Parts in this class of automobile hydraulic brakes, in particular: master cylinders, wheel cylinders, proportioning valves, pressure holding valves, hydraulic pulsating- pressure damping valves, proportioning and hydraulic pulsating-pressure damping valves, hydraulic boosters, master cylinders combined with vacuum boosters, and liquid pressure generating cylinders for automatic braking systems; pneumatic-hydraulic converting boosters; parts in this class of clutches for automobiles, in particular: master cylinders, operating cylinders, and hydraulic pulsating-pressure dampers

Brakes being electric command or pneumatic command braking systems for railway vehicles, incorporating: control valves, brake valves, load sensing valves, variable load valves, electromagnetic valves, brake controllers, brake command amplifiers, brake demand operating devices, load sensors, brake operating units, and brake cylinders; brakes for railway vehicles incorporating anti-skid systems, comprising: speed sensors, pressure control valves, and central processing units; tread brake units for railway vehicles; disk brake units and disks therefor for railway vehicles; brake shoes for railway vehicles; accessories for railway vehicles, in particular: windshield wipers and automatic diaphragm attaching/detaching devices for corridor connection; landing gears for magnetic levitation vehicles; landing gears for aircraft; drum brake assemblies, disk brake callipers, vacuum boosters; parts in this class of automobile pneumatic brakes, in particular: tread brake valves, hand brake valves, pneumatic pressure actuators, spring actuators for braking systems, relay valves, relay emergency valves, load sensing valves, pressure reducing valves, pressure quick release valves, pressure limiting and/or quick release valves, air supply selecting valves for maintaining minimum pressure at main air brake lines, levelling valves, and automatic adjusters of slack between brake shoe and drum; brakes for automobiles, incorporating anti-skid systems comprising: speed sensors, pressure control valves, and central processing units; hand carts for supporting a wheelchair at its horizontal position when on escalators; wheelchairs; electric wheelchairs; parts and accessories for electric wheelchairs, in particular: electric motors; motors for land vehicles; eddy current brake apparatus for railway vehicles; rail brake apparatus for railway vehicles; crawler drive units