Patent US2384096A successfully refreshed from Google Patents.
US5834872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable magnetic coupler
Assignee: Magna Force Inc
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Filing: 1997-04-14
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Granted: 1998-11-10
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Expires: 2017-04-14
Abstract
Abstract An adjustable coupler has a group of magnet rotors separated by air gaps from a group of conductor rotors. The air gaps are adjusted by axial movement of one of the groups relative to the other to vary the slip of the coupler and achieve a constant load speed at various load torques.
Inventors
- 👤 Karl J. Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:50
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/046; H02K49/06; H02K49/065; H02K2213/00; H02K2213/09
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
207 words
An adjustable magnetic coupler comprising: first and second rotary shafts having a rotary axis; a group of two axially-spaced magnet rotors each containing a respective set of magnets; a group of two axially-spaced conductor rotors each having a nonferrous electroconductive ring spaced by an air gap from a respective one of said sets of magnets; the distance between the rotors of a first one of said groups being fixed, and such group being mounted on said first shaft to rotate in unison therewith; the rotors of the second one of the said groups being in concentric relation to said second shaft to be moveable axially relative to one another along said second shaft and to rotate together in unison therewith; a fifth rotor fixed to said second shaft at a location between the rotors of said second group of rotors; and a push-pull mechanism associated with said fifth rotor for axially moving a first rotor in said second group of rotors a selected distance in a selected axial direction and for axially moving the second rotor in said second group of rotors an amount equal to said selected distance, but in an axial direction opposite to said selected axial direction, whereby said air gaps are varied equally.
Claim 2
Dependent Claim
207 words
An adjustable magnetic coupler comprising: first and second rotary shafts having a rotary axis; a group of two axially-spaced magnet rotors each containing a respective set of magnets; a group of two axially-spaced conductor rotors each having a nonferrous electroconductive ring spaced by an air gap from a respective one of said sets of magnets; the distance between the rotors of a first one of said groups being fixed, and such group being mounted on said first shaft to rotate in unison therewith; the rotors of the second one of the said groups being in concentric relation to said second shaft to be moveable axially relative to one another along said second shaft and to rotate together in unison therewith; a fifth rotor fixed to said second shaft at a location between the rotors of said second group of rotors; and a push-pull mechanism associated with said fifth rotor for axially moving a first rotor in said second group of rotors a selected distance in a selected axial direction and for axially moving the second rotor in said second group of rotors an amount equal to said selected distance, but in an axial direction opposite to said selected axial direction, whereby said air gaps are varied equally.
Claim 3
Dependent Claim
39 words
A coupler according to claim 1 in which said mechanism includes a rocker unit which is centrally swing-mounted on said fifth rotor and has its opposite ends slidable interfitting with the two rotors in said second group of rotors.
Claim 4
Dependent Claim
50 words
A coupler according to claim 1 in which said push-pull mechanism includes a stationary reversible motor with a rotary output shaft, a push-pull element connected to said first rotor in said second group, and a device for converting rotary motion of said motor to endwise motion of said push-pull element.
Claim 5
Dependent Claim
75 words
A coupler according to claim 1 in which said mechanism includes a non-rotating push-pull device, and includes a thrust bearing assembly having a non-rotary element connected to said push-pull device for selective axial movement and having a rotary element which is connected to said first rotor in said second group of rotors, whereby linear movement of said push-pull device is transferred to like linear movement of said first rotor in said second group of rotors.
Claim 6
Dependent Claim
19 words
A coupler according to claim 1 in which said second group of rotors is carried by said fifth rotor.
Claim 7
Dependent Claim
22 words
A coupler according to claim 1 in which said second group of rotors is slide-mounted on pins projecting from said fifth rotor.
Claim 8
Dependent Claim
199 words
An adjustable magnetic coupler comprising: first and second shafts having coaxial rotary axes; a group of two axially-spaced magnet rotors each containing a respective set of permanent magnets; a group of two axially-spaced conductor rotors each having a nonferrous electroconductive ring spaced by an air gap from a respective one of said sets of magnets; the distance between the rotors of one of said groups being fixed, and such group having a first of its rotors mounted on said first shaft to rotate in unison therewith, and having the second of its rotors surrounding said second shaft and radially spaced therefrom by a clearance space; a support rotor fixed on said second shaft; the rotors of the second of said groups being slidably carried by said support rotor at opposite sides thereof to be moveable axially relative to one another along the rotary axis of said second shaft and to rotate together in unison with said support rotor and second shaft; and air gap adjustment means connected to the rotors of the second said group for selectively axially moving them relative to one another a selected distance, in opposite axial directions whereby said air gaps may be varied equally.
Claim 9
Dependent Claim
199 words
An adjustable magnetic coupler comprising: first and second shafts having coaxial rotary axes; a group of two axially-spaced magnet rotors each containing a respective set of permanent magnets; a group of two axially-spaced conductor rotors each having a nonferrous electroconductive ring spaced by an air gap from a respective one of said sets of magnets; the distance between the rotors of one of said groups being fixed, and such group having a first of its rotors mounted on said first shaft to rotate in unison therewith, and having the second of its rotors surrounding said second shaft and radially spaced therefrom by a clearance space; a support rotor fixed on said second shaft; the rotors of the second of said groups being slidably carried by said support rotor at opposite sides thereof to be moveable axially relative to one another along the rotary axis of said second shaft and to rotate together in unison with said support rotor and second shaft; and air gap adjustment means connected to the rotors of the second said group for selectively axially moving them relative to one another a selected distance, in opposite axial directions whereby said air gaps may be varied equally.
Claim 10
Dependent Claim
33 words
A coupler according to claim 7 in which said support rotor has pins projecting endwise thereof at opposite sides, and said rotors of the second of said groups are slide-mounted on said pins.
Claim 11
Dependent Claim
85 words
An adjustable magnetic coupler according to claim 8 in which the rotors of said one of said groups are conductor rotors each having its electroconductive ring engaged by a respective ferrous backing member; and in which the rotors of said second of said groups are magnet rotors, each having adjacent magnets of its set of permanent magnets arranged with their poles reversed, each said set being mounted in a respective carrier disc including a respective ferrous backing member engaged by the magnets of such set.
Claim 12
Dependent Claim
85 words
An adjustable magnetic coupler according to claim 7 in which said second mechanism includes rocker units each centrally pivotally mounted on said support rotor and slideably interfitting adjacent opposite ends with the rotors in said second group whereby axial movement of said first rotor in said second group is transferred in a reverse direction in like amount to said second rotor in said second group; and said rotors in said second group being slide-mounted on elements projecting from said support rotor between said rocker units.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-09 | 2002-05-11 | 2002-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-09 | 2006-05-11 | 2006-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-09 | 2010-05-11 | 2010-11-10 | $7700.00 | Window Closed / Lapsed |