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Classification Resources
 
Class   303FLUID-PRESSURE AND ANALOGOUS BRAKE SYSTEMS
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 [List of Pre Grant Publications for class 303 subclass 1][List of Patents for class 303 subclass 1]1 MISCELLANEOUS
[List of Pre Grant Publications for class 303 subclass 2][List of Patents for class 303 subclass 2]2 MULTIPLE SYSTEMS
[List of Pre Grant Publications for class 303 subclass 5][List of Patents for class 303 subclass 5]5 MULTIPLE FLUID-RECEIVING DEVICES
[List of Pre Grant Publications for class 303 subclass 10][List of Patents for class 303 subclass 10]10 WITH PUMP
[List of Pre Grant Publications for class 303 subclass 13][List of Patents for class 303 subclass 13]13 MULTIPLE CONTROL
[List of Pre Grant Publications for class 303 subclass 18][List of Patents for class 303 subclass 18]18 EXTERIOR CONTROL
[List of Pre Grant Publications for class 303 subclass 121][List of Patents for class 303 subclass 121]121 SPEED-CONTROLLED
[List of Pre Grant Publications for class 303 subclass 122][List of Patents for class 303 subclass 122]122 Subclass 122 indent level is 1 With failure responsive means
[List of Pre Grant Publications for class 303 subclass 123][List of Patents for class 303 subclass 123]123 Subclass 123 indent level is 1 For a tractor-trailer type vehicle
[List of Pre Grant Publications for class 303 subclass 125][List of Patents for class 303 subclass 125]125 Subclass 125 indent level is 1 Automatic braking including speed governor or hydraulic retarder
[List of Pre Grant Publications for class 303 subclass 127][List of Patents for class 303 subclass 127]127 Subclass 127 indent level is 1 Pneumatic
 [List of Pre Grant Publications for class 303 subclass 137][List of Patents for class 303 subclass 137]137 Subclass 137 indent level is 1 Motorcycle
 [List of Pre Grant Publications for class 303 subclass 138][List of Patents for class 303 subclass 138]138 Subclass 138 indent level is 1 Speed, deceleration, or ABS indication
[List of Pre Grant Publications for class 303 subclass 139][List of Patents for class 303 subclass 139]139 Subclass 139 indent level is 1 And traction control
[List of Pre Grant Publications for class 303 subclass 146][List of Patents for class 303 subclass 146]146 Subclass 146 indent level is 1 With yaw control
 [List of Pre Grant Publications for class 303 subclass 149][List of Patents for class 303 subclass 149]149 Subclass 149 indent level is 1 Split coefficient of friction (mu)
 [List of Pre Grant Publications for class 303 subclass 150][List of Patents for class 303 subclass 150]150 Subclass 150 indent level is 1 Specific mu determination
 [List of Pre Grant Publications for class 303 subclass 151][List of Patents for class 303 subclass 151]151 Subclass 151 indent level is 1 Traction-motor vehicle
 [List of Pre Grant Publications for class 303 subclass 152][List of Patents for class 303 subclass 152]152 Subclass 152 indent level is 1 Regenerative brakes
 [List of Pre Grant Publications for class 303 subclass 153][List of Patents for class 303 subclass 153]153 Subclass 153 indent level is 1 Lead signal control for antiskid
 [List of Pre Grant Publications for class 303 subclass 154][List of Patents for class 303 subclass 154]154 Subclass 154 indent level is 1 Multiple control signal with multiple threshold
 [List of Pre Grant Publications for class 303 subclass 155][List of Patents for class 303 subclass 155]155 Subclass 155 indent level is 1 Braking pressure demand or braking force desire
 [List of Pre Grant Publications for class 303 subclass 156][List of Patents for class 303 subclass 156]156 Subclass 156 indent level is 1 Pulse frequency or time period controlling pressure rebuild
 [List of Pre Grant Publications for class 303 subclass 157][List of Patents for class 303 subclass 157]157 Subclass 157 indent level is 1 Pressure release control
 [List of Pre Grant Publications for class 303 subclass 158][List of Patents for class 303 subclass 158]158 Subclass 158 indent level is 1 Pressure reapply control
 [List of Pre Grant Publications for class 303 subclass 159][List of Patents for class 303 subclass 159]159 Subclass 159 indent level is 1 Wheel pressure delay compared to reference
 [List of Pre Grant Publications for class 303 subclass 160][List of Patents for class 303 subclass 160]160 Subclass 160 indent level is 1 Pressure or specific condition (e.g., deceleration) determines wheel speed instead of direct speed sensor
 [List of Pre Grant Publications for class 303 subclass 161][List of Patents for class 303 subclass 161]161 Subclass 161 indent level is 1 Current or voltage ramp proportional to vehicle speed
 [List of Pre Grant Publications for class 303 subclass 162][List of Patents for class 303 subclass 162]162 Subclass 162 indent level is 1 Current control of linear piston drive motor
 [List of Pre Grant Publications for class 303 subclass 163][List of Patents for class 303 subclass 163]163 Subclass 163 indent level is 1 Slip ratio
 [List of Pre Grant Publications for class 303 subclass 164][List of Patents for class 303 subclass 164]164 Subclass 164 indent level is 1 Slip time versus nonslip time
