the friction surface being grooved

Full Title

Fluid-actuated clutches > in which the fluid actuates a piston incorporated in the clutch > the clutch having friction surfaces > with clutch members exclusively moving axially > the friction surface being grooved

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL

Subclass:

COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES