Patent ID: 6481391
Filing Date: 2002-11-19
Classification: F01P,F02B,F04D

Abstract:
A magnetic driving pump for a vehicle internal combustion engine, comprising:a driving shaft; a driven shaft mounted coaxially with said driving shaft; and a pair of permanent magnets, said pair of permanent magnets being one of 4-pole and 2-pole permanent magnets where magnetic poles adjacent in a peripheral direction are different and are respectively fixed to said driving shaft and said driven shaft, respectively, and being magnetized to have alternate N poles and S poles 90 degrees or 180 degrees in phase in a peripheral direction around an axis of said drive shaft; wherein each of said pair of permanent magnets is ring shaped, one of said permanent magnets being provided within an inner perimeter of a cup-shaped rotary member fixed to said drive shaft, and the other one of said permanent magnets is fixed to said driven shaft with at least a portion coaxially covered by said rotary member.