The invention relates to a rotary hydraulic machine which includes a casing (2) containing pistons actuated by an input shaft, said casing having a transverse front surface provided so as to engage with a mounting, and a transverse rear surface receiving a rear cover (4) supporting collectors connected to said pistons, the casing comprising side attachment tabs (30, 40) each having an axial bore (32) ending in a rear clamping surface, provided such as to receive an element for clamping said machine to the mounting, characterised in that at least one tab forms an axially elongate pad (40), the height of which is greater than half of the length of said casing included between the front and rear surfaces thereof.

A hermetic compressor may include a plurality of springs provided between a compressor body and a shell to elastically support the compressor body and to space the compressor body apart from an inner surface of a shell. A plurality of spring caps fixed to the inner surface of the shell and the compressor body may support ends of each of the plurality of springs. Each of the plurality of springs may be inclined with respect to an axial direction. Transverse stiffness of the support springs may be increased to thereby reduce vibration noise of the compressor body and prevent the compressor body from being in contact with the shell.

An insert of a cartridge for use with a liquid diffusing device is provided. The insert includes a body, an inlet provided in the body to receive diffused liquid generated within the cartridge during operation of the liquid diffusing device, an outlet zone defined at least in part by the body through which to discharge the diffused liquid toward an external environment, and a tortuous passage extending between the inlet and the outlet zone to aid in further reducing an average particle size of the diffused liquid as the diffused liquid moves through the tortuous passage. Removable cartridges for use with a diffusion device are also provided which include such an insert.

A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equipment may include an output shaft having an output flange connected to the driveshaft. The driving equipment may be configured to rotate the driveshaft to rotate the input shaft of the pump therewith. The vibration dampening assembly may include one or more flywheels operably connected to the input shaft and configured to rotate therewith.

In a refrigerant compressor comprising an overall housing with a motor housing portion, in which there is arranged a motor chamber having, provided therein, an electric motor comprising a stator and a rotor, and with a compressor housing portion which has a compressor unit, in order to be able to mount the stator as easily as possible it is proposed that the stator is mounted in the motor housing portion by means of supporting elements inserted into the motor housing portion, which supporting elements on the one hand abut against a stator-receiving surface of the motor housing portion and on the other hand surround the stator inserted into the supporting elements on its outer side and support it spring-elastically relative to the stator-receiving surface.

A hydraulic power unit has a housing, at least one pump element, a pressure collecting plate and an electric motor. The electric motor has at least one end shield, a stator and a rotor fixed on a rotor shaft. The at least one end shield has at least one partially circumferential functional recess extending between an outer and an inner circumferential surface of the end shield in the direction of a rotor shaft bearing seat. The functional recess thus formed permits the arrangement of functional elements at a central point of the hydraulic power unit in a space-efficient manner without negatively influencing the overall size of the hydraulic power unit.

An elastic body and a linear compressor including the elastic body are provided. The elastic body according to an aspect of the present disclosure includes a plurality of elastic units disposed circumferentially around an axis, each of the plurality of elastic units has a corresponding shape, each of the plurality of elastic units includes an elastic portion that is spirally formed while moving away from the axis, an outer portion disposed on an outside of the elastic portion in a radial direction thereof, and an inner portion disposed on an inside of the elastic portion in the radial direction thereof, the outer portion is adjacent to the outer portion of an adjacent elastic unit, the inner portion is adjacent to the inner portion of the adjacent elastic unit, and a slit is formed between the plurality of elastic portions.

The present disclosure provides a fracturing equipment. The fracturing equipment includes: a plunger pump, a main motor and a noise reduction device. The plunger pump is used for pressurizing liquid. The main motor is connected to the plunger pump by transmission for providing driving force to the plunger pump. The noise reduction device is constructed as a cabin structure and covers outside the main motor and isolates the main motor from the plunger pump. With the fracturing equipment according to the present disclosure, the fracturing equipment is driven by the main motor with relatively low noise during operation. The noise reduction device isolates the main motor from the outside, which can effectively reduce the noise intensity transmitted to the outside during operation, thereby achieve the effect of noise reduction. In addition, the plunger pump is isolated from the main motor by the noise reduction device, thus realizing isolation of high-pressure dangerous areas and ensuring safe operation.

A compressor is provided that is configured to suspend a compressor assembly from a string to significantly expand a speed range in which the compressor may be operated. The compressor may include a shell, and a compressor assembly disposed in the shell. The shell and the compressor assembly may be connected to each other by a string. The compressor assembly may be suspended from the shell by the string, and a tensile force may be generated at the string due to self-weight of the compressor assembly. A frame of the compressor assembly may not directly contact the shell.

A brush ring assembly including a brush ring, a brush holder coupled to the brush ring, and a brush spring. The brush spring includes a coiled spring body, a first end portion and a second end portion. The first end portion and the second end portion are disposed on opposing ends of the spring body. The first end portion, the second end portion, and the coiled spring body are coupled to the brush holder. The first end portion is bent across at least a portion of the coiled spring body in a direction toward the second end portion.