Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8136455 | Primary suspension device for a railway vehicle bogie Disclosed is a device (20) for suspending a first element (16) on a second element (14, 16, 18) of a railway vehicle. Said suspension device (20) comprises two longitudinal rods (26, 28) which are each connected to the first elemen... | 03/20/2012 |
| 8011306 | Rail road car and truck therefor A railroad car truck for a railroad freight car, such as an autorack car, has a bolster mounted cross-wise between two sideframes. The bolster ends are mounted on respective spring groups carried by the sideframes. The bolster can translate laterally relative to the... | 09/06/2011 |
| 7603954 | Rail road car and truck therefor A rail road car truck has side frames mounted to rock on the wheelsets. A bolster is mounted cross-wise on the sideframes, each end of the bolster being seated on a spring group, each spring group being seated in one of the sideframe windows. The bolster has damper ... | 10/20/2009 |
| 7328659 | Rail road freight car with resilient suspension An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has a relatively soft suspension and an empty vertical bounce natural frequency of less than 2.0 Hz. The car also has additional ballas... | 02/12/2008 |
| 7263930 | Railway truck suspension design A tuned spring group with load springs, control springs, and a frictional damping arrangement for a railcar truck assembly provides better ride quality, increased resistance to suspension bottoming, and increased hunting threshold speed of a railroad car. Specifical... | 09/04/2007 |
| 7174837 | Three-piece motion control truck system An improved three-piece truck system for railroad cars provides long travel side bearings for improved stability, a “wide” friction shoe design or equivalent to improve sideframe and bolster squareness, a resilient pedestal pad for improved curving performance a... | 02/13/2007 |
| 7096795 | Linear steering truck The present invention relates generally to a linear steering truck apparatus comprising a bolster member having two ends, the bolster being located along the transverse axis extending generally perpendicular to the longitudinal axis, generally located between and pa... | 08/29/2006 |
| 6895866 | Rail road freight car with damped suspension An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has trucks that have multiple dampers in a four corner arrangement in the sideframes. The spring groups in the side frames are relative... | 05/24/2005 |
| 6823800 | Spring seat for a railway truck sideframe and method of making the same A cast metal sideframe for use in a railway car truck has a spring seat for supporting the springs of a spring set. The sideframe is molded using a core that includes a portion for defining the exterior surface of the spring seat. The core can be a single piece or m... | 11/30/2004 |
| 6817301 | Railroad freight car truck suspension yaw stabilizer Yaw stabilization device provides a light-weight mechanism for increasing the linear yaw stiffness levels between the side frame and bolster to provide the proper inter-axle shear stiffness without affecting the compliancy required of the vertical suspension system.... | 11/16/2004 |
| 6659016 | Rail road freight car with resilient suspension An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has a relatively soft suspension and an empty vertical bounce natural frequency of less than 2.0 Hz. The car also has additi... | 12/09/2003 |
| 6250232 | Running gear for a rail vehicle A running gear for a rail vehicle having sprung longitudinal members of plastic, connected to one another by means of a cross-member structure and at their free ends to axle-boxes for rail wheels. In order to obtain optimal stability of the wheelset guida... | 06/26/2001 |
| 5921186 | Bolster land arrangement for a railcar truck A railway truck assembly has an arrangement for constraining the free travel clearance between the mated bolster and side frame at the side frame window, and more particularly for reducing or eliminating the clearance or separation gap between the bolster... | 07/13/1999 |
| 5832837 | Method of assembling a model railroad truck A method of assembling a model railroad truck includes placing a truck spring on a spring retainer which is carried on either of a truck bolster or a truck side frame, resting the free end of the truck spring on the other element of the truck, pushing the... | 11/10/1998 |
| 5768999 | Model railroad truck A model railroad truck structure includes a truck bolster which has a side-frame keeper on each end thereof for maintaining a side frame in position on the bolster. An elongate truck side frame is carried on each end of the truck bolster, which is receive... | 06/23/1998 |
| 5039071 | Running gear of a railway vehicle Running gear (1) of a railway vehicle, which is suspended on the undercarriage (2) of the railway vehicel by blade support springs (3) and suspension attachment (8), with the additional arrangement of an additional blade spring as absorption spring (12); ... | 08/13/1991 |
| 4765251 | Railway car truck with multiple effective spring rates The specification discloses an improved railway car truck providing increased dampening for high volume rail cars by the use of bolster pocket wear plates in combination with five different types of springs in the spring baskets of the railway car trucks.... | 08/23/1988 |
