| Class Number |
Class Name |
No. of Patents |
| 303/901 |
Abs check valve detail |
81 |
| 303/900 |
Abs throttle control |
121 |
| 303/DIG.5 |
Acceleration peak detection |
21 |
| 303/DIG.11 |
Accumulator |
79 |
| 303/DIG.12 |
Air over hydraulic brake system |
2 |
| 303/DIG.8 |
Antichatter |
12 |
| 303/25 |
Automatic and direct |
5 |
| 303/27 |
Direct on control-pipe reduction |
3 |
| 303/26 |
Supplementary control pipe |
1 |
| 303/28 |
Automatic |
60 |
| 303/40 |
Application valve |
108 |
| 303/46 |
Augmented feed to motor |
2 |
| 303/33 |
Equalizing valves |
47 |
| 303/34 |
Rotary type |
0 |
| 303/32 |
Equilibrium |
3 |
| 303/45 |
Positive-movement equalizing valve |
1 |
| 303/41 |
Preliminary valve movement |
9 |
| 303/42 |
Emergency preventers |
3 |
| 303/44 |
Secondary service operation |
3 |
| 303/43 |
Slow-reduction emergency |
4 |
| 303/29 |
Supplementary control pipe |
15 |
| 303/30 |
Supplementary reservoir pipe |
7 |
| 303/35 |
Synchronizing |
11 |
| 303/37 |
Quick action |
34 |
| 303/39 |
Control pipe to chamber |
9 |
| 303/38 |
Service |
31 |
| 303/36 |
Release |
38 |
| 303/47 |
Train rear end first |
15 |
| 303/31 |
Vacuum |
4 |
| 303/DIG.6 |
Axle differential control |
34 |
| 303/DIG.2 |
Brake control by pressure comparison |
62 |
| 303/DIG.3 |
Electrical pressure sensor |
116 |
| 303/DIG.4 |
Pressure signal used in electrical speed controlled braking circuit |
190 |
| | Charging | |
| 303/64 |
Auxiliary reservoir |
12 |
| 303/65 |
Motor remaining charged |
3 |
| 303/66 |
Control pipe |
12 |
| 303/67 |
Preventers |
6 |
| 303/61 |
Intermittent |
73 |
| | Motor | |
| 303/63 |
Failure-system pressure |
22 |
| 303/62 |
Motor-movement control |
2 |
| 303/59 |
Outlet-pressure control |
8 |
| 303/60 |
Maintaining |
16 |
| 303/57 |
Plurality of pressures |
17 |
| 303/58 |
Reuse |
0 |
| 303/48 |
Direct |
2 |
| 303/49 |
Liquid link |
5 |
| 303/20 |
Electric control |
565 |
| 303/18 |
Exterior control |
25 |
| 303/19 |
Deadman type |
21 |
| 303/84.1 |
Flow retarder |
59 |
| 303/84.2 |
Isolation valve |
69 |
| 303/24.1 |
Inertia control |
71 |
| 303/22.1 |
Load control |
95 |
| 303/22.8 |
Detail |
70 |
| 303/22.2 |
Empty and load type |
46 |
| 303/22.3 |
Alterable for different classes of service |
2 |
| 303/22.4 |
Failure responsive |
23 |
| 303/22.6 |
Railway vehicle |
44 |
| 303/22.7 |
Detail |
53 |
| 303/22.5 |
Responsive to fluid pressure spring |
46 |
| 303/89 |
Locks |
142 |
| 303/86 |
Miscellaneous operations on control pipe |
82 |
| 303/1 |
Miscellaneous |
70 |
| 303/50 |
Motorman's valves |
54 |
| 303/51 |
Conductor type |
3 |
| 303/56 |
Details |
33 |
| 303/54 |
Equalizing |
33 |
| 303/55 |
Preliminary discharge |
1 |
| 303/52 |
Multiple motors |
85 |
| 303/53 |
Engine and train |
2 |
| 303/13 |
Multiple control |
121 |
| 303/14 |
Double heading |
49 |
| 303/15 |
Fluid and electric |
460 |
| 303/16 |
Automatic electric |
36 |
| 303/17 |
Electric impulse |
5 |
| 303/5 |
Multiple fluid-receiving devices |
4 |
| 303/6.01 |
Multiple motors |
70 |
| 303/9.62 |
Apportioning control |
132 |
| 303/9.75 |
Detail |
116 |
| 303/9.63 |
Failure responsive |
103 |
| 303/9.66 |
For pneumatic system |
33 |
| 303/9.72 |
Having multiple pistons affecting fluid flow |
41 |
| 303/9.73 |
Having significant output feature |
52 |
| 303/9.74 |
Multiple outlets |
31 |
| 303/9.71 |
Having significant pressure control by front brake |
69 |
| 303/9.67 |
Inertia |
54 |
| 303/9.68 |
Inertia weight |
78 |
| 303/9.69 |
Load |
117 |
| 303/9.65 |
Manual |
9 |
| 303/9.64 |
Motorcycle |
53 |
| 303/6.1 |
Brake and door |
13 |
| 303/7 |
Sectional train |
444 |
| 303/8 |
Multiple brake valves |
19 |
| 303/9.61 |
Separate and simultaneous control |
92 |
| 303/9.76 |
Spring operated motor |
63 |
| 303/9 |
Supplementary in emergency |
104 |
| 303/2 |
Multiple systems |
88 |
| 303/3 |
