A transfer pump configured to move a hydraulic fluid in a hydraulic fluid management system of a hydraulic system of a vehicle including a transmission. In one embodiment, the transfer pump moves the fluid from a differential case to a hydraulic reservoir coupled to the transmission. The transfer pump is a positive displacement pump including an unloading device, such as a sealing plate, that is resiliently biased against the pump during a normal operation but is moved away from the pump upon the application of a pilot pressure. The result is an open chamber for the pump gears to turn without developing pressure, to thereby reduce parasitic losses.

A rotary pump is presented for use in a medicament delivery device, where the pump has a back plate having an inner surface and a rotor housing is positioned adjacent to the back plate having a peripheral wall. A front plate support is connected to the back plate and a flexible front plate is positioned between the front plate support and the rotor housing. The pump is rotated using a planetary gear transmission, where an eccentric shaft is operatively connected to the planetary gear mechanism. A rotor is rotationally fixed to the eccentric shaft and movably positioned within rotor housing. The rotor has three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve.

A hydraulic control device for an automatic transmission including a valve device. The valve device comprising a switching valve, featuring a switching component and a check valve. The switching valve is formed in a housing and is hydraulically connected to a first pressure adjusting device and a second pressure adjusting device along with a shift element for transferring a certain torque. The switching valve is formed as a directional seat valve.

A motor pump unit comprises an electric motor and a reversible internal gear machine. The latter has a multi-part housing in which an externally toothed pinion and an internally toothed hollow gear are arranged. A free space, in which a multi-part filler element is arranged, is configured between the gears. The filler element comprises radially movable sealing segments, between which a radial gap is configured. An axially movable sealing plate is arranged between axial faces of the gears and a housing part. This has a sealing plate control groove that is open to the faces of the gears and that can be pressurized, and which is open to the radial gap and located directly opposite thereto. The pinion segment and/or hollow gear segment has a radial sealing segment control channel that can be pressurized and extends transversely, is open to the radial gap, and ends directly in the radial gap.

A gerotor pump for conveying a fluid from an inlet pump chamber which is connected to an inlet to an outlet pump chamber, which is connected to an outlet, of the gerotor pump having a rotatable outer rotor; a rotatable inner rotor, which is arranged radially inside the outer rotor; a housing having a housing cover and a housing base, between which the outer rotor and the inner rotor are arranged; and at least one compensation plate which is arranged in each case axially between the outer rotor and inner rotor and the housing cover or the housing base, wherein the at least one compensation plate in the idle state of the gerotor pump is axially spaced apart from the outer rotor and the inner rotor by pretensioning.