The invention relates to a fluid energy machine and a method for generating a fluid-volume flow and for compressing a fluid by means of the fluid energy machine according to the invention. The invention also relates to a method for refuelling a vehicle with a fluid using the method according to the invention for generating a fluid-volume flow and for compressing a fluid, and to the use of a fluid energy machine according to the invention for refuelling a motor vehicle. The fluid energy machine comprises a crank drive (20) and a drive device (10) that is mechanically connected to the crank drive (20), by means of which drive device a torque can be introduced into the crank drive (20), as well as a piston-cylinder unit (30), the piston (32) of which is mechanically connected to the crank drive (20). The drive device (10) comprises two electric motors (50, 60), the respective output members (51, 61) of which are mechanically connected to the crank drive (20).

A pump device for a brake system of a motor vehicle has a housing, a pressure piston which delimits a pressure chamber in the housing for producing hydraulic pressure mounted in the housing in a longitudinally displaceable manner, a return spring assigned to the pressure piston, a non-return valve which separates the pressure chamber from a pressure connection and only removes the separation when the hydraulic pressure in the pressure chamber is greater than in the pressure connection, and an electromagnetic actuator which includes an armature and an electrically energizable solenoid. The armature is arranged on the pressure piston and the solenoid in and/or on the housing. The pressure piston has an axial through-channel which opens out into the pressure chamber at one end and is assigned to the non-return valve at the other end.

The carbon free compressor pump system is a device that utilizes several pistons in a hydraulic or power press manner to compress gas or pump fluids. The device utilizes mechanical advantage of a pulley on the upstroke and uses a clutch device to utilize the gravitational force on the downstroke. In order to accomplish this the device includes a base that allows the compression process to take place and ensure there is only vertical movement. Further, the weight block ensures the system can utilize gravitational force on the downstroke. Further, the plurality of outtakes allows for the gas or fluids to flow out of the system once compressed or pumped. Furthermore, the conical tank takes the compressed gas or pumped fluid and further compresses the gas, increasing the pressure without moving parts. Thus, the device operates on carbon free electricity to compress gas and pump fluids.

The present invention relates to a device for dispensing liquid product, comprising a fixed part and a moving part; the fixed part comprising an intake orifice, a delivery orifice, a body comprising a cavity into which said orifices open, said cavity being able to partially house the moving part, the remaining volume forming an emptying chamber; the moving part being able to move partially in the cavity of the fixed part and comprising a piston, a piston driving element, an axial spring, a duct extending along the circumference of the piston, said duct allowing positions that allow fluidic communication between the emptying chamber and just one of said orifices and allowing switchover positions in which all fluidic communication between the emptying chamber and each of said orifices is forbidden, a cam able to convert the rotation of the drive element into an oscillatory-rotary movement of the piston. The axial spring is able to absorb energy during a liquid intake phase and to restore same during a liquid delivery phase, said spring being positioned around the piston which is on the moving part situated inside the cavity of the body.

A piston rod (27) for a spray fluid pump includes an interior pumping chamber (40), one or more channels (50) formed on the exterior of the piston rod, and one or more side bores (32) extending through the piston rod and in fluid communication with the interior piston chamber and one or more channels. The one or more channels (50) extend at least partially axially and are open along a length of the channel. The one or more channels are angled offset with respect to the reciprocation axis for imparting a rotational moment on the piston rod to cause rotation of the piston rod during reciprocation of the piston rod. A spray fluid pump comprising such piston rod is also disclosed.

A piston for a compressor is disclosed. The piston for the compressor compressing and discharging a refrigerant sucked into a cylinder includes a sliding portion disposed in the cylinder and having a suction space to receive the sucked refrigerant, a head portion coupled to the sliding portion, a compression space being formed at a front of the head portion and the suction space being formed at a rear of the head portion, the head portion comprising a suction port communicating the suction space with the compression space, a press-fit cap coupled to the front of the head portion, the press-fit cap comprising a suction hole connected to the suction port, and a first elastic member disposed between the press-fit cap and the head portion. A gas layer is formed between the head portion, the press-fit cap, and the first elastic member.

An apparatus for pumping a fluid from a fluid inlet to a fluid outlet is disclosed. The apparatus comprises: a spool axially movable within a cavity, wherein a first chamber is located at a first axial end of the cavity and a second chamber is located at a second axial end of the cavity, wherein the volume of the first chamber and the second chamber varies depending upon the axial position of the spool within the cavity; a valve movable between a first position and a second position, wherein in the first position the valve is configured to convey fluid from the fluid inlet to the first chamber and from the second chamber to the fluid outlet, and in the second position the valve is configured to convey fluid from the fluid inlet to the second chamber and from the first chamber to the fluid outlet.

A pump assembly is provided. The pump assembly includes a stator assembly and a piston assembly. The stator assembly includes a rotary winding and a linear winding. The piston assembly is positioned within the stator assembly. The piston assembly translates along a lengthwise axis of the stator assembly and rotates about the lengthwise axis of the stator assembly to create a pumping action.

A piston for a compressor is disclosed. The piston for the compressor compressing and discharging a refrigerant sucked into a cylinder includes a sliding portion disposed in the cylinder and having a suction space to receive the sucked refrigerant, a head portion coupled to the sliding portion, a compression space being formed at a front of the head portion and the suction space being formed at a rear of the head portion, the head portion comprising a suction port communicating the suction space with the compression space, a press-fit cap coupled to the front of the head portion, the press-fit cap comprising a suction hole connected to the suction port, and a first elastic member disposed between the press-fit cap and the head portion. A gas layer is formed between the head portion, the press-fit cap, and the first elastic member.

A pump device for a brake system of a motor vehicle has a housing, a pressure piston which delimits a pressure chamber in the housing for producing hydraulic pressure mounted in the housing in a longitudinally displaceable manner, a return spring assigned to the pressure piston, a non-return valve which separates the pressure chamber from a pressure connection and only removes the separation when the hydraulic pressure in the pressure chamber is greater than in the pressure connection, and an electromagnetic actuator which includes an armature and an electrically energizable solenoid. The armature is arranged on the pressure piston and the solenoid in and/or on the housing. The pressure piston has an axial through-channel which opens out into the pressure chamber at one end and is assigned to the non-return valve at the other end.