Fluid pressure and electric |
544 |
| 303/4 |
Fluid pressure and vacuum |
13 |
| 303/90 |
Pipeless valves |
0 |
| 303/DIG.9 |
Plural processors |
49 |
| 303/DIG.1 |
Pressure comparison |
20 |
| 303/87 |
Pulsation neutralizers |
120 |
| | Releasing | |
| 303/80 |
Auxiliary reservoir |
6 |
| 303/81 |
Control pipe |
37 |
| 303/82 |
By action of control-pipe pressure |
54 |
| 303/83 |
To chamber |
5 |
| 303/68 |
Motor |
99 |
| 303/72 |
Delayed |
10 |
| 303/73 |
Blow down |
3 |
| 303/74 |
Graduated |
24 |
| 303/71 |
Fluid-pressure retracting |
130 |
| 303/75 |
Preventers |
5 |
| 303/78 |
Auxiliary-reservoir control |
0 |
| 303/77 |
Control-pipe pressure |
7 |
| 303/79 |
Loaded valve |
2 |
| 303/76 |
Motorman valve control |
4 |
| 303/69 |
Quick |
63 |
| 303/70 |
Venting auxiliary reservoir |
4 |
| 303/DIG.7 |
Small tire digest |
17 |
| 303/121 |
Speed-controlled |
49 |
| 303/188 |
All wheel apportioning arrangement (e.g., cross coupling) |
26 |
| 303/139 |
And traction control |
150 |
| 303/144 |
Intersecting traction and skid occurrence |
28 |
| 303/142 |
Motor control |
20 |
| 303/145 |
Odd condition (e.g., fuel supply cut-off, modulating valve) |
23 |
| 303/141 |
With engine torque power take-off (pto) control |
70 |
| 303/143 |
With four wheel drive or all wheel drive |
21 |
| 303/140 |
With yaw control |
203 |
| 303/176 |
Antilock control disabled or altered for acceleration or speed ranges |
59 |
| 303/125 |
Automatic braking including speed governor or hydraulic retarder |
60 |
| 303/126 |
Aircraft |
71 |
| 303/167 |
Brake force or pressure determined from speed sensors |
75 |
| 303/155 |
Braking pressure demand or braking force desire |
301 |
| 303/162 |
Current control of linear piston drive motor |
66 |
| 303/161 |
Current or voltage ramp proportional to vehicle speed |
11 |
| 303/187 |
Diagonal wheels apportioning arrangement |
44 |
| 303/199 |
Electric control circuit detail |
39 |
| 303/123 |
For a tractor-trailer type vehicle |
91 |
| 303/124 |
Electric brake |
40 |
| 303/190 |
Four-wheel drive or all wheel drive |
63 |
| 303/186 |
Front-rear axle apportioning or speed difference |
166 |
| 303/113.1 |
Having a valve system responsive to a wheel lock signal |
274 |
| 303/113.4 |
Including a stroke sensor |
349 |
| 303/114.1 |
Including hydraulic power booster |
288 |
| 303/114.2 |
Parallel boosters |
25 |
| 303/114.3 |
Including pneumatic power booster |
208 |
| 303/116.1 |
Including pump with system solenoid valve |
434 |
| 303/116.2 |
Having pressure line isolated from master cylinder line |
189 |
| 303/118.1 |
Pneumatic (relay or motorman) type |
121 |
| 303/117.1 |
Spool valve |
130 |
| 303/115.1 |
System controlled by expansible chamber type modulator |
70 |
| 303/115.2 |
Having electric control |
195 |
| 303/115.4 |
Having pump pressure control |
270 |
| 303/115.5 |
Pump pressure operates fluid motor |
25 |
| 303/115.3 |
Having vacuum motor control |
45 |
| 303/115.6 |
Including flywheel control (e.g., motorcycle type) |
45 |
| 303/119.1 |
System controlled by solenoid valve |
223 |
| 303/119.3 |
Housing for plural solenoids |
149 |
| 303/119.2 |
System solenoid valve detail |
428 |
| 303/116.4 |
System pump structure detail |
183 |
| 303/116.3 |
Vehicle wheel operated pump |
21 |
| 303/113.5 |
With system apportioning control |
213 |
| 303/113.2 |
With traction control |
336 |
| 303/113.3 |
Including booster |
123 |
| 303/175 |
Incipient or imminent skid measured |
14 |
| 303/189 |
Independent control for each wheel |
59 |
| 303/153 |
Lead signal control for antiskid |
12 |
| 303/169 |
Left or right speed comparison |
58 |
| 303/137 |
Motorcycle |
43 |
| 303/154 |
Multiple control signal with multiple threshold |
44 |
| 303/191 |
Odd condition or device detection (e.g., fluid or brake temperature, hill holder, anti-squeal controller, acoustic emission) |
233 |
| 303/194 |
Hop or bounce (from vibration or oscillation) signal |
34 |
| 303/198 |
Speed and vehicle load condition (e.g., cargo) |
46 |
| 303/195 |
Spurious signal |
42 |
| 303/196 |
For rough road |
31 |
| 303/192 |
Vehicle inclination |
55 |
| 303/197 |
With feeler wheel |
2 |
| 303/193 |
With sonar or radar type sensor |
42 |
| 303/127 |
Pneumatic |
34 |
| 303/128 |
For a railway vehicle (e.g., train) |
53 |
| 303/135 |
Automatic |
12 |
| 303/134 |
Compared to fixed reference |
5 |
| 303/131 |
Plural similar inputs |
1 |
| 303/136 |
Pseudo-speed |
3 |
| 303/132 |
Speed responsive and other conditions (e.g., acceleration, pressure, track hazard, friction) |
10 |
| 303/133 |
Traction control |
16 |
| 303/129 |
With speed governor (hydraulic or inertia) |
0 |
| 303/130 |
Compared to fixed reference |
2 |
| 303/160 |
Pressure or specific condition (e.g., deceleration) determines wheel speed instead of direct speed sensor |
15 |
| 303/158 |
Pressure reapply control |
75 |
| 303/157 |
Pressure release control |
50 |
| 303/174 |
Previously stored wheel speed information |
68 |
| 303/156 |
Pulse frequency or time period controlling pressure rebuild |
115 |
| 303/152 |
Regenerative brakes |
166 |
| 303/170 |
Select high wheel speed versus select low |
51 |
| 303/177 |
Sensing jerk, acceleration, or deceleration |
38 |
| 303/184 |
Acceleration-deceleration versus timing |
16 |
| 303/182 |
Accelerometer versus wheel rotation sensor |
29 |
| 303/181 |
Linear inertia or accelerometer (includes pendulum type) |
11 |
| 303/179 |
Rotary and linear inertia |
1 |
| 303/180 |
Rotary inertia |
3 |
| 303/185 |
Sensing deceleration then acceleration |
14 |
| 303/183 |
Specific acceleration or deceleration determined electronically |
36 |
| 303/178 |
Wheel deceleration to find velocity error |
30 |
| 303/163 |
Slip ratio |
75 |
| 303/164 |
Slip time versus nonslip time |
13 |
| 303/150 |
Specific mu determination |
123 |
| 303/138 |
Speed, deceleration, or abs indication |
31 |
| 303/149 |
Split coefficient of friction (mu) |
84 |
| 303/112 |
Torque sensing |
122 |
| 303/151 |
Traction-motor vehicle |
24 |
| 303/165 |
Variable target slip values |
48 |
| 303/168 |
Wheel generated pulse signal control (speed sensor) |
69 |
| 303/159 |
Wheel pressure delay compared to reference |
64 |
| 303/166 |
Wheel speed sensor and braking pressure sensor |
100 |
| 303/171 |
Wheel speed versus pseudo vehicle speed (e.g., from deceleration) |
32 |
| 303/173 |
By comparison of plural wheel speeds |
54 |
| 303/172 |
By direct feedback or instant wheel control |
14 |
| 303/122 |
With failure responsive means |
89 |
| 303/122.06 |
Abs failure detected via time period of sensed wheel lock or wheel speed signal |
68 |
| 303/122.08 |
Active circuit testing |
64 |
| 303/122.02 |
Antilock failure with warning |
30 |
| 303/122.04 |
Electric system failure (no warning) |
63 |
| 303/122.05 |
Electronic or electric component (e.g., speed detector, failure sensing) with warning |
89 |
| 303/122.03 |
Failure related to brake condition (e.g., wear, sensor or switch operation) with indicator |
35 |
| 303/122.09 |
Pressure failure |
80 |
| 303/122.13 |
Auxiliary pressure failure |
57 |
| 303/122.14 |
With warning |
18 |
| 303/122.11 |
Detected via stroke sensor |
41 |
| 303/122.15 |
Pneumatic |
13 |
| 303/122.12 |
Pump failure detection |
36 |
| 303/122.1 |
With warning |
30 |
| 303/122.07 |
Time signal error (no warning) |
26 |
| 303/122.01 |
Traction failure |
24 |
| 303/146 |
With yaw control |
341 |
| 303/147 |
From speed sensors |
109 |
| 303/148 |
From split coefficient of friction (mu) |
70 |
| 303/85 |
Supplementary reservoir |
38 |
| 303/DIG.10 |
Valve block integrating pump, valves, solenoid, accumulator, etc. |
106 |
| 303/10 |
With pump |
295 |
| 303/11 |
Pressure control |
177 |
| 303/12 |
Vacuum |
23 |
