Matches 1 - 7 out of 7


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US20060231062 Orbital engine  
An engine is disclosed including at least one piston which is positioned within a toroidal piston chamber. A method of operating an engine is disclosed wherein a piston is advanced in a toroidal...
US20100104462 PUMP OR MOTOR  
The invention relates to a pump or motor for liquid or gaseous media. The pump or motor has a shaft, which faces a working part, and has a common inclined sliding surface with the working part....
US20140079581 ROTOR FOR PUMP  
The present invention relates to a rotor for a vacuum pump having a roots pumping mechanism, the rotor comprising at least two hollow lobes, each lobe having an outer wall which defines a lobe...
US20140093412 VACUUM PUMP STATORS AND VACUUM PUMPS  
Combined booster and primary pump arrangements can be bulky and require separate supplies of purge gas and cooling water. In order to overcome this problem invention provides a vacuum pump in...
US20110165009 GATE ROTOR AND SCREW COMPRESSOR  
The present invention provides a screw compressor wherein, even if a gate rotor flexes owing to a temperature differential between a casing and a screw rotor during operation of a compressor, the...
US20100278678 SCREW COMPRESSOR  
A screw compressor includes a casing having a cylinder, a cylindrical-shaped screw rotor disposed in the cylinder, a gate rotor and a seal portion. The screw rotor has a plurality of spiral-shaped...
US20130089455 DELIVERY UNIT  
Delivery units are already known, having a drive rotor and an output rotor driven by the drive rotor, which are rotatably mounted in a rotor housing and interact in a meshing manner via spur...
Matches 1 - 7 out of 7