Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Speed maintaining control of train vehicles

Speed maintaining control of train vehicles

US Patent 4217643 · Granted Aug 12, 1980

Estimated economic value: $1,975,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Brake rotor assembly2017
Gear motor start up control2005
Multi-level transformer and line loss compensator and method2004
Multiple virtual meters in one physical meter2004
Method and system for compensating a rod position indication system for non-line1996
Method and system for magnetic coupling compensating a rod position indication s1995
Optical communication apparatus and method for telephone supervisory and audio s1989
Speed control apparatus and method for rapid transit vehicles1986
Transit vehicle speed control apparatus and method1981
Substantially pure cyclic phosphonitrilic chloride trimer1981
Failsafe train vehicle control signal threshold detector apparatus1981
Train vehicle control microprocessor power reset1981