Permanent magnet coupler with adjustable air gaps
First Claim
Patent Images
1. An adjustable magnetic coupler comprising:
- first and second rotary shafts having parallel rotary axis,a cage mounted on said first shaft and surrounding said axis;
a magnet rotor mounted on said second shaft and extending radially within said cage from said second shaft, said magnet rotor containing permanent magnets;
two electro-conductive units movably carried by said cage and spaced by air gaps from said magnets at opposite ends of the magnet rotor; and
gap adjustment means for controlling the axial location of said electro-conductive units axially relative to said cage and magnet rotor to selectively vary said air gaps.
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Abstract
A cage carrying two axially adjustable conductors is mounted on one shaft and a rotor is mounted on a second coaxial shaft to occupy a position between the conductors. Permanent magnets on the rotor have poles spaced by air gaps from the conductors. The air gaps are adjusted by sliding the conductors toward and away from one another along slide members on the cage by use of adjustment units engaging the conductor rotors. Alternatively, the conductors can be mounted on the rotor, and the magnets can be adjustably mounted on the cage.
53 Citations
24 Claims
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1. An adjustable magnetic coupler comprising:
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first and second rotary shafts having parallel rotary axis, a cage mounted on said first shaft and surrounding said axis; a magnet rotor mounted on said second shaft and extending radially within said cage from said second shaft, said magnet rotor containing permanent magnets; two electro-conductive units movably carried by said cage and spaced by air gaps from said magnets at opposite ends of the magnet rotor; and gap adjustment means for controlling the axial location of said electro-conductive units axially relative to said cage and magnet rotor to selectively vary said air gaps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An adjustable magnetic coupler comprising:
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first and second rotary shafts having a rotary axis; a mounting unit on said first shaft and surrounding said axis; a magnet rotor mounted on said second shaft and containing permanent magnets; electro-conductive units slidably carried by said mounting unit and spaced by air gaps from said magnets at opposite ends of the magnet rotor; and adjustment bolt units engaging said electro-conductive units for selectively moving them axially relative to said mounting unit and magnet rotor to thereby control the width of said air gaps. - View Dependent Claims (10, 11)
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12. An adjustable magnetic coupler comprising:
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first and second coaxial rotary shafts having a rotary axis; a cage mounted on said first shaft and surrounding said rotary axis; a magnet rotor mounted on said second shaft and extending radially within said cage, said magnet rotor presenting a plurality of permanent magnets providing two sets of poles facing oppositely in parallel relation to said rotors axis; and first and second conductor units slideably mounted on said cage for axial movement and providing electro-conductive elements in said cage spaced by air gaps from respective ones of said sets of poles; and rotary gap controlling devices engaging said conductor units for selectively moving said conductor units axially in opposite directions relative to said magnet rotor and cage responsive to turning of the gap controlling devices. - View Dependent Claims (13, 14, 15, 16)
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17. An adjustable magnetic coupler comprising:
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first and second coaxial rotary shafts having a rotary axis; a cage mounted on said first shaft and surrounding said rotary axis; a magnet rotor mounted on said second shaft and extending radially within said cage, said magnet rotor presenting a plurality of permanent magnets providing two sets of poles facing oppositely in parallel relation to said rotary axis; first and second conductor units slideably mounted on said cage for axial movement and providing electroconductive elements in said cage spaced by air gaps from respective ones of said sets of poles; and turnable gap adjustment devices extending between said conductor units in parallel relation to said rotary axis, said devices being operative to move said conductor units in unison in opposite directions responsive to turning of said devices. - View Dependent Claims (18)
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19. An adjustable magnetic coupler comprising:
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two shafts having coaxial rotary axes, a first group having two sets of magnet poles, a second group having two conductor elements spaced by respective air gaps from respective ones of said sets of poles, a cage mounted on one of said shafts and having two axially spaced mounting elements carrying one of said groups, a rotor mounted on the other one of said shafts and carrying the other one of said groups, and a mechanism carried by said cage for axially moving one of said groups relative to said mounting elements such as to vary said air gaps. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification