F - Mech Eng,Light,Heat,Weapons – 16 – C
Patent
F - Mech Eng,Light,Heat,Weapons
16
C
308/20
F16C 17/00 (2006.01) F16C 17/08 (2006.01) F16C 33/10 (2006.01) G11B 5/53 (2006.01)
Patent
CA 1132170
TITLE OF THE INVENTION: Rotary Mechanism with Axial Bearings ABSTRACT OF THE DISCLOSURE: A rotary mechanism with axial bearings comprising a shaft having at least one free end, a housing rotatably fitted over said shaft with a lubricant being contained in the space defined between them, a first axial position control means for controlling the relative axial position between the shaft and the housing, the first axial position control means comprising a thrust axial bearing, which is referred to as "the micro- groove bearing" in the specification, comprising a projection extended from the free end of the shaft or its opposing bear- ing surface of the housing coaxially of the shaft and radial grooves formed in the face of the free end of the shaft or its opposing bearing surface of the housing in such a way that upon relative rotation between the shaft and housing, the pressure may be built-up in the oil film therebetween, whereby they may be separated from each other; and a second axial position control means which may buildup the pressure or may exert the force in such a direction that the clearance between the projection and its opposing bearing surface of the "micro-groove bearing" may be reduced or the free end of the shaft and the opposing surface of housing may be moved toward each other. The shaft or housing may be started and driven at low torques and the wear problems of bearings may be eliminated. Furthermore the relative position between the shaft and housing may be accurately maintained within an allowable tolerance range regardless of the position of the rotary mechanism. - 1 -
343739
Gowling Lafleur Henderson Llp
Matsushita Electric Industrial Co. Ltd.
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