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 |
| 7975619 | Two-axle truck for a railway car and a railway car Lateral pressure which develops in the front wheelset when traveling along a curved track is decreased while suppressing an increase in costs as much as possible. A two-axle truck for a railway car has a front wheelset having wheels with a first tread gradient and a... | 07/12/2011 |
| 6966266 | Device for the radial control of a rail vehicle The invention relates to a device for the radial control of a rail vehicle. According to the invention, at least one wheel set (1) is mounted in a bogie or chassis and the ends of said wheel set(s) can be adjusted in the longitudinal direction of the vehicle,... | 11/22/2005 |
| 6752087 | Vehicle with a steerable wheelset A vehicle where respective inwardly inclined wheels (15) of a steerable wheelset run on respective inwardly sloping faces (54) of a guideway having centreline (39). The vehicle having sensing means for sensing lateral didsplacement of the wheels... | 06/22/2004 |
| 6722284 | Steering mechanism for rail guided robots in a library A steering mechanism for a track-mounted robot is provided. The steering mechanism comprises guide wheels, which are fixed to yokes that pivot around secondary drive wheels. The pivot action of the yokes allows the guide wheels to maintain full contact with the trac... | 04/20/2004 |
| 6601521 | Traveling cleaner for textile manufacturing plant A traveling cleaner (12) for a textile manufacturing plant, the carriage of which has a carrying structure (18) supported on three running wheels (1, 2, 3). The running wheels (1, 2, 3) are suspended on wheel suspension units (20) and are arranged in a tr... | 08/05/2003 |
| 6092469 | Radially side mounted railway car truck An improved railroad car wheel truck assembly comprises four arcuate weight bearing surfaces, one above each axle bearing, providing a direct load path such that a light weight frame can be used, each weight bearing surface being received within a matchin... | 07/25/2000 |
| 5909711 | Bogie for a railway vehicle with adjustable wheel sets and railway vehicle with such a bogie The bogie contains a bogie frame supported on two wheel sets with a coupling device via which the two wheel sets are coupled to one another so as to be steerable in opposite senses. The coupling device contains an additional adjustment device for the tran... | 06/08/1999 |
| 5832838 | Frame brace universal mounting bracket assembly A rail car truck side frame for use in a frame brace truck which has stabilizing cross braces extending between the side frames. The side frame has a top compression member and a bottom tension member which are joined by upwardly and outwardly slanted end... | 11/10/1998 |
| 5784967 | Rear steering axle directional control linkage for road vehicles A two-state directional control linkage (11) for controlling a steering axle, comprising a device for activating and deactivating the linkage (11) to lock the linkage in the operative position of the device and unlock it in the inoperative position thereo... | 07/28/1998 |
| 5680819 | Vehicle combination with at least two vehicles with steered single-wheelset chassis To provide a vehicle combination consisting of at least two railborne vehicles with single-wheelset chassis with a coupling for the single-wheelset chassis, which guarantees the most accurate alignment possible of the single-wheelset chassis in the direct... | 10/28/1997 |
| 5540157 | Single-axle bogie for trackbound vehicle The invention relates to a self-steering single-axle bogie for trackbound vehicles comprising one single wheel set (8) and wherein each wheel (8a, 8b) is rigidly connected to an intermediate wheel axle (14), wherein the wheel set (8) is attached rigidly o... | 07/30/1996 |
| 5461986 | Diagonally braced rail truck with improved end block A railroad car truck includes a pair of side frames and a bolster which is supported by springs on the side frame. There are diagonal cross braces attached to the side frames with each cross brace being attached to one side frame on one side of the bolste... | 10/31/1995 |
| 5372073 | Truck for low-platform cars In the truck (1) the static and dynamic forces are absorbed by the frame (5). In designing the body unit fitted on the frame (5), therefore, only the unit's own weight and the passenger load are significant, thus facilitating the use of extremely lightly-... | 12/13/1994 |
