F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/12, 103/79
F16J 15/40 (2006.01)
Patent
CA 1258274
-22- SEALING MEMBER FOR ROTATING SHAFT AND METHOD OF SEALING THEREWITH Abstract of the Disclosure An improved sealing sleeve for the rotating drive shaft of a gear 5 pump or other fluid conveying system has an internal axial bore for receiving the shaft, an intermediate cavity formed in the bore and oppositely-handed helical channels extending in the bore on opposite sides of the cavity. The inward heli- cal channels are of a hand relative to the shaft rotation for effectively pumping viscous fluid entering the annular spacing between the shaft and sleeve toward 10 the cavity while the oppositely-handed outward helical channels effectively resist and overcome such pumped fluid flow, creating a static containment of the viscous fluid to produce a viscous seal about the shaft. Cooling fluid is conveyed through an annular passageway about the outward helical channels to solidify any viscous fluid entering the adjacent region of the outward channels to produce an outward 15 essentially mechanical seal about the shaft.
471610
Maag Pump Systems Textron Inc.
Ridout & Maybee Llp
LandOfFree
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