US PATENT SUBCLASS 701 / 82
.~.~ Antispin, traction control, or drive slip control

Current as of: June, 1999
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701 /   HD   DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION

1  DF  VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATION {19}
70  DF  .~ Indication or control of braking, acceleration, or deceleration {3}
82.~.~ Antispin, traction control, or drive slip control {8}
83  DF  .~.~.~> Control of brake pressure
84  DF  .~.~.~> Control of engine torque {2}
87  DF  .~.~.~> Control of transmission torque
88  DF  .~.~.~> Restricting differential operation
89  DF  .~.~.~> Four wheel drive vehicle
90  DF  .~.~.~> Having particular slip threshold, target slip ratio, or target engine torque determining means
91  DF  .~.~.~> Integrated with antiskid or other vehicle control system (e.g., cruise control, suspension)
92  DF  .~.~.~> Fail-safe system

DEFINITION

Classification: 701/82

Antispin, traction control, or drive slip control:

(under subclass 70) Braking, acceleration or deceleration control wherein the electrical data processing system or calculating computer utilizes information received concerning vehicle speed, wheel speed, or any derivative thereof in determining activation of the appropriate speed altering action to control an undesired rotation of a vehicle's wheel due to wheel acceleration.

(1) Note. Spin control is the process of controlling the vehicle to enhance the driveability of the vehicle during starting or acceleration of the vehicle by manipulating at least one of (a)brake pressure, (b) engine torque, or (c) transmission torque.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, for undesired vehicle wheel skidding or locking control

wherein such skidding or locking is caused by excessive wheel deceleration.

SEE OR SEARCH CLASS

180, Motor Vehicles,

197, for antispin systems combined with vehicular structure. 303, Fluid-Pressure Brake and Analogous Systems,

91+, for antispin control which includes specific structure to fluid-pressure brakes.

361, Electricity: Electrical Systems and Devices,

238, for electrical speed signal circuitry used for antispin detection and which does not include significant data processing techniques.