Permanent magnet coupling and transmission
First Claim
Patent Images
1. A coupler comprising:
- input and output shafts mounted independently of one another;
a rotary member containing permanent magnets;
two connected rotary electroconductive elements positioned on opposite sides of said rotary member and normally separated therefrom by respective air gaps;
said electroconductive elements and said rotary member being mounted on said shafts whereby rotation of said input shaft causes rotation of said output shaft, without direct transfer of vibration between said shafts, by way of magnetic action between the permanent magnets on said rotary member and said electroconductive elements, there being substantially no magnetic attraction between said magnets and said electroconductive elements when said shafts are stationary.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.
85 Citations
29 Claims
-
1. A coupler comprising:
-
input and output shafts mounted independently of one another; a rotary member containing permanent magnets; two connected rotary electroconductive elements positioned on opposite sides of said rotary member and normally separated therefrom by respective air gaps; said electroconductive elements and said rotary member being mounted on said shafts whereby rotation of said input shaft causes rotation of said output shaft, without direct transfer of vibration between said shafts, by way of magnetic action between the permanent magnets on said rotary member and said electroconductive elements, there being substantially no magnetic attraction between said magnets and said electroconductive elements when said shafts are stationary. - View Dependent Claims (3, 4)
-
-
2. A coupler comprising:
-
a rotary electroconductive unit mounted to rotate on a first rotary axis; a rotary magnet unit containing permanent magnets and mounted to rotate on a second rotary axis which is in spaced parallel relation to said first rotary axis; said units having an overlap zone in which they are separated by an air gap, said permanent magnets being arranged to pass through said overlap zone when said rotary disc is rotated. - View Dependent Claims (5, 6, 7)
-
-
8. A coupler assembly comprising:
-
input and output shafts; a magnetic unit containing permanent magnets mounted on one of said shafts to turn therewith; a second unit having two rotary electroconductive elements positioned on opposite sides of said magnetic unit and separated from said magnets by respective air gaps, said second unit being mounted on the other of said shafts to turn therewith, whereby rotation of said input shaft causes rotation of said output shaft by way of drag resulting from bridging of said gaps by magnetic flux from said magnets, said shafts being mounted independently of one another, there being substantially no magnetic attraction between said magnetic unit and said electroconductive elements when said shafts are stationary. - View Dependent Claims (29)
-
-
9. A coupler for first and second rotary shafts aligned on a rotary axis, said coupler comprising:
-
a rotary disc assembly containing permanent magnets and arranged to rotate about said axis; and first and second electroconductive rotary plates positioned at opposite sides of said disc assembly and separated therefrom by respective air gaps, said plates also being mounted to rotate about said axis, said first plate being mounted on said first shaft to rotate therewith, and said second plate being coupled to said second shaft to rotate therewith, and being slide-mounted on said second shaft; said disc assembly being arranged as an idler on said second shaft and also being slide-mounted thereon; and an adjustment mechanism for axially adjusting the position of said second plate on said second shaft to thereby vary the sum of the air gaps between said disc assembly and said electroconductive plates, there being magnetic action between said magnets and plates responsive to rotation of one of said shafts relative to the other shaft, and substantially no magnetic attraction between said magnets and plates when said shafts are stationary. - View Dependent Claims (10, 11, 12)
-
-
13. A coupler comprising:
-
a magnetic disc assembly concentric to a rotary axis and containing permanent magnets; electroconductive plates axially aligned on opposite sides of said disc assembly and normally separated therefrom by respective air gaps, said plates being coupled together outwardly away from said disc assembly; rotation means for rotating said disc assembly relative to said plates on said rotary axis without directly transferring vibration, there being substantially no magnetic attraction between said magnets and said plates when said rotation means is inactive; and means for adjusting said air gaps. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A coupler comprising:
-
rotary first and second electroconductive units arranged in spaced-apart coaxial relationship on a rotary axis, said first unit being arranged to be driven by a rotary power source and said second unit being structured to be coupled to a rotary load; a permanent magnet assembly positioned between said electroconductive units and separated therefrom by air gaps, said magnet assembly being mounted to rotate independently about an axis parallel to said rotary axis for transferring rotational energy from said first unit to said second unit by magnetic action between said magnet assembly and said units, there being substantially no magnetic attraction between said permanent magnet assembly and said electroconductive units when they are stationary. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification