DAMPER SPRINGS: Describes a set of springs in a clutch plate that provide a cushion in the event of the vehicle hitting a sudden bump.
DIAPHRAGM SPRING CLUTCH: Describes a standard clutch used in most vehicles fitted with manual transmission in which the diaphragm spring keeps the pressure plate in contact with the friction plate.
DIAPHRAGM SPRING: Describes a type of disc-shaped spring tapering fingers pointed inward used in some clutches. When the clutch is engaged, the Diaphragm spring forces the pressure plate against the clutch disc.
ELECTROMAGNETIC CLUTCH: Describes any clutch in which a magnetic force is used to hold the drive-in engagement, such as that in the compressor drive of an air-conditioning system.
FRICTION CLUTCH: Describes a conventional clutch that transmits the power of the drive through mechanical friction, as opposed to fluid coupling
FRICTION LINING: Describes the wear-resistant friction material used for clutch linings.
FRICTION PLATE: Describes a driven plate of a clutch to which the friction lining is attached.
HUB PLATE: Describes the central element of a clutch driven plate.
INTERMEDIATE DRIVE PLATE: Describes a disc placed between the driven plates in a twin-plate clutch.
LOCK-UP CLUTCH: Describes a clutch that can be automatically engaged in a lock-up torque converter to prevent slipping losses.
MULTIPLE DISC CLUTCH: Describes a clutch fitted with several clutch discs, allowing for a decreased bell housing while still maintaining efficiency in automatic transmissions or power distribution systems of 4WD vehicles,
ONE WAY CLUTCH: Describes a mechanical clutch that transmits power in one direction of rotation only.
OVERRUNNING CLUTCH STARTER DRIVE: Describes a mechanically engaged starter drive that, when the engine starts, allows the overrunning clutch to operate until the drive is mechanically disengaged.
ROLLER CLUTCH: Describes a type of clutch operated through a series of rollers placed in ramps, providing drive power in one direction, although it is liable to slip if performed in the opposite direction.
SINGLE-PLATE CLUTCH: Describes a standard form of clutch with a single driven plate.
THROWOUT BEARING: Describes a part of the clutch activated by the pedal that allows the clutch to engage and disengage. If a vehicle idles in gear with the clutch pedal depressed, the clutch will wear out prematurely instead of shifting to neutral gear. 
TWIN-PLATE CLUTCH: Describes a type of clutch fitted with two driven plates separated by an intermediate drive plate, producing higher torque capacity.
WET CLUTCH: Describes a type of friction clutch fitted with an oil bath to dissipate heat.

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