US4677743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding method
Assignee: ZF International UK Ltd
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Filing: 1986-05-29
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Granted: 1987-07-07
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Expires: 2006-05-29
Abstract
Abstract A winding method for winding the coils of a stator structure which has one or more intermediate coils and a pair of end coils having a reduced number of turns. The coil or coils may be directly connected to supply terminals and the coils are connected in series. The method involves using a dummy connector to form a connection point between the two end coils, all the coils being wound from a single length of wire with the dummy connector forming the start and finish point for the winding operation.
Inventors
- 👤 Frank M. Logie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:55
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/076; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
209 words
A method of winding the coils of a stator structure of an electromagnetic device of the kind in which the stator structure is of cylindrical form and defines a plurality of axially spaced circumferential pole pieces, adjacent pole pieces defining a groove therebetween and grooves, the coils being located in the grooves respectively and connected to a pair of electric supply terminals at one end of the stator structure, the end coils having a reduced number of turns and being connected in series with each other, the method comprising providing a dummy connector terminal at said one end of the stator structure, connecting the wire to be used in winding the coils to said dummy connector terminal, laying the wire in a slot extending longitudinally along the stator structure, winding the end coil further from said one end of the stator structure and returning the wire to one of the supply terminals directly or by way of an intermediate coil, then winding the remaining intermediate coils starting with the one furthest from said one end of the stator structure and then winding the end coil at or nearest said nearest one end of the stator structure, one end of said end coil being connected to said dummy connector terminal.
Claim 2
Independent Claim
209 words
A method of winding the coils of a stator structure of an electromagnetic device of the kind in which the stator structure is of cylindrical form and defines a plurality of axially spaced circumferential pole pieces, adjacent pole pieces defining a groove therebetween and grooves, the coils being located in the grooves respectively and connected to a pair of electric supply terminals at one end of the stator structure, the end coils having a reduced number of turns and being connected in series with each other, the method comprising providing a dummy connector terminal at said one end of the stator structure, connecting the wire to be used in winding the coils to said dummy connector terminal, laying the wire in a slot extending longitudinally along the stator structure, winding the end coil further from said one end of the stator structure and returning the wire to one of the supply terminals directly or by way of an intermediate coil, then winding the remaining intermediate coils starting with the one furthest from said one end of the stator structure and then winding the end coil at or nearest said nearest one end of the stator structure, one end of said end coil being connected to said dummy connector terminal.
Claim 3
Dependent Claim
52 words
A method according to claim 1 in which the stator structure carries an even number of coils and prior to winding the end coil adjacent said one end of the stator structure the wire is looped around the supply terminals, the portion of the wire connecting said supply terminals subsequently being severed.
References Cited (Backward Citations)
US3636990A
Cited
US3724515A
Cited
US4238699A
Cited
US4326139A
Cited
US4635865A
Cited
US4553121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |