A fluid regulator includes a housing that includes a flow path extending from an inlet to an outlet. A poppet valve is disposed within the flow path and that selectively allows a flow of fluid from the inlet to the outlet. A regulating interface adjusts a spring tension that is exerted toward the poppet valve. The regulating interface defines a boundary of the flow path and the spring tension defines a regulated flow of fluid through the flow path from the inlet to the outlet. A fluid purge mechanism is positioned within the regulating interface. The fluid purge mechanism adjusts the boundary of the flow path and manipulates the poppet valve to a maximum operating position to define a purging flow of the fluid from the inlet to the outlet.

A counter including a housing disposed about a tubular creating a space therebetween, a piston disposed in the space and responsive to pressure up events in the tubular to compress a transfer chamber, a supply chamber fluidly attached to the transfer chamber; a trigger chamber fluidly attached to the transfer chamber wherein sequential pressure events cause the piston to move fluid from the supply chamber to the trigger chamber. A counter including a fluid incrementing configuration, an activation member in fluid force communication with the fluid incrementing configuration, the activation member having a first position where a fluid port is blocked and a second position where the fluid port is unblocked, the fluid port being fluid pressure connected to a tool to be actuated when the activation member is in the second position.

The invention relates to an actuator (1) for an automated or automatic transmission, having a cylinder housing (3), a piston unit (2), and a piston rod (13), wherein the piston unit (2) is coupled to the piston rod (13) and is arranged movably in the cylinder housing (3) along an axial longitudinal axis (4), wherein the piston unit (2) separates from each other two pressure chambers (8, 9) of variable volume in the cylinder housing (3), by means of which pressure chambers the piston unit (2) can be loaded with compressed air on both sides, wherein the two pressure chambers (8, 9) are connected to a valve unit (14) which is able to switch the pressurization or purging of each of the two pressure chambers (8, 9), and wherein an end stop damping device for damping at least one end stop of the piston unit (2) is arranged in the actuator (1). In order to improve the end stop damping device, a pneumatically and a mechanically operating damping stage are provided.

A fluid pressure cylinder. A first stepped section having a greater diameter than a cylinder chamber is formed at one end of a cylinder tube constituting a fluid pressure cylinder. A disc-shaped head cover is inserted into the cylinder chamber. The one end is pressed and plastically deformed by a staking jig to form a deformed section, and the head cover is affixed within the first stepped section by the deformed section. As a result of this configuration, the head cover can be more firmly affixed while the sealing effect between the cylinder tube and the head cover is ensured. This eliminates need for a seal means and an engagement means which is used to affix the head cover, and consequently, the number of parts can be reduced.

An actuator includes a housing defining an inlet port, a piston and a return spring disposed within the housing, and an elastically deformable element. The return spring is configured to apply a biasing force to the piston to move the piston to a spring return position. A first fluid pressure applied to the inlet port moves the piston against the biasing force of the return spring to a first actuated position in which the piston indirectly engages a stop portion of the actuator housing. A second fluid pressure, greater than the first fluid pressure, applied to the inlet port moves the piston against the elastically deformable element to compress the elastically deformable element to move the piston to a second actuated position beyond the first actuated position.

A fluid regulator includes a housing that includes a flow path extending from an inlet to an outlet. A poppet valve is disposed within the flow path and that selectively allows a flow of fluid from the inlet to the outlet. A regulating interface adjusts a spring tension that is exerted toward the poppet valve. The regulating interface defines a boundary of the flow path and the spring tension defines a regulated flow of fluid through the flow path from the inlet to the outlet. A fluid purge mechanism is positioned within the regulating interface. The fluid purge mechanism adjusts the boundary of the flow path and manipulates the poppet valve to a maximum operating position to define a purging flow of the fluid from the inlet to the outlet.

In a fluid pressure cylinder, cylindrical bodies are connected to both ends of a cylinder tube, and latching rings are disposed detachably in interior of the cylindrical bodies. A head cover and a rod cover, which are accommodated in the cylinder tube, are fixed by the latching rings. Recesses, which are recessed diametrally inward, are provided on outer circumferential surfaces of the head cover and the rod cover, respectively. First and second fluid ports open respectively in the recesses, and a pressure fluid is supplied and discharged through the first and second fluid ports.

An actuator (1) for an automated or automatic transmission has a cylinder housing (3), a piston unit (2), and a piston rod (13). The piston unit (2) is coupled to the piston rod (13) and is arranged movably in the cylinder housing (3) along a longitudinal axis (4). The piston unit (2) separates two pressure chambers (8, 9) of variable volume in the cylinder housing (3). The pressure chambers are configured to load the piston unit (2) with compressed air on both sides. The two pressure chambers (8, 9) are connected to a valve unit (14) for switching between pressurization and purging of each of the two pressure chambers (8, 9). An end stop clamping device for damping at least one end stop of the piston unit (2) is arranged in the actuator (1). A pneumatically and a mechanically operating damping stage are provided improve the end stop damping device.

A pistonless double-acting cylinder apparatus comprises a piston rod member, a first cylinder member disposed on the piston rod member, a second cylinder member disposed on an end surface of the first cylinder member, a tie rod which connects the first cylinder member and the second cylinder member, nuts provided on both ends of the tie rod, a first sealing ring located between the first cylinder member and the second cylinder member, a first cushion and a second cushion disposed on the piston rod member. The piston rod member comprises a piston rod left section, a first sealing gasket disposed on the piston rod left section, a piston rod middle section disposed on an end surface of the first sealing gasket, a second sealing gasket disposed on an end surface of the piston rod middle section, a piston rod right section disposed on the second sealing gasket.

A brake device for a hydraulic motor vehicle brake system without a vacuum booster, with a housing with at least one pressure chamber arranged therein, with a cylinder piston which can be axially moved in an actuation direction by an actuating rod unit coupled to the cylinder piston in order to generate brake pressure, wherein a rigid stop is provided for the cylinder piston which defines the non-actuated starting position of the cylinder piston. In order to provide an improved brake device of the above-mentioned type, which permits simple and reliable detection of the zero point and simultaneously has reduced noise emission on the return, a damping element is provided which permits a mechanical decoupling of the actuating rod unit from the cylinder piston in a release direction opposite the actuation direction by reversible deformation.