Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael John Werson0
Robert William Beaven0
Date of Patent
June 26, 2007
0Patent Application Number
112690770
Date Filed
November 8, 2005
0Patent Primary Examiner
Patent abstract
A pump including a power rotor and an idler rotor, the rotors each being provided with a generally helical screw thread and being mounted for rotation in a housing such that the screw threads of the rotors mesh and rotation of one rotor causes rotation of the other rotor, the power rotor being connected to a driving means operation of which causes rotation of the power rotor, wherein the pitch of the threads is less than 1.6 times the outer diameter of the power rotor, the depth of the threads is less than or equal to 0.2 times the outer diameter of the power rotor, and the root diameter of the idler rotor is less than 0.31 times the outer diameter of the power rotor.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
