US3794865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing a rotating movement by means of at least one pulsating driving force
Assignee: Johnson Electric Switzerland AG
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Filing: 1972-07-10
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Granted: 1974-02-26
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Expires: 1992-07-10
Abstract
Abstract A device for producing a rotating movement by means of at least one pulsating or alternating driving force acting on a displaceable element such as a tumbler disc or wobble disc for imparting to this element a motion such that a track of this element rolls along a track of another element, a slow differential rotating movement between such elements being thereby produced due to a difference in length of the tracks on the elements. The tracks may be toothed rims meshing with each other. The device is particularly usefull in synchronous motors, wherein the pulsating driving force is produced by means of an exciting coil connected to an alternating current source.
Inventors
- 👤 K Guttinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/06; H02K41/065; F; F16; F16H; F16H23/00; F16H23/10; F16H31/00; F16H35/00; F16H35/18
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
182 words
A device for producing a rotating movement by means of at least one externally applied pulsating driving force, comprising parts adapted to roll off upon each other along rolling tracks of different length, one of said parts being movable with its track against the track of the other part, means applying said external driving force to said one part along a single line of application, means cooperating with said one part and responsive to movement of same for impeding movement of said one part in a direction displaced with respect to said line of application of said driving force such that said one part is applied with its track against the track of the other part outside the line of application of said driving force under the combined action of said driving force and said impeding means, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
Claim 2
Independent Claim
182 words
A device for producing a rotating movement by means of at least one externally applied pulsating driving force, comprising parts adapted to roll off upon each other along rolling tracks of different length, one of said parts being movable with its track against the track of the other part, means applying said external driving force to said one part along a single line of application, means cooperating with said one part and responsive to movement of same for impeding movement of said one part in a direction displaced with respect to said line of application of said driving force such that said one part is applied with its track against the track of the other part outside the line of application of said driving force under the combined action of said driving force and said impeding means, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
Claim 3
Dependent Claim
35 words
A device according to claim 1, comprising resetting means keeping said one part in a rest position with its track spaced from the track of the other part during the absence of a driving force.
Claim 4
Dependent Claim
28 words
A device according to claim 1, wherein said one part is symmetrically formed and means are provided for applying driving forces in symmetrically located places of the part.
Claim 5
Dependent Claim
60 words
A device according to claim 1, wherein said one part driven by said driving force is a tumbler member loosely suspended at a point of suspension, said driving force acting onto said tumbler member at a point of application, and said line of force being defined by said point of suspension and said point of application of the driving force.
Claim 6
Dependent Claim
15 words
A device according to claim 4, wherein said tumbler member has a circular rolling track.
Claim 7
Dependent Claim
29 words
A device according claim 5, wherein said parts comprise toothed rolling tracks, the number of teeth of the one track exceeding the number of teeth of the other track.
Claim 8
Dependent Claim
38 words
A synchronous motor comprising the elements as claimed in claim 1 and having permanent magnets mounted on said one part, and means for producing an alternating magnetic field acting onto said permant magnets for producing said driving force.
Claim 9
Dependent Claim
36 words
A synchronous motor according to claim 7, comprising two magnets disposed with opposite polarity on a tumbler disc or wobble disc in diametrally opposite position in order to produce a pair of opposite alternating driving forces.
Claim 10
Dependent Claim
43 words
A synchronous motor according to claim 9, wherein said permanent magnets are accomodated in an annular air gap formed in the core of an exciting coil, said magnets being adapted for circumferential displacement along said air gap upon rotation of said one part.
Claim 11
Dependent Claim
24 words
A synchronous motor according to claim 9, comprising two parts disposed symmetrically relatively to an exciting coil, each of said parts carrying permanent magnets.
Claim 12
Dependent Claim
19 words
A device according to claim 1, wherein said impeding means comprises means coupling said one part to a shaft.
Claim 13
Dependent Claim
14 words
A device according to claim 11, wherein said coupling means is a leaf spring.
Claim 14
Dependent Claim
40 words
A device according to claim 1, wherein said one part exposed to the driving force is an elastically deformable body adapted to roll off with its rolling track along the track of said other part due to periodical elastic deformation.
Claim 15
Dependent Claim
25 words
A device according to claim 15, wherein the resonance frequency of said elastically deformable part is tuned to the frequency of the pulsating driving force.
Claim 16
Dependent Claim
19 words
A device according to claim 1, comprising means for producing said auxiliary forces by means of an eddy-current brake.
Claim 17
Dependent Claim
20 words
A device according to claim 1, wherein said one part is non-rotatably mounted while said other part is rotatably mounted.
Claim 18
Independent Claim
167 words
A device for producing a rotating movement by means of at least one pulsating driving force, comprising parts adapted to roll off upon each oTher along rolling tracks of different length, the one of said parts being applicable with its track against the track of the other part by said driving force, a mass distribution on said one part for producing an auxiliary force due to inertia of which the line of application does not coincide with the line of application of said driving force such that said one part is applied with its track against the track of the other part outside the line of application of said driving force under the combined action of said driving force and auxiliary force, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
Claim 19
Independent Claim
167 words
A device for producing a rotating movement by means of at least one pulsating driving force, comprising parts adapted to roll off upon each oTher along rolling tracks of different length, the one of said parts being applicable with its track against the track of the other part by said driving force, a mass distribution on said one part for producing an auxiliary force due to inertia of which the line of application does not coincide with the line of application of said driving force such that said one part is applied with its track against the track of the other part outside the line of application of said driving force under the combined action of said driving force and auxiliary force, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
Claim 20
Independent Claim
206 words
A device for producing a rotating movement by means of at least one external pulsating driving force, comprising parts adapted to roll off upon each other along rolling tracks of different length, one of said parts being a tumbler disc adapted to execute a tumbling motion round a suspension point with its track against the track of the other part, means applying said driving force to said disc only along a single axis passing through said suspension point, eddy-current brake means for producing an auxiliary force of which the line of application does not coincide with said axis, said brake means including at least one permanent magnet cooperating with said disc and reacting to movement of same to produce said auxiliary force, said one part being moved with its track against the track of the other part outside said axis and the line of application of said driving force under the initial combined action of said driving force and auxiliary force, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
Claim 21
Independent Claim
206 words
A device for producing a rotating movement by means of at least one external pulsating driving force, comprising parts adapted to roll off upon each other along rolling tracks of different length, one of said parts being a tumbler disc adapted to execute a tumbling motion round a suspension point with its track against the track of the other part, means applying said driving force to said disc only along a single axis passing through said suspension point, eddy-current brake means for producing an auxiliary force of which the line of application does not coincide with said axis, said brake means including at least one permanent magnet cooperating with said disc and reacting to movement of same to produce said auxiliary force, said one part being moved with its track against the track of the other part outside said axis and the line of application of said driving force under the initial combined action of said driving force and auxiliary force, the driving force and the reaction upon application of said tracks against each other initiating a rolling motion of said parts upon each other along said tracks, this rolling motion causing relative rotation between said parts due to the difference in length of said tracks.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |