Who invented hydraulic drum brakes?
In 1905, the working medium water was changed into oil, and further improved.
in London water as a medium to form hydraulic press used in industry, the birth of the world the first hydraulic press.
Hydraulic and pneumatic transmission fluid as the transmission is a new technology based on seventeenth Century Pascal put forward the principle of hydrostatic pressure to drive the development of the 1795 British Joseph o (Joseph Braman 1749-1814) Braman
