US3602814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulated electric coil having barrier layer
Assignee: Westinghouse Electric Corp
•
Filing: 1969-03-07
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Granted: 1971-08-31
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Expires: 1989-03-07
Abstract
Abstract A random-wound electric coil has one or more barrier layers dividing the random-wound coil into two or more parts for the purpose of improving the resistance of the coil to electric surges.
Inventors
- 👤 James F Quirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:15
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/127; G; G01; G01R; G01R11/00; G01R11/02; H01F41/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
An induction meter comprising: an electromagnet having spaced voltage and current poles, and an electrically conductive disc mounted for rotation between said spaced voltage and current poles, a coil assembly on said voltage pole including an insulating spool having a tubular sleeve and first and second flange members disposed at opposite ends of the tubular sleeve, and only one electrical coil of insulated wire disposed about the tubular sleeve, said electrical coil having first and second axial ends disposed adjacent to but spaced from the first and second flange members, respectively, an insulating barrier member disposed to divide said electrical coil into first and second electrically connected concentric portions, with the turns of each of the first and second portions being random wound, said barrier member having a free length parallel with the axis of the spool which is longer than the distance between said flange members, and solid encapsulating means disposed about said electrical coil, including portions between the first and second axial ends of the electrical coil and the adjacent first and second flange members, respectively, with the insulating barrier member extending into the solid encapsulating means at each axial end of the electrical coil.
Claim 2
Dependent Claim
197 words
An induction meter comprising: an electromagnet having spaced voltage and current poles, and an electrically conductive disc mounted for rotation between said spaced voltage and current poles, a coil assembly on said voltage pole including an insulating spool having a tubular sleeve and first and second flange members disposed at opposite ends of the tubular sleeve, and only one electrical coil of insulated wire disposed about the tubular sleeve, said electrical coil having first and second axial ends disposed adjacent to but spaced from the first and second flange members, respectively, an insulating barrier member disposed to divide said electrical coil into first and second electrically connected concentric portions, with the turns of each of the first and second portions being random wound, said barrier member having a free length parallel with the axis of the spool which is longer than the distance between said flange members, and solid encapsulating means disposed about said electrical coil, including portions between the first and second axial ends of the electrical coil and the adjacent first and second flange members, respectively, with the insulating barrier member extending into the solid encapsulating means at each axial end of the electrical coil.
Claim 3
Dependent Claim
14 words
A meter as claimed in claim 1 wherein said barrier is a polyester material.
Claim 4
Dependent Claim
14 words
A meter as claimed in claim 1 wherein said barrier is polyethylene terephthalate resin.
Claim 5
Dependent Claim
72 words
A meter as claimed in claim 1 in combination with a second barrier layer of insulating material surrounding the second one of said parts, said coil having a third part comprising a plurality of turns of said electric wire random wound about the second barrier layer, the encapsulating material between each flange and the adjacent end of the coil being in interlocking engagement with the adjacent edge