| 4688777 | Pair of stacked springs for a railway car A pair of stacked springs are connected between a main railway car body and a truck. At least one of the springs include an elastomeric member having a center opening therein. Restricting members are provided to limit the lateral movement of one of the sp... | 08/25/1987 |
| 4674411 | Railroad-vehicle truck frame with transoms having flanges and central webs A railroad-vehicle truck with a frame that yields under torsion and consists of transoms (2) and side frames bars (1) welded into an H. The transoms (2) are positioned such that the planes that the transom webs (2k) lie in intersect at one line (S7), whic... | 06/23/1987 |
| 4505457 | Railway truck spring height adjustment device A height adjusting device for the truck of a railroad vehicle including spring retainer supporting members consisting of a plurality of concentric segments which are arranged around the axis of a spring retainer in symmetry with respect to the axis. Each ... | 03/19/1985 |
| 4458605 | Railway truck spring height adjustment device A pair of adjustment plates are disposed below a mechanical spring which supports a car body. At least one of the adjustment plates include spaced stepped portions to engage a portion of the other plate with the stepped portion engaged determining the hei... | 07/10/1984 |
| 4455946 | Articulated trucks A vehicle truck embodying articulated subtrucks or steering arms having a plurality of wheelsets, with steering arm interconnections establishing coordinated steering motions of the wheelsets, the truck also having elastic restraining devices for stabiliz... | 06/26/1984 |
| 4357880 | Bolster for a railroad car truck A bolster for a railroad car is described as having larger than normal wedge shoes which necessitate enlarged pockets that reduce the strength of the bolster casting, thereby making it more susceptible to fracturing, unless the high force concentrations i... | 11/09/1982 |
| 4333403 | Retainer railway car truck bolster spring One or more of the springs supporting the bolster of a railway car truck is a two stage spring group comprising an outer coil and an inner coil disposed within and coaxial with the outer spring. A retainer is provided to hold the inner spring in relation ... | 06/08/1982 |
| 4322981 | Railway car truck fatigue detector A fatigue detector for detecting potential fatigue failure of a bolster and/or side frames of a railway car truck. The fatigue detector comprises one or more redundant designed members located in areas of critical stress loadings of the truck, wherein the... | 04/06/1982 |
| 4248318 | Railway car truck load indicator This relates to a load spring indicator for a railway car truck for indicating the load condition of springs supporting the bolster on the truck side frame. A reference is carried by the bolster and an indicator is carried by the truck side frame. The bol... | 02/03/1981 |
| 4242966 | Railway car truck transom including a tubular bearing assembly In a railway car truck a transom is provided comprising a pair of tubes rigidly connected respectively to a pair of longitudinally extending side frames. The tubes are longitudinally and vertically aligned and are located below a bolster which extends bet... | 01/06/1981 |
| 4108080 | Railway car truck and side bearing assembly A railway car truck assembly includes spaced side frames supported by truck journal bearings. A bolster extends transversely between the side frames. A spring assembly is supported on the spaced side frames and engages the lower surface of the boltster. T... | 08/22/1978 |
| 4067262 | Railway truck A railway truck having at least one load-bearing member supported on two live axle wheelsets and including symmetrical suspension structure for damping hunting of the truck and wheelsets, the structure for each wheelset connected to bearings on the wheels... | 01/10/1978 |
| 4067261 | Damping railway vehicle suspension A damping suspension for a railway truck having load-bearing members supported on at least two live wheelsets which are self-steering and which are directly interconnected to couple their yawing movements in opposite senses. The wheelsets are self-steerin... | 01/10/1978 |
| 3995720 | Truck damping A method of damping relative movement between components of a railway car and more particularly a method of damping such movement which is operable only when the railway car is normally operating in a loaded condition.... | 12/07/1976 |
| 3939778 | Railway truck magnetic suspension method An improved method for providing non-contact active support between the unsprung and the sprung elements of a railway truck as well as lateral stability and banking of vehicles used in surface supported transportation systems having unsprung surface conta... | 02/24/1976 |
| 3937153 | Swinging railway bogie bolster The bolster rocker-beam of a railroad vehicle bogie is coupled to the supporting cradle at each end by means of two elastic assemblies. Each assembly is applied at one end against a downwardly inclined transverse cradle face and at the other end against a... | 02/10/1976 |
