Patent ID: 6095769
Filing Date: 2000-08-01
Classification: F01M,F04B,Y10T

Abstract:
A pump including a first enclosure defined by a first outer surface and a second enclosure defined by a second outer surface, a pumping mechanism and an electromotive unit operable to drive the pumping mechanism, and a diagnostic sensor for detecting flow within a flow path of the second enclosure, the electromotive unit including a solenoid assembly having a solenoid coil, and an armature assembly, the solenoid coil and diagnostic sensor being sealed within the first enclosure, the second enclosure including an elongated armature sleeve supportable within a central bore of the solenoid coil and an armature slidably supported within the armature sleeve, the armature assembly and the pump mechanism being accommodated within the second enclosure, the pumping mechanism moving with the armature when the solenoid assembly is energised, wherein said first outer surface is located exterior to the second outer surface and said second outer surface is located exterior to the first outer surface.