The present invention relates to a piston-cylinder assembly for a radial piston compressor. The piston-cylinder assembly comprises a drive shaft with a cylindrical eccentric for guiding the movement of the piston to a top dead center position. A cylindrical piston guide ring guides the movement of the piston to a bottom dead center. Both the cylindrical eccentric and the piston guide ring are connected to the piston by means of respective concave/convex contact surfaces for the positive transmission of the forces.

The present invention relates to a piston-cylinder assembly for a radial piston compressor. The piston-cylinder assembly comprises a drive shaft with a cylindrical eccentric for guiding the movement of the piston to a top dead center position. A cylindrical piston guide ring guides the movement of the piston to a bottom dead center. Both the cylindrical eccentric and the piston guide ring are connected to the piston by means of respective concave/convex contact surfaces for the positive transmission of the forces.

A piston compressor has a piston guided in a compressor cylinder, wherein the piston and the compressor cylinder form a compressor chamber for compressing a fluid. A shaft is provided that rotates around its axis. A lifting element is arranged eccentrically to the axis of the shaft and is provided fixed to the shaft. The lifting element and the piston are configured in such way that the piston performs a movement between a maximum and a minimum lifting position when the shaft rotates around its axis.

A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a housing cover fixed to the housing. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. The housing cover defines an intermediate-fluid port in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a valve. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. An intermediate-fluid port is in selective fluid communication with the valve. The intermediate-fluid port is in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port through the valve. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

A compressor includes a cylinder, a sleeve assembly disposed in the cylinder, and a piston disposed within the sleeve assembly. The sleeve assembly includes a sleeve and a collar. The sleeve and the collar cooperate to define a plurality of ports. The piston is movable between a first position and a second position and is configured to compress a working fluid from a suction pressure at the first position to a discharge pressure at the second position. The piston and the sleeve assembly cooperate to selectively permit working fluid at an intermediate pressure to enter the cylinder. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

A reciprocating piston air compressor has a first cylinder assembly, a second cylinder assembly, and a plurality intake valves and exhaust valves associated with each of the cylinder assemblies. Each cylinder assembly has a cylinder bore and a piston disposed in the cylinder bore. Each cylinder bore has a first end having a circumference defining an area. Each piston has a first end having a circumference defining an area. The valves associated with the first cylinder assembly are disposed within the circumference of the bore and/or the piston. The valves associated with the second cylinder assembly are disposed partially within and partially outside of the circumference of the bore and/or the piston.

An autoclaving microplate washing system for cells and non-adhering three-dimensional (3D) cell cultures includes one or more pumps for controlling the dispensing of washing fluid and the evacuation of fluid from microwells to gently wash the cells. A method of controlling the autoclaving microplate washing system includes controlling the one or more pumps for dispensing and evacuation.