A drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating bowl-shaped part called a brake drum.
Drum brake (upper right) with the drum removed (lower left, inside facing up), on the front of a Ford Falcon Sprint
A rear drum brake on a Kawasaki W800 motorcycle
Back plate made in the pressing shop.
Cut-away section of a wheel cylinder.
A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction.
Disc brake on a motorcycle
Rendering of a drum brake
Single pivot side-pull bicycle caliper brake
Brake booster from a Geo Storm.