, a roof, a pair of spaced side walls and at least one door assembly suspended for movement from a closed position at an end of the car to an open position adjacent a side wall for the loading ... | 12/29/1987 |
| 4688490 | Rail car door bottom guide rail having tire-actuated, depressible sections A railroad car arranged to transport automobiles comprises a floor, a roof, a pair of spaced sidewalls, and at least one door assembly that is guided to a position adjacent a sidewall to enable loading and unloading of the rail car. A rail guides the lowe... | 08/25/1987 |
| 4686909 | Rail car bridge plate securement assembly with rotating leaf An assembly for securing a standard bridge plate to the upper deck of a railroad car arranged to carry automobiles on at least two levels, said railroad cars having a track member from which a sliding door is hung positioned adjacent the edge of the deck ... | 08/18/1987 |
| 4682811 | Van body used with container car, freight car and truck This invention relates to an improved van body which is used with a container car, a freight car, and a truck and comprises inverse L-shaped side frames located at the right and left side walls of the front and the back of the floor, said side frames bein... | 07/28/1987 |
| 4677918 | Railroad car with retractable closure track held down by bridge plate A railroad car for transporting vehicles such as automobiles and trucks has a pair of door assemblies which close each end of the railroad car. The lower end of the door assemblies are guided in a track and the track has vertically retractable sections lo... | 07/07/1987 |
| 4667604 | Autorack railroad car improved bridge plate support structure A railroad car for transporting vehicles such as automobiles and trucks, comprising a floor and two side walls defining an interior space and terminating in an opening at each end; at least one elevated deck spaced above the floor and extending the length... | 05/26/1987 |
| 4668008 | Sliding door trailer A trailer having a plurality of sliding side doors as well as conventional rear doors permits side access to the trailer interior, enhancing cargo loading and unloading speed and flexibility. At least one side of the trailer includes full length upper and... | 05/26/1987 |
| 4649831 | Rail car with space allowing for opening of end enclosure A rail car having a bed, sidewalls and a curbed roof defined by at least one slope on each side connecting the flat top of the roof with the sidewalls and an end opening. Substantially symmetrical doors close the end opening. The doors are hung such that ... | 03/17/1987 |