Xiaoying G Ma, Age 68Gaithersburg, MD

6745700, Jun 8, 2004

Jun 14, 2002

10/172783

Xiaoying Ma - Itasca IL
Hans-Dieter Schaller - La Grange IL
David Jason Goding - Palos Park IL

General Motors Corporation - Detroit MI

B61D 100

105166, 105 341

An arrangement for self-steering, radial bogie, truck or vehicle frame for locomotives and other railroad vehicles, which mount unitized brakes to steering beams located either ahead and/or behind their respective leading and trailing wheelsets.

6871598, Mar 29, 2005

Jun 14, 2002

10/172806

Hans-Dieter Schaller - La Grange IL,
Xiaoying Ma - Itasca IL,
David Jason Goding - Palos Park IL,

General Motors Corporation - Detroit MI

B61F005/00

105168, 105167, 105 341, 1051571

An arrangement for self-steering, radial bogie, truck or vehicle frame for locomotives and other railroad vehicles, which includes steering beams for and located behind their respective leading and trailing wheelsets, and whose rotary motions are coupled by an inter-axle link to provide opposite transverse movement of the first and third wheelsets upon traversing curves.

2010001, Jan 21, 2010

Jul 16, 2009

12/504516

Hans-Dieter Schaller - LaGrange IL,
Xiaoying Ma - Burr Ridge IL,

B61F 5/38
B61F 3/00
B61F 5/50

105168

A self-steering system for a radial bogie of a railroad vehicle is provided. The self-steering system includes a plurality of links which connect the leading and trailing wheelsets to the bogie frame. Each of the links is adapted to provide a smaller degree of movement between the link and the wheelset at one end and a larger degree of movement between the link and the bogie frame at the other end.

5775228, Jul 7, 1998

Apr 14, 1997

8/843320

Harinder Singh Lamba - Downers Grove IL
Robert Thomas Scott - Lockport IL
Xiaoying Sean Ma - Chicago IL

General Motors Corporation - Detroit MI

B61C 1500

105 73

At least one powered disc is suspended from a locomotive and applied to a rail surface for treating the rail surface ahead of driven locomotive wheels to increase adhesion between the driven wheels and the rail surface. Torque applied to the disc varies the rate of rotation of the disc away from that of a freely-rotating disc so that a significant level of creep may be maintained between the disc and the rail surface with substantially no angle of attack between the disc and the longitudinal axis of the rail. The torque may be generated through a second disc contacting the rail and coupled to the first disc with the first and second discs rotating with differing rates of rotation, or may be generated through a passive or active actuator coupled directly to the disc. The amount of creep between the disc and the rail surface and the direction of the creep may be varied in accordance with the level of contamination of the rail and the disc may be disengaged from the rail when cleaning is not required.