| 5269228 | Travelling mechanism of an automatic service carriage for spinning or twisting machines The instant invention relates to a travelling mechanism of automatic service carriages for spinning or twisting machines. The invention includes a travelling mechanism having a supporting wheel mounted in a pivot bearing, the guiding axis of the pivot bea... | 12/14/1993 |
| 5243920 | Brace connection for frame braced truck A truck is braced by diagonal struts that are clamped to one another at their intersection. The clamp includes a pair of plates each having a channel to receive one of the struts. An elastomeric member is located between the struts and the plates to permi... | 09/14/1993 |
| 5199531 | Rail-mounted, high-lift stacking vehicle A rail-mounted, high-lift stacking device (1) comprises a travelling mechanism (13) with at least two travelling mechanism bodies (6) of which each is provided with at least one travelling roller (7). Furthermore, the shelf-stacking device (1) has an uppe... | 04/06/1993 |
| 5076450 | Method and apparatus for reduced radius turning for large rail mounted cranes Method and apparatus for reduced radius turning for large cranes mounted on curved sections of rails or track which is effected by lifting the outboard sets of wheels of the crane supporting bogies which are located at the corners of the cranes disposed o... | 12/31/1991 |
| 5024165 | Self-steering bogie for a railway vehicle An independent wheel bogie for a railway vehicle comprising a central support structure, four independent arms carrying respective axles of the wheels and articulated to the support structure by resilient bushes, a suspension device for suspending a vehic... | 06/18/1991 |
| 4881470 | Gondola car having frameless radial truck A gondola-type railway car has an end structure supported on a frameless radial truck. The end structure includes a center sill and a bottom closure member. Side sill members are connected to the sides of the bottom closure member. The undersurface of the... | 11/21/1989 |
| 4823706 | Railway wagon suspension system A railway wagon suspension system which includes an axle assembly comprised of two wheelsets supporting springs for the wagon and interconnected by linkages at each of their ends via a respective bellcrank both of which bellcranks are pivoted to the wagon... | 04/25/1989 |
| 4802419 | Steered axle for a railway vehicle An axle for a rail vehicle is pivotally connected to two equal length swinging arms, each of which is pivotally connected to the rail vehicle. The axle rotates about a virtual vertical axis away from the axle and nearer to the center of the rail vehicle. ... | 02/07/1989 |
| 4794866 | Linear motor driven railway car An electrical linear motor stator is fixedly disposed along a roadway. A car supported on at least two trucks is guided for movement along the roadway. The trucks are pivotally mounted to the car for rotation about a vertical axis. Permanent magnets for i... | 01/03/1989 |
| 4776283 | Truck for railway vehicle In a truck for a railway vehicle having a plurality of wheels-and-axles, an arrangement is provided for permitting each wheel-and-axle an optimal steering operation when the truck runs on a curved track, and to simplify the construction of journal box loc... | 10/11/1988 |
| 4690069 | Suspension for axle control with empty car spring Spring suspensions for the sprung mass of railway cars are disclosed and which provide torque arm support of both empty and loaded cars and control of axle movement, as in curving by hinging the outer ends of radial torque arms in support of the sprung ma... | 09/01/1987 |
| 4570544 | Diagonally braced rail truck A truck comprising a pair of longitudinal side frames with axle assemblies located at opposite ends thereof. Diagonal braces extend between the side frames to provide the truck with a lateral stiffness and a yaw stiffness. The diagonal braces include stru... | 02/18/1986 |
| 4542699 | Powered radial truck In a powered truck or bogie for a railway vehicle having steerable wheelsets which pivot with respect to the truck or bogie frame, the motor for each wheelset is mounted to the truck or bogie frame and coupled to the drive transmitting means by a flexible... | 09/24/1985 |
| 4537138 | Radial trucks A railroad truck includes a pair of side frames with wheeled axles mounted there between. A roller bearing adaptor is mounted upon a roller bearing at each end of each axle with the side frames being mounted upon a shear pad mounted on the roller bearing ... | 08/27/1985 |
