US3943391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic coupler having an electromagnetic winding
Assignee: Sulzer AG
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Filing: 1973-10-11
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Granted: 1976-03-09
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Expires: 1993-10-11
Abstract
Abstract The electromagnetic winding is made up of a plurality of insulated coils which are formed by a wound-up sheet metal strip. The strip is of a material having high magnetic permeability so that the coils eliminate the need for a magnetic core. The coils can be insulated from each other by a wound strip of insulating material such as paper or by means of a synthetic lacquer. The electromagnetic coupler can be of the synchronous or asynchronous type and can be in the form of a clutch or brake.
Inventors
- 👤 Henri Fehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:42
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/206; H01F5/00; H01F7/08; H02; H02K; H02K3/00; H02K3/04; H02K3/18; H02K49/00; H02K49/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
162 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein and a solid magnetizable core of said circuit; a drive shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a single ring of poles mounted on said rotor and disposed in said air-gap; a driven shaft spaced from said first shaft; a second rotor fixedly mounted on said driven shaft; a single ring of poles mounted on said second rotor and disposed about said first ring of poles; a substantially annular excitation winding disposed concentrically about said drive shaft and said core, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of said magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and a non-magnetizable part-winding concentrically about said excitation winding.
Claim 2
Dependent Claim
162 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein and a solid magnetizable core of said circuit; a drive shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a single ring of poles mounted on said rotor and disposed in said air-gap; a driven shaft spaced from said first shaft; a second rotor fixedly mounted on said driven shaft; a single ring of poles mounted on said second rotor and disposed about said first ring of poles; a substantially annular excitation winding disposed concentrically about said drive shaft and said core, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of said magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and a non-magnetizable part-winding concentrically about said excitation winding.
Claim 3
Dependent Claim
120 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; at least one shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; and a plurality of substantially annular excitation windings distributed annularly about said rotor to form at least a part of a ring of poles thereof in said air gap, each said winding being divided into two part-windings with the inner windings having coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with each said winding being magnetizable in a longitudinal direction thereof.
Claim 4
Dependent Claim
120 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; at least one shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; and a plurality of substantially annular excitation windings distributed annularly about said rotor to form at least a part of a ring of poles thereof in said air gap, each said winding being divided into two part-windings with the inner windings having coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with each said winding being magnetizable in a longitudinal direction thereof.
Claim 5
Dependent Claim
115 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; and a substantially annular excitation winding disposed concentrically about said shaft, said winding having an inner part-winding and an outer part-winding surrounding said inner part-winding, said outer part winding being made of non-magnetizable highly-conductive material and said inner-part winding being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof.
Claim 6
Dependent Claim
115 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; and a substantially annular excitation winding disposed concentrically about said shaft, said winding having an inner part-winding and an outer part-winding surrounding said inner part-winding, said outer part winding being made of non-magnetizable highly-conductive material and said inner-part winding being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof.
Claim 7
Dependent Claim
120 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and at least one short-circuit winding on each pole-shoe of a stator formed by said housing.
Claim 8
Dependent Claim
120 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and at least one short-circuit winding on each pole-shoe of a stator formed by said housing.
Claim 9
Dependent Claim
174 words
An electromagnetic coupler comprising a housing defining a stator part of an excitable magnetic circuit having an air-gap therein and pole shoes; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; a driven shaft coaxially spaced from said first shaft; a second rotor fixedly mounted on said driven shaft; and a ring of poles mounted on said second rotor and disposed in said air-gap to divide said air-gap into a three part air-gap with said first ring of poles, and wherein said pole-shoes of said stator formed by said housing have smooth surfaces opposite said air-gap.
Claim 10
Dependent Claim
174 words
An electromagnetic coupler comprising a housing defining a stator part of an excitable magnetic circuit having an air-gap therein and pole shoes; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; a driven shaft coaxially spaced from said first shaft; a second rotor fixedly mounted on said driven shaft; and a ring of poles mounted on said second rotor and disposed in said air-gap to divide said air-gap into a three part air-gap with said first ring of poles, and wherein said pole-shoes of said stator formed by said housing have smooth surfaces opposite said air-gap.
Claim 11
Dependent Claim
118 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and a solid piece of magnetically permeable material forming a part of said core.
Claim 12
Dependent Claim
118 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof; and a solid piece of magnetically permeable material forming a part of said core.
Claim 13
Dependent Claim
123 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; at least one short-circuit winding mounted in said housing about said ring of poles to define stator poles; and a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof.
Claim 14
Dependent Claim
123 words
An electromagnetic coupler comprising a housing defining part of an excitable magnetic circuit having an air-gap therein; a shaft rotatably mounted in said housing; a rotor fixedly mounted on said shaft; a ring of poles mounted on said rotor and disposed in said air-gap; at least one short-circuit winding mounted in said housing about said ring of poles to define stator poles; and a substantially annular excitation winding disposed concentrically about said shaft, said winding having a plurality of coils disposed in insulated manner with respect to each other, said coils being of a magnetically highly permeable strip material to form at least a part of a magnetizable core of said magnetic circuit with said winding being magnetizable in a longitudinal direction thereof.
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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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |