APARATO PARA SUMINISTRAR CANTIDADES VARIABLES DE UN FLUIDO

摘要

An apparatus is provided which is adapted to deliver or absorb variable amounts of torque or to deliver variable quantities of an incompressible fluid at a predetermined pressure. The device comprises a positive displacement pump capable of pumping a compressible fluid, an incompressible fluid or a mixture of a compressible fluid and an incompressible fluid together with appropriate pressure control and flow control mechanisms, check valve mechanisms and interconnecting duct means.