Ball-worm transmission

Details Ball-worm transmission Ball-worm transmission

2006-05-30

2006-05-30

Ridley, Richard W. (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S089140, C074S424850, C074S458000, C384S045000

Reexamination Certificate

active

07051610

ABSTRACT:
A ball-worm transmission is provided which replaces the sliding friction of the classic worm mechanism with the rolling friction of spherical balls. The ball-worm transmission assembly includes a worm which defines a recirculation path, and a gear coupled to the worm via a plurality of spherical balls. The gear includes a plurality of teeth each having a thickness in a central plane of the gear and a lesser thickness towards both sides of the gear, so that a gap is defined between the teeth is larger towards both sides of the gear than in the central plane of the gear.

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