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![[Search a list of Patent Appplications for class 303]](../as.gif) Class 303 | FLUID-PRESSURE AND ANALOGOUS BRAKE SYSTEMS |
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![[List of Patents for class 303 subclass 1]](../ps.gif) | 1 | MISCELLANEOUS |
| | 2 | MULTIPLE SYSTEMS |
| | 5 | MULTIPLE FLUID-RECEIVING DEVICES |
| | 6.01 |  Multiple motors |
| | 6.1 |  Brake and door |
| | 7 | Sectional train |
| | 9 | Supplementary in emergency |
| | 9.61 | Separate and simultaneous control |
| | 9.62 | Apportioning control |
| | 9.63 |  Failure responsive |
| | 9.64 | Motorcycle |
| | 9.65 | Manual |
| | 9.66 | For pneumatic system |
| | 9.67 | Inertia |
| | 9.69 | Load |
| | 9.71 | Having significant pressure control by front brake |
| | 9.72 | Having multiple pistons affecting fluid flow |
| | 9.73 | Having significant output feature |
| | 9.75 | Detail |
| | 9.76 | Spring operated motor |
| | 10 | WITH PUMP |
| | 13 | MULTIPLE CONTROL |
| | 18 | EXTERIOR CONTROL |
| | 121 | SPEED-CONTROLLED |
| | 122 | With failure responsive means |
| | 122.01 | Traction failure |
| | 122.02 | Antilock failure with warning |
| | 122.03 | Failure related to brake condition (e.g., wear, sensor or switch operation) with indicator |
| | 122.04 | Electric system failure (no warning) |
| | 122.06 | ABS failure detected via time period of sensed wheel lock or wheel speed signal |
| | 122.07 | Time signal error (no warning) |
| | 122.08 | Active circuit testing |
| | 122.09 | Pressure failure |
| | 123 | For a tractor-trailer type vehicle |
| | 125 | Automatic braking including speed governor or hydraulic retarder |
| | 127 | Pneumatic |
| | 137 | Motorcycle |
| | 138 | Speed, deceleration, or ABS indication |
| | 139 | And traction control |
| | 140 | With yaw control |
| | 141 | With engine torque power take-off (PTO) control |
| | 142 | Motor control |
| | 143 | With four wheel drive or all wheel drive |
| | 144 | Intersecting traction and skid occurrence |
| | 145 | Odd condition (e.g., fuel supply cut-off, modulating valve) |
| | 146 | With yaw control |
| | 149 | Split coefficient of friction (mu) |
| | 150 | Specific mu determination |
| | 151 | Traction-motor vehicle |
| | 152 | Regenerative brakes |
| | 153 | Lead signal control for antiskid |
| | 154 | Multiple control signal with multiple threshold |
| | 155 | Braking pressure demand or braking force desire |
| | 156 | Pulse frequency or time period controlling pressure rebuild |
| | 157 | Pressure release control |
| | 158 | Pressure reapply control |
| | 159 | Wheel pressure delay compared to reference |
| | 160 | Pressure or specific condition (e.g., deceleration) determines wheel speed instead of direct speed sensor |
| | 161 | Current or voltage ramp proportional to vehicle speed |
| | 162 | Current control of linear piston drive motor |
| | 163 | Slip ratio |
| | 164 | Slip time versus nonslip time |
| | 165 | Variable target slip values |
| | 166 | Wheel speed sensor and braking pressure sensor |
| | 167 | Brake force or pressure determined from speed sensors |
| | 168 | Wheel generated pulse signal control (speed sensor) |
| | 169 | Left or right speed comparison |
| | 170 | Select high wheel speed versus select low |
| | 171 | Wheel speed versus pseudo vehicle speed (e.g., from deceleration) |
| | 174 | Previously stored wheel speed information |
| | 175 | Incipient or imminent skid measured |
| | 176 | Antilock control disabled or altered for acceleration or speed ranges |
| | 177 | Sensing jerk, acceleration, or deceleration |