| 4512261 | Self-steering railway truck A railway truck having a suspension wherein pivotal suspension links are connected between the pedestal openings of a truck side frame and the bearing adaptor of the bearing received within the respective pedestal opening to suspend the side frame with re... | 04/23/1985 |
| 4480554 | Articulated rail car for vehicular trailers A single axle railroad wheel truck is disclosed having two wheels joined by a single axle. A frame supported on the wheels and axle defines four spaced apart hanger flanges. A pair of cross members parallel to the axle for supporting a railroad car body a... | 11/06/1984 |
| 4478153 | Resilient steering control assembly A coupling assembly is provided to control the movement between two structural bodies when different forces are applied thereto. Initially, a restraint and limited movement is permitted by an elastomeric member for relatively low differential forces. With... | 10/23/1984 |
| 4445439 | Railroad vehicle truck with single wheelset A railroad vehicle truck having a single wheelset includes a pair of spaced side frames. The side frames are joined into a rigid unit by a pair of transversely positioned crossbars. The crossbars are positioned one each on each side of the wheelset which ... | 05/01/1984 |
| 4444121 | Single wheelset railway truck rigid transom connected sideframes A railroad vehicle truck having a single wheelset includes a pair of spaced side frames. The side frames are joined into a rigid unit by a pair of transversely positioned transom cross bars. The cross bars are positioned one each on each side of the wheel... | 04/24/1984 |
| 4424750 | Single wheelset railway truck sideframe A side frame for a single axle railway truck is provided. The side frame has top and bottom and spaced side walls. The side frame has a generally hollow cross section, with an upper middle portion, downwardly sloped intermediate portion and lower outer po... | 01/10/1984 |
| 4381713 | Convertible rail-highway semi-trailer air controlled braking and suspension shifting system An air control system is provided for a vehicle convertible between highway and railway modes of travel. Air springs suspend a rail-wheel set axle unit and highway wheel-set axle units from the vehicle body so that the one wheel-set axle unit is stored in... | 05/03/1983 |
| 4316418 | Convertible rail highway semi-trailer air controlled suspension shifting system An air control system is provided for a vehicle convertible between highway and railway modes of travel. A main body on the vehicles includes a highway wheel-set axle unit and a rail wheel-set axle unit. The vehicle is designed so that one wheel-set axle ... | 02/23/1982 |
| 4289075 | Steering articulated car An articulated railroad vehicle having two or more body portions is supported on three or more single wheel set trucks. Each truck is pivotally attached to a vehicle body portion. Sensing elements detect the angle between the articulated body portions. Th... | 09/15/1981 |
| 4228740 | Transversely interconnected trucks The coupling arrangement includes a longitudinally extending shaft, means for supporting the shaft on the vehicle body and a linkage which connects the trucks to the shaft. Each linkage employs a transverse steering rod which is articulated to the end of ... | 10/21/1980 |
| 4202276 | Self-steering wheel-set for convertible railway vehicle A self-steering wheel set for a railway vehicle, particularly a convertible rail-highway semi-trailer, wherein an arcuate member is secured transversely beneath the vehicle body and a wheel-set unit or bogie is provided comprising a yoke to which a tongue... | 05/13/1980 |
| 4091739 | Resilient single axle truck An undercarriage comprises a bogie frame, a bearing for each end of the wheel axle, and at least two coil springs and at least one hydraulic shock absorber mounted between the bogie frame and each axle bearing for damping movement between the bogie frame ... | 05/30/1978 |
| 4041878 | Speed and track curvature suspension control system A pendular suspension system for vehicles running on railroad tracks, which comprises resilient means for tilting the vehicles in response to unbalanced centrifugal force, located symmetrically on either side of a central vertical longitudinal plane of th... | 08/16/1977 |