 [List of Pre Grant Publications for class 303 subclass 165][List of Patents for class 303 subclass 165]165 Subclass 165 indent level is 1 Variable target slip values
 [List of Pre Grant Publications for class 303 subclass 166][List of Patents for class 303 subclass 166]166 Subclass 166 indent level is 1 Wheel speed sensor and braking pressure sensor
 [List of Pre Grant Publications for class 303 subclass 167][List of Patents for class 303 subclass 167]167 Subclass 167 indent level is 1 Brake force or pressure determined from speed sensors
 [List of Pre Grant Publications for class 303 subclass 168][List of Patents for class 303 subclass 168]168 Subclass 168 indent level is 1 Wheel generated pulse signal control (speed sensor)
 [List of Pre Grant Publications for class 303 subclass 169][List of Patents for class 303 subclass 169]169 Subclass 169 indent level is 1 Left or right speed comparison
 [List of Pre Grant Publications for class 303 subclass 170][List of Patents for class 303 subclass 170]170 Subclass 170 indent level is 1 Select high wheel speed versus select low
[List of Pre Grant Publications for class 303 subclass 171][List of Patents for class 303 subclass 171]171 Subclass 171 indent level is 1 Wheel speed versus pseudo vehicle speed (e.g., from deceleration)
 [List of Pre Grant Publications for class 303 subclass 174][List of Patents for class 303 subclass 174]174 Subclass 174 indent level is 1 Previously stored wheel speed information
 [List of Pre Grant Publications for class 303 subclass 175][List of Patents for class 303 subclass 175]175 Subclass 175 indent level is 1 Incipient or imminent skid measured
 [List of Pre Grant Publications for class 303 subclass 176][List of Patents for class 303 subclass 176]176 Subclass 176 indent level is 1 Antilock control disabled or altered for acceleration or speed ranges
[List of Pre Grant Publications for class 303 subclass 177][List of Patents for class 303 subclass 177]177 Subclass 177 indent level is 1 Sensing jerk, acceleration, or deceleration
 [List of Pre Grant Publications for class 303 subclass 186][List of Patents for class 303 subclass 186]186 Subclass 186 indent level is 1 Front-rear axle apportioning or speed difference
 [List of Pre Grant Publications for class 303 subclass 187][List of Patents for class 303 subclass 187]187 Subclass 187 indent level is 1 Diagonal wheels apportioning arrangement
 [List of Pre Grant Publications for class 303 subclass 188][List of Patents for class 303 subclass 188]188 Subclass 188 indent level is 1 All wheel apportioning arrangement (e.g., cross coupling)
 [List of Pre Grant Publications for class 303 subclass 189][List of Patents for class 303 subclass 189]189 Subclass 189 indent level is 1 Independent control for each wheel
 [List of Pre Grant Publications for class 303 subclass 190][List of Patents for class 303 subclass 190]190 Subclass 190 indent level is 1 Four-wheel drive or all wheel drive
[List of Pre Grant Publications for class 303 subclass 191][List of Patents for class 303 subclass 191]191 Subclass 191 indent level is 1 Odd condition or device detection (e.g., fluid or brake temperature, hill holder, anti-squeal controller, acoustic emission)
 [List of Pre Grant Publications for class 303 subclass 199][List of Patents for class 303 subclass 199]199 Subclass 199 indent level is 1 Electric control circuit detail
 [List of Pre Grant Publications for class 303 subclass 112][List of Patents for class 303 subclass 112]112 Subclass 112 indent level is 1 Torque sensing
[List of Pre Grant Publications for class 303 subclass 113.1][List of Patents for class 303 subclass 113.1]113.1 Subclass 113.1 indent level is 1 Having a valve system responsive to a wheel lock signal
 [List of Pre Grant Publications for class 303 subclass 20][List of Patents for class 303 subclass 20]20 ELECTRIC CONTROL
[List of Pre Grant Publications for class 303 subclass 22.1][List of Patents for class 303 subclass 22.1]22.1 LOAD CONTROL
 [List of Pre Grant Publications for class 303 subclass 24.1][List of Patents for class 303 subclass 24.1]24.1 INERTIA CONTROL
[List of Pre Grant Publications for class 303 subclass 25][List of Patents for class 303 subclass 25]25 AUTOMATIC AND DIRECT
[List of Pre Grant Publications for class 303 subclass 28][List of Patents for class 303 subclass 28]28 AUTOMATIC
[List of Pre Grant Publications for class 303 subclass 48][List of Patents for class 303 subclass 48]48 DIRECT
[List of Pre Grant Publications for class 303 subclass 50][List of Patents for class 303 subclass 50]50 MOTORMAN'S VALVES
     CHARGING
     RELEASING
[List of Pre Grant Publications for class 303 subclass 84.1][List of Patents for class 303 subclass 84.1]84.1 FLOW RETARDER
 [List of Pre Grant Publications for class 303 subclass 85][List of Patents for class 303 subclass 85]85 SUPPLEMENTARY RESERVOIR
 [List of Pre Grant Publications for class 303 subclass 86][List of Patents for class 303 subclass 86]86 MISCELLANEOUS OPERATIONS ON CONTROL PIPE
 [List of Pre Grant Publications for class 303 subclass 87][List of Patents for class 303 subclass 87]87 PULSATION NEUTRALIZERS
 [List of Pre Grant Publications for class 303 subclass 89][List of Patents for class 303 subclass 89]89 LOCKS
 [List of Pre Grant Publications for class 303 subclass 90][List of Patents for class 303 subclass 90]90 PIPELESS VALVES
 
CROSS-REFERENCE ART COLLECTIONS
 
 [List of Pre Grant Publications for class 303 subclass 900][List of Patents for class 303 subclass 900]900 ABS THROTTLE CONTROL
 [List of Pre Grant Publications for class 303 subclass 901][List of Patents for class 303 subclass 901]901 ABS CHECK VALVE DETAIL
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
 
DIGESTS
 
 [List of Pre Grant Publications for class 303 subclass DIG1][List of Patents for class 303 subclass DIG1] DIG1 PRESSURE COMPARISON
[List of Pre Grant Publications for class 303 subclass DIG2][List of Patents for class 303 subclass DIG2] DIG2 BRAKE CONTROL BY PRESSURE COMPARISON
 [List of Pre Grant Publications for class 303 subclass DIG5][List of Patents for class 303 subclass DIG5] DIG5 ACCELERATION PEAK DETECTION
 [List of Pre Grant Publications for class 303 subclass DIG6][List of Patents for class 303 subclass DIG6] DIG6 AXLE DIFFERENTIAL CONTROL
 [List of Pre Grant Publications for class 303 subclass DIG7][List of Patents for class 303 subclass DIG7] DIG7 SMALL TIRE DIGEST
 [List of Pre Grant Publications for class 303 subclass DIG8][List of Patents for class 303 subclass DIG8] DIG8 ANTICHATTER
 [List of Pre Grant Publications for class 303 subclass DIG9][List of Patents for class 303 subclass DIG9] DIG9 PLURAL PROCESSORS
 [List of Pre Grant Publications for class 303 subclass DIG10][List of Patents for class 303 subclass DIG10] DIG10 VALVE BLOCK INTEGRATING PUMP, VALVES, SOLENOID, ACCUMULATOR, ETC.
 [List of Pre Grant Publications for class 303 subclass DIG11][List of Patents for class 303 subclass DIG11] DIG11 ACCUMULATOR
 [List of Pre Grant Publications for class 303 subclass DIG12][List of Patents for class 303 subclass DIG12] DIG12 AIR OVER HYDRAULIC BRAKE SYSTEM