Rotary expansible chamber devices inventions 06/06

20060140802 - Multicylindrical rotary compressor, compression system, and freezing device using the compression system: In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which first and second rotary compression elements perform compression works and a second operation mode in...

20060140803 - Apparatus for preventing vacuum state in scroll compressor: An apparatus for preventing a vacuum state in a scroll compressor including a hermetic container divided into a high pressure space and a low pressure space; a fixed scroll provided inside the hermetic container; and an orbiting scroll orbiting in a state of being interlocked with the fixed scroll, comprises:...

20060140804 - Apparatus for varying capacity in scroll compressor: An apparatus for varying the capacity in a scroll compressor, comprising: an orbiting scroll provided with a wrap filling portion which is stepped at a certain height, extending the entire inside of a wrap from an outer end portion of the wrap; a fixed scroll provided with a stepped wrap...

20060140805 - Electric oil pump: An object of the invention is to provide an electric oil pump with greatly improved operation, increased endurance, and extended service life of an Oldham's coupling connecting a drive shaft that rotates a rotor in a pump housing and a motor output shaft in a motor housing. The electric pump...

20060140806 - Scroll fluid machine: In a scroll fluid machine, a stationary scroll fixed to a housing engages with an orbiting scroll to form a sealed chamber between the orbiting and stationary scrolls. Fluid in the sealed chamber is compressed or decompressed with revolution of the orbiting scroll with respect to the stationary scroll. A...

20060140807 - Scroll-type compressor assembly means: A scroll-type compressor assembly means has one or multiple positioning holes provided on a positioning post of the frame, and a positioning element to fix a retaining spacer to the frame for the retaining spacer to limit the stationary scroll and to define an ideal spacing between the positioning post...

20060140808 - Rotor position control for rotary machines: Improved rotor position control for rotary machines allows for positioning mechanisms which are more compact, relative to the stroke of the machine. A crank having a center shaft which extends through the rotor chamber is rotatably mounted in a forward in wall of the chamber. An eccentric shaft of the...

20060140811 - Gear pump having optimal axial play: The invention relates to a pump, in particular an oil pump, for internal combustion engines, comprising a pump case, with the pump case comprising a pump lid and a pump flange, with at least one toothed wheelset being arranged between the pump lid and the pump flange and the pump...

20060140810 - Motor-mounted internal gear pump and electronic device: The invention relates to a pump which assures high reliability while maintaining the functionality as a compact, inexpensive motor-mounted internal gear pump. The pump includes an inner rotor with teeth on its outer surface, an outer rotor with teeth on its inner surface to engage with the inner rotor teeth,...

20060140809 - Trochoid oil pump: A trochoid oil pump, which enables the endurance to be increased and the reduction of discharge pulsations and noise to be achieved, and in which those results can be realized with a very simple structure. An interdental space constituted by an inner rotor and an outer rotor having trochoid tooth...

20060133944 - Scroll machine with brushless permanent magnet motor: A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment member extends through the...

20060133945 - Scroll machine having counterweights with changeable cavity: A balancing system for different compressors utilizes a counterweight having a common exterior configuration. The mass of the counterweight is optimized for each compressor by changing the size of a recess located in the counterweight. In one embodiment, the recess is an arcuately shaped recess; and in another embodiment, the...

20060133946 - Hydraulic machine: A hydraulic pump or motor includes a body having a chamber and a rotor rotatably mounted within the chamber. The chamber and rotor are shaped to define one or more rise regions, fall regions, major dwell regions and minor dwell regions between walls of the chamber and the rotor. The...

20060127257 - Capacity-changing unit of orbiting vane compressor: Disclosed herein is a capacity-changing unit of an orbiting vane compressor that is capable of selectively accomplishing compression or communication in inner and outer compression chambers of a cylinder through simple manipulation of a valve, thereby easily changing the capacity of the orbiting vane compressor. The capacity-changing unit includes a...

20060127256 - Compression unit of orbiting vane compressor: Disclosed herein is a compression unit of an orbiting vane compressor. The compression unit comprises a circular operation space formed in a cylinder, the circular operation space having opposite ends, a circular vane disposed in the operation space for performing an orbiting movement, the circular vane having opposite ends, a...

20060127258 - Slider adapting apparatus for orbiting vane compressors: Disclosed herein is a slider adapting apparatus for orbiting vane compressors. A circular vane of an orbiting vane is disposed in an annular space defined in a cylinder. A pair of sliders is coupled with the circular vane for performing reciprocating movement along the annular space while being in tight...

20060127259 - Rotary screw machine and method of transforming a motion in such a machine: The invention relates to a rotary screw machine of volume type comprising a body (30) having a main axis X, two members (10, 20), wherein a first one (20) surrounds a second one (10). Said first member (20) is hinged in said body (30) and is able to swivel on...

20060127260 - Scroll compressor having frame fixing structure and frame fixing method thereof: Disclosed are a scroll compressor having a frame fixing structure and a frame fixing method of the scroll compressor. The scroll compressor comprises an upper frame installed at an inner upper portion of a hermetic container; a fixed scroll fixed to an upper portion of the upper frame; and an...

20060127261 - Scroll compressor with complex fillets between eccentric pin and shaft shoulder: A scroll compressor has an eccentric pin that extends forwardly of a rotating shaft. The eccentric pin generally has a curved outer portion and a flat outer portion. Each of the flat and curved outer portions have fillets that are formed to merge the eccentric pin portions into an end...

20060127262 - Oil discharge preventing apparatus of scroll compressor: An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving motor; and a lower fixed oil...

20060127263 - Back pressure apparatus for orbiting vane compressors: Disclosed herein is a back pressure apparatus for orbiting vane compressors that is capable of reducing excessive axial force applied to an orbiting vane due to high-pressure refrigerant gas introduced to the lower surface of a vane plate of the orbiting vane. The back pressure apparatus comprises a back pressure...

20060127264 - Multi-vane device: A device for varying the pressure of a gas. The device contains a rotatable disk with an axis of rotation, a top surface and a bottom surface; at least two vanes are radially connected to the rotatable disk. The device also contains a first stator with a first centerline disposed...

20060115371 - Scroll compressor: In a scroll compressor, an outer wall curve of a scroll lap of a fixed scroll and an inner wall curve of a scroll lap of an orbiting scroll are formed of involute curves whose basic circle radius is defined as “a”, an inner wall curve of the scroll lap...