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Class Information
Number: 303/63
Name: Fluid-pressure and analogous brake systems > Charging > Motor > Failure-system pressure
Description: Upon a reduction of pressure in the system to a point which may endanger control devices act to charge the motor.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7077481 |
Spring brake modulating relay valve |
Jul. 18, 2006 |
| 6837552 |
Hybrid brake system for a vehicle |
Jan. 4, 2005 |
| 6769744 |
Spring brake modulating relay valve |
Aug. 3, 2004 |
| 6375275 |
Railroad brake pipe overcharge and separation detection system |
Apr. 23, 2002 |
| 6312060 |
Dual mode emergency braking apparatus and method of use thereof |
Nov. 6, 2001 |
| 5634696 |
Railway brake pipe bracket with access ports |
Jun. 3, 1997 |
| 4792192 |
Automatic brake source select system |
Dec. 20, 1988 |
| 4763959 |
Electronic control for fluid pressure braking system |
Aug. 16, 1988 |
| 4736991 |
Emergency pressurized fluid system |
Apr. 12, 1988 |
| 4726628 |
Protection valve device for spring parking brake systems |
Feb. 23, 1988 |
| 4474412 |
Brake cylinder pressure maintaining valve |
Oct. 2, 1984 |
| 4174869 |
Electro-hydraulic brake actuating system |
Nov. 20, 1979 |
| 4125294 |
Fluid pressure control valve device arranged for fail-safe operation |
Nov. 14, 1978 |
| 4071284 |
Method and apparatus for effecting double-acting braking |
Jan. 31, 1978 |
| 4049324 |
Electro-pneumatic emergency brake control system for a vehicle train |
Sep. 20, 1977 |
| 4033629 |
Automatic freight car brake apparatus with spring-applied fluid-pressure-released hand brake |
Jul. 5, 1977 |
| 4003606 |
Brake system |
Jan. 18, 1977 |
| 3999810 |
Hydraulic brake pressure modulator |
Dec. 28, 1976 |
| 3999075 |
Control system for an integral spring-loaded parking and service brake |
Dec. 21, 1976 |
| 3992064 |
Vehicle brake system |
Nov. 16, 1976 |
| 3970111 |
Electromagnetic 3-way valve arrangement |
Jul. 20, 1976 |
| 3945691 |
Full-power hydraulic braking systems |
Mar. 23, 1976 |
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