US3593052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine commutator with coil end slats and method of making same
Assignee: Vernitron Corp
•
Filing: 1969-08-18
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Granted: 1971-07-13
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Expires: 1989-08-18
Abstract
Abstract Fine coil wire ends from an armature are connected to a metal commutator ring by first cutting fine diagonal slots in the ring at the corner of the outer face and periphery thereof, one slot for each wire end. The fine wire ends are then inserted in their corresponding slots, and such wire end is welded in place under heat and pressure, by placing the ring on an annular electrode and applying another electrode to the face of the ring sequentially at each slot, while conducting welding current between such electrodes thereby causing the metal adjacent each slot to fuse. Thus, upon removal of electrodes the fused metal cools and solidifies, leaving the fine wire terminals connected to the ring.
Inventors
- 👤 Leslie L Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:04
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/32; H01R43/00; H01R43/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A method of connecting a fine wire from an armature to a metal commutator ring member having a corner, comprising cutting a fine diagonal slot in said member at said corner, inserting a portion of said fine wire in said slot, and fuse welding said wire portions in place by applying a pressure and an electrical current to the sides of said slot thereby fusing the sides of said slot around said wire portions.
Claim 2
Independent Claim
74 words
A method of connecting a fine wire from an armature to a metal commutator ring member having a corner, comprising cutting a fine diagonal slot in said member at said corner, inserting a portion of said fine wire in said slot, and fuse welding said wire portions in place by applying a pressure and an electrical current to the sides of said slot thereby fusing the sides of said slot around said wire portions.
Claim 3
Dependent Claim
52 words
A method as defined in claim 1, in which said fine slots are located in the corner of the outer face and inner periphery of said ring, said fine wire portions are the terminals of the coils in an armature and a corresponding slot is provided for each fine coil wire terminal.
Claim 4
Dependent Claim
90 words
In combination with an armature and commutator apparatus of the type wherEin an armature has a plurality of coils and said commutator is comprised of a nonmagnetic segmented ring, each segment being electrically insulated from each other segment, the improvement which comprises: each segment having a fine diagonal slot extending from a corner of the outer face and inner periphery of said segment, and a wire terminal from one of said coils fuse welded therein by passing an electric current and simultaneously applying pressure to the sides of said slot.
Claim 5
Dependent Claim
90 words
In combination with an armature and commutator apparatus of the type wherEin an armature has a plurality of coils and said commutator is comprised of a nonmagnetic segmented ring, each segment being electrically insulated from each other segment, the improvement which comprises: each segment having a fine diagonal slot extending from a corner of the outer face and inner periphery of said segment, and a wire terminal from one of said coils fuse welded therein by passing an electric current and simultaneously applying pressure to the sides of said slot.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |