Bearings – Rotary bearing – Plain bearing
Patent
1992-01-24
1993-05-25
Hannon, Thomas R.
Bearings
Rotary bearing
Plain bearing
384215, F16C 2302, F16C 2702
Patent
active
052134210
ABSTRACT:
A belt drive train particularly useful for driving the beater bar of a vacuum cleaner. The drive train includes a driven shaft preferably driven by a motor, a drive shaft preferably connected to a beater bar and including a driven pulley, and an inelastic belt coupling the drive shaft to the driven shaft. Both the drive shaft and the driven shaft are supported on bearings. At least one of the bearing is mounted in a deflecting bearing mount so that the shaft supported by the bearing can be moved relative to the housing. As a result of this construction, the drive shaft and the driven shaft can be moved closer to one another to allow the inelastic belt to be passed over the drive shaft and the driven shaft. The elasticity of the deflecting bearing mount then causes a belt tension sufficient to allow the drive shaft to drive the driven shaft through the belt. The drive train can also include one or more self aligning sleeve bearings to compensate for the unbalanced belt tension force. The sleeve bearings include a shaft support surface, an outer periphery and a deflecting element supporting the shaft support surface on the outer periphery.
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