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Rotary Expansible Chamber Devices > Multistage > Interengaging Rotary Members Interengaging Rotary MembersInterengaging Rotary Members patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.06/21/07 - 20070140881 - Multistage compression type rotary compressor An object is to provide a high inner pressure type multistage compression rotary compressor capable of avoiding beforehand generation of vane fly of a second rotary compression element and realizing a stabilized operation, the rotary compressor includes a communication path which connects an intermediate pressure region to a region having ... 03/29/07 - 20070071625 - Blending pump assembly A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to inject a proportional amount of a second fluid into the flow of the first fluid. The ... 03/01/07 - 20070048162 - Multistage root type pump The invention reduces power consumption and makes rotor with ease. As illustrated in FIG. 2, a multistage roots pump (1) in the invention including upstream rotors (R1a, R1b, R2a, R2b) having multiple teeth, supported by a pair of revolving shafts (A1, A2); and downstream rotors (R3a, R3b˜R5a, R5b) having identical ... ### FreshPatents.com Support |