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| Number | Title | Issue Date |
| 7311215 | Positional variable orifice pin for hydraulic pressure control in a draft gear A draft gear assembly including a housing having an open front and closed rear portions. A compressible cushioning element is positioned within the rear portion with a seating arrangement abutting one end thereof adjacent the open front portion. A friction cushionin... | 12/25/2007 |
| 6923331 | High capacity draft gear A friction-type draft gear assembly includes a housing having an open front and closed rear portions. A compressible cushioning element is positioned within the rear portion with a seating arrangement abutting one end thereof adjacent the open front portion. A frict... | 08/02/2005 |
| 6801679 | Multifunctional intelligent optical modules based on planar lightwave circuits Since the bandwidth-intensive applications such as Internet access, electronic commerce, multimedia applications, and distributed computing are rapidly increasing the volume of telecommunication traffics, optical networks become an essential backbone of telecommunic... | 10/05/2004 |
| 4718351 | Articulated coupling for integral trains An articulated coupling having a center coupling and a plurality of side bearings or couplings coaxial along a lateral axis to facilitate yaw and pitch between two cars while restricting roll. The side bearings each have a cylindrical member on one car re... | 01/12/1988 |
| 4591059 | Railroad car draft gear assembly with friction bore wear liners A draft gear assembly to cushion and absorb impacting forces on a railroad car coupler system includes a housing containing a spring package. Through a follower the spring package interacts with a set of friction shoes. The shoes are positioned in frictio... | 05/27/1986 |
| 4074813 | Telescopic draft gear A hollow plunger extends into the cavity of the draft gear body. The inner end of the plunger is expansible. One or more wedges are held by the body adjacent the inner end of the plunger, and shoes are positioned between the wedge(s) and the inner side of... | 02/21/1978 |
