A rotary pump, the rotational direction of which can preferably be switched, featuring: a housing including a pump space featuring an inlet into a low-pressure region of the pump space for a fluid to be pumped and an outlet from a high-pressure region of the pump space for the fluid to be pumped; at least one rotor which forms delivery cells in the pump space; a bearing; and a sealing stay which axially faces the at least one rotor and separates the low-pressure region from the high-pressure region in the rotational direction of the at least one rotor; and featuring at least one lubricant feed, in the sealing stay, which feeds a fluid, as a lubricant, from at least one of the delivery cells to the bearing.

A pump for conveying a liquid, having a pump housing that has at least one inlet and at least one outlet, an eccentric element being rotatably arranged in said pump housing and surrounded by a deformable membrane, the deformable membrane and pump housing delimiting at least one conveyor path from the at least one inlet to the at least one outlet and forming at least one seal for the conveyor path, and the seal being able to be displaced along the conveyor path by a movement of the eccentric element. Between the eccentric element and the deformable membrane, a spring layer is arranged by the eccentric element and deformable membrane are tensioned relative to one another.

A pump for conveying a liquid, having a pump housing that has at least one inlet and at least one outlet, an eccentric element being rotatably arranged in said pump housing and surrounded by a deformable membrane, the deformable membrane and pump housing delimiting at least one conveyor path from the at least one inlet to the at least one outlet and forming at least one seal for the conveyor path, and the seal being able to be displaced along the conveyor path by a movement of the eccentric element. Between the eccentric element and the deformable membrane, a spring layer is arranged by the eccentric element and deformable membrane are tensioned relative to one another.

A hydraulic motor assembly capable of precise control having a housing, a hydraulic mounting surface located in the housing, a cylinder block rotatably disposed on the hydraulic mounting surface, a motor shaft engaged to the cylinder block and supported proximate to a first end, a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft, an output shaft rotationally engaged to the plurality of cooperating gears, a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal indicative of the rotational speed of the one of the plurality of cooperating gears.

A hydraulic motor assembly capable of precise control having a housing, a hydraulic mounting surface located in the housing, a cylinder block rotatably disposed on the hydraulic mounting surface, a motor shaft engaged to the cylinder block and supported proximate to a first end, a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft, an output shaft rotationally engaged to the plurality of cooperating gears, a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal indicative of the rotational speed of the one of the plurality of cooperating gears.

A rotary vane pump or rotary vane motor including a rotatable rotor being eccentrically arranged within a rotatable cylindrical housing sleeve defining a freely rotary working chamber which takes out the relative sliding movement and friction inside to outer housing bearing. A partition element of a vane hingedly attached to the rotor; wherein the partition element travels with the rotor following the orbit of the housing incident to the expansion and contraction of the working space performing as a true dynamic radial seal; The rotor assembly along with the housing assembly being sandwiched between end-plates to fulfill dynamic side seal; The end-plates may contain pressure and non-pressure ports as well as holes for shaft, bearings, brackets and mounting hardware.

A hermetic compressor including a casing; a motor inside the casing, and including a rotor and stator; a drive shaft that rotates with the rotor; a compression unit below the motor to compress refrigerant and discharge compressed refrigerant to an inside of the casing; and an oil blocking guide above the motor to rotate with the rotor. The oil blocking guide includes an oil blocking plate formed in a disk shape, an oil guide part extending outward and upward from an edge of the oil blocking plate, and a support part connecting the oil blocking plate to the drive shaft and space the oil blocking plate from the rotor. The oil blocking plate and the oil guide part block upward movement of oil passing through the motor, and guide the oil to an inner circumferential surface of the casing through centrifugal force while the oil blocking guide is rotating.

A hermetic compressor including a casing; a motor inside the casing, and including a rotor and stator; a drive shaft that rotates with the rotor; a compression unit below the motor to compress refrigerant and discharge compressed refrigerant to an inside of the casing; and an oil blocking guide above the motor to rotate with the rotor. The oil blocking guide includes an oil blocking plate formed in a disk shape, an oil guide part extending outward and upward from an edge of the oil blocking plate, and a support part connecting the oil blocking plate to the drive shaft and space the oil blocking plate from the rotor. The oil blocking plate and the oil guide part block upward movement of oil passing through the motor, and guide the oil to an inner circumferential surface of the casing through centrifugal force while the oil blocking guide is rotating.

A sealing device includes a relatively dimensionally stable, elongated friction and/or wear element and an elastically-deformable elongated sealing element which rests lengthwise on the friction and/or wear element. The friction and/or wear element encompasses the sealing element at the ends of the friction and/or wear element.

A sealing device includes a relatively dimensionally stable, elongated friction and/or wear element and an elastically-deformable elongated sealing element which rests lengthwise on the friction and/or wear element. The friction and/or wear element encompasses the sealing element at the ends of the friction and/or wear element.