A hydraulic ram is a clever device invented over 200 years ago that can pump water uphill with no other external source of ...

Aircraft hydraulic systems were developed in the early 20th century as a practical means of transmitting robust mechanical power generated by a pump, usually driven by an engine, to a motor or ...

Hydraulic gear pumps are deceptively simple: just two gears rotating together, forcing the hydraulic oil from one side to the other where the teeth don’t meet, and thus providing the ability to ...