(under subclass 41) Clutches in which the engaging element is a wedging pawl or block.
SEE OR SEARCH CLASS
188, Brakes,
82.7+, for one-way brakes employing a pivoting or flexing detent, and subclasses 82.8+ for one-way brakes in which retrograde rotation of a rotating element forces a member in jamming position between converging surfaces one of which is the rotating element to cause a braking.