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Class Information
Number: 303/29
Name: Fluid-pressure and analogous brake systems > Automatic > Supplementary control pipe
Description: Systems with supplementary control-pipe, the action being automatic with each pipe.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6179391 |
Relay valve with integral biased double check valve |
Jan. 30, 2001 |
| 5730504 |
Release assuring arrangement for combined electro-pneumatic/automatic pneumatic brake |
Mar. 24, 1998 |
| 5564795 |
Electropneumatic brake control system parking brake |
Oct. 15, 1996 |
| 5393129 |
Electro-pneumatic freight brake control system |
Feb. 28, 1995 |
| 5042883 |
Trailer braking system for a towing vehicle |
Aug. 27, 1991 |
| 4865394 |
Straight air brake control system |
Sep. 12, 1989 |
| 4472001 |
Fluid pressure braking system |
Sep. 18, 1984 |
| 4182535 |
Trailer brake system |
Jan. 8, 1980 |
| 4112961 |
Tractor protection valve |
Sep. 12, 1978 |
| 4090738 |
Braking system for tractor-trailer combinations |
May. 23, 1978 |
| 4080004 |
Service and emergency trailer valve |
Mar. 21, 1978 |
| 4076325 |
Pneumatic braking system for tractor-trailer combinations |
Feb. 28, 1978 |
| 4042281 |
Service and emergency trailer valve |
Aug. 16, 1977 |
| 4002374 |
Trailer air distribution valve |
Jan. 11, 1977 |
| 3992064 |
Vehicle brake system |
Nov. 16, 1976 |
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