A clearance gage that includes an elongated shaft having a first end and a second end, a gage element connected to the first end of the elongated shaft, where the gage element defines a first width and a second width measured perpendicular to the elongated shaft, where the first width is larger than the second width, where a thickness of the elongated shaft is not more than the second width, where the first width defines a size of the gage element to assess a gap clearance between two components, and a marker connected to the elongated shaft, where the marker is positioned at a predetermined distance from the gage element along the elongated shaft, where the marker defines a marker width measured in a direction perpendicular to the elongated shaft that is greater than the second width of the gage element.

A commutator/manifold assembly controls a flow of hydraulic fluid in a hydraulic fluid system. The assembly includes a commutator having an offset design including an inner portion eccentrically encompassed within an outer portion, and offset commutator porting to control the hydraulic flow. A manifold includes manifold ports having a straight configuration by which walls defining the manifold ports run substantially along a longitudinal axis through an entirety of the manifold. The commutator is configured to rotate to sequentially align the commutator porting with differing portions of the manifold ports to control the flow. The commutator porting includes inner ports and outer ports that are isolated from each other by a commutator seal. A commutator ring has a guiding surface that guides rotation of the commutator. The rotation of the commutator provides a timed flow through the manifold ports straight through the manifold and without any directional flow restriction.

A scroll compressor includes a compressor housing containing an orbiting scroll member, a non-orbiting scroll member, bands disposed between the non-orbiting scroll member and the compressor housing, a suction chamber, a discharge chamber, and one or more intermediate injection chamber defined by the bands. The non-orbiting scroll member includes one or more intermediate injection ports fluidly connecting the one or more intermediate injection chambers to at least one compression pocket formed by the intermeshed scroll members. A heating, ventilation, air conditioning, and refrigeration system includes a refrigerant circuit with a condenser, an expander, an evaporator, and the scroll compressor fluidly connected. A method of making a scroll compressor includes placing an upper portion of a compressor housing over a non-orbiting scroll member with bands disposed therebetween, and interference fitting the upper portion onto the non-orbiting scroll member via the bands.

The present disclosure provides a rotary device and a rotary system, to which a press-actuated gate valve mechanism is applied. In the rotary device and the rotary system, a pressure fluid chamber is disposed on an outside of a gate valve groove so that an action of a gate valve is controlled by means of a fluid pressure. Based on the rotary device and the rotary system, the present disclosure also provides a fluid motor, a compressor, a pump and a compressor corresponding to the rotary device and the rotary system.

The present disclosure provides a compressor and an air conditioner. The compressor includes a housing; a first rotating shaft mounted in the housing; a connecting assembly sleeved on the first rotating shaft; and a first rotor assembly including a first rotor and a second rotor coaxially disposed on the connecting assembly. The connecting assembly carries the first rotor and the second rotor to rotate about the first rotating shaft together. The connecting assembly is configured to limit the relative positions of the first rotor and the second rotor, such that there exists a clearance between the first rotor and the second rotor. The present disclosure can maintain a clearance between the first rotor and the second rotor without increasing the number of components of the compressor.

A screw pump comprising a housing defining a chamber and two screw rotors. Wherein each screw rotor comprises a rotor shaft and at least two displacement elements connected with the rotor shaft. Each displacement element having at least one helical protrusion. One of the displacement elements is a suction-side displacement element arranged in a suction-side section of the chamber. Another one of the displacement elements is a pressure-side displacement element arranged in a pressure-side section of the chamber. The suction-side displacement element is designed tapering in the conveying direction. The clearance between the pressure-side displacement element and the pressure-side section of the chamber at least partly decreases in the conveying direction. Furthermore, a screw rotor, a method of manufacturing a screw rotor and a use of a screw pump or a screw rotor.

A rotary internal combustion engine includes a rotor housing having a peripheral wall circumscribing a rotor cavity and a rotor disposed within the rotor cavity. A side housing is secured to the rotor housing and a plate defines a seal running surface for the rotor. The plate is disposed between a portion of the side housing and the rotor housing and at least one shim is disposed between the plate and the side housing for spacing the plate apart from contact with the side housing.

A blower assembly includes, but is not limited to, a blower housing defining a blower chamber and including a gas inlet and a gas outlet; a first rotor positioned within the blower chamber and adapted for rotation therein, the first rotor including a first shaft and at least two lobes defining a first lobe profile; and a second rotor positioned within the blower chamber and adapted for rotation therein, the second rotor including a second shaft and at least two lobes defining a second lobe profile, wherein the first and second rotors are formed from a metal having a coefficient of thermal expansion from about 1 (10.sup.?6 in/in*K) to about 13 (10.sup.?6 in/in*K), and wherein at least one of the outer surface of the first rotor, the outer surface of the second rotor, or the blower chamber includes a coating.

A scroll compressor includes fixed and movable scrolls having a fixed and movable side plates and fixed and movable side laps to form first and second compression chambers. The fixed-side plate includes a discharge port and a relief hole extending from the front face through to the back face. The relief hole communicates for a predetermined amount of time with each of the first and second compression chambers and is shared by the first and second compression chambers. The front face of the movable-side plate includes a recessed part allowing the second compression chamber and the discharge port to communicate. The second compression chamber, during a latter stage of compression, and the discharge port communicating via a gap formed between a tip of the fixed-side lap and the recessed part before communicating via a side face gap formed between the fixed-side lap and the movable-side lap.

A compressor (20) comprises: a housing assembly (22) having a plurality of ports including a suction port (24) and a discharge port (26); a male rotor (30) mounted for rotation about an axis (500); a female rotor (32) enmeshed with the male rotor and mounted in the housing for rotation about an axis (502) for drawing a flow from the e suction port, compressing the flow, and discharging the compressed flow through the discharge port. The housing assembly comprises: a motor case (54); and a cover (60) bearing the suction port. The cover comprises a unitary piece forming: a mounting portion (63) mounted to an adjacent end (55) of the motor case, said adjacent end being large enough to pass the motor; and a fitting portion (62) extending to a rim (66) at the suction port and bearing an external groove (200).