Gearing stage
First Claim
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1. Gearing stage, comprising:
- a first wheel; and
a second wheel driven by the first wheel, wherein one of the wheels has at least one profiled rib which is circumferential in at least one thread and an other one of the wheels has multiple-start profiled ribs which extend at least over a fraction of a circumference thereof, the profiled ribs of one of the wheels being at least one of;
ferromagnetic and permanently magnetic and the profiled ribs of the other one of the wheels being permanently magnetic, the wheels being disposed substantially axially parallel to provide profile backs of the profiled ribs opposite one another with a relatively small air gap.
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Abstract
In a gearing stage, a driving first wheel has a ferromagnetic profiled rib which is circumferential in one thread, whereas a second driven wheel has permanently magnetic profiled ribs which are disposed in a multi-start manner and which extend only over a fraction of the circumference and are opposite the ferromagnetic profiled rib with a small air gap. The driving wheel drives the driven wheel via a magnetic reluctance coupling.
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Citations
11 Claims
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1. Gearing stage, comprising:
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a first wheel; and a second wheel driven by the first wheel, wherein one of the wheels has at least one profiled rib which is circumferential in at least one thread and an other one of the wheels has multiple-start profiled ribs which extend at least over a fraction of a circumference thereof, the profiled ribs of one of the wheels being at least one of;
ferromagnetic and permanently magnetic and the profiled ribs of the other one of the wheels being permanently magnetic, the wheels being disposed substantially axially parallel to provide profile backs of the profiled ribs opposite one another with a relatively small air gap. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A gearing stage, comprising:
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a driving gear having at least one magnetic rib disposed circumferentially thereon, wherein said magnetic ribs do not touch; a driven gear having at least one magnetic rib disposed circumferentially thereon, wherein rotation of said driving gear causes rotation of said driven gear due to magnetic coupling between said at least one magnetic rib of said driving gear and said at least one magnetic rib of said driven gear; and at least one extra rib, disposed on one of the gears, said at least one extra rib providing mechanical engagement between the gears in response to the driven gear lagging the driving gear. - View Dependent Claims (8, 9, 10, 11)
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Specification