Abstract: A linear actuator system including a cylinder, a piston slidably received within the cylinder and defining a piston chamber and a rod chamber in the cylinder, wherein the piston includes a plurality of orifices therethrough that place the piston chamber and the rod chamber in fluid communication, and a sealing member movable between a closed position, wherein the sealing member restricts fluid flow through at least one of the plurality of orifices, and an open position, wherein the sealing member is less restrictive of fluid flow through the orifices. The plurality of orifices may include an always-open orifice that is not blocked by the sealing member when the sealing member is in the closed position.

Abstract: A supply circuit is provided for operation of an electromagnetic load of a vehicle provided with generator (dynamo) and battery, and more particularly for operation of at least one solenoid valve of a fuel-injection system of an internal-combustion engine of the vehicle. A circuit arrangement is proposed which connects the load (6) for a buildup of its excitation to the generator (3) and then establishes a connection to the battery (13) for the maintenance of sufficient excitation and interrupts the connection to the generator (3).