Hydraulic gear pump or motor has at least one of gear wheels able to be moved radially to make the effective working thickness adjustable

摘要

The hydraulic gear pump or motor has a variable supply cross section and can come in various forms of pump and motor for driving or being driven by other similar pumps or motors. At least one (2) of the gear wheels used in it is able to be moved radially in order to make its effective working thickness adjustable.