Inner tube
part · 1855 · Industrial Revolution
The rubber bladder of a ball or tyre (Goodyear).
Principles and materials it uses
- Vulcanized rubber — is made of. Rubber.
- Compressed air — uses. Air.
Where it is used
- Football — is part of. An inflatable bladder.
- Pneumatic tyre — is part of. Tube-type tyres.
- Bicycle wheel — is part of. Inside the tyre is an inner tube: the air pumped into it makes the wheel soft.
- Ball — is part of. A chamber with air.