Abstract: A variable displacement vane pump includes at least two regulation chambers to provide a regulating force to the cam ring to counter the force applied to the cam ring by a regulating spring and reduce pulsation in the output working fluid from the pump. A first regulation chamber is part of the pump outlet and is in fluid communication with the outlet port of the pump via a passage which allows the pump to be fabricated from a diecast process or the like. A second regulation chamber is connected to the first chamber via an orifice which reduces the pressure of working fluid supplied from the first chamber to the second. The pump outlet need not overlie the pump outlet. Further, a pump with an inlet port with a relatively large initial cross-sectional flow area inhibits cavitation of the working fluid when the pump is operated at higher operating speeds.

Abstract: A variable displacement vane pump includes at least two regulation chambers to provide a regulating force to the cam ring, to counter the force applied to the cam ring by a regulating spring, to reduce pulsation in the output working fluid from the pump. A first one of the chambers is part of the pump outlet and is in fluid communication with the outlet port of the pump via a passage which allows the pump to be fabricated from a diecast process oath like. A second regulation chamber is connected to the first chamber via an orifice which reduces the pressure of working fluid supplied from the first chamber to the second. The configuration and design of pumps in accordance with the present invention allows for flexible packaging for the pump, as the outlet need not overlie the pump outlet. Further, a pump with an inlet port with a relatively large initial cross-sectional flow area is taught to inhibit cavitation of the working fluid when the pump is operated at higher operating speeds.

Abstract: A swing-down cup holder closure and release apparatus for releasably locking a cup tray portion of a swing-down cup-holder in a stowed position includes a latch that is supported either on the cup tray or a supporting structure such as an automotive seat or instrument panel. A latch receiver is supported on the other of the cup tray and the supporting structure. The latch and latch receiver are supported in positions on the cup tray and supporting structure, respectively, such that the latch engages the latch receiver when the cup tray is moved to the stowed position. The latch disengages and releases the cup tray from the stowed position in response to a predetermined amount of pressure applied inwardly to the cup tray. This allows an automotive vehicle passenger compartment occupant to release the cup holder with a single pressing motion and without having to directly manipulate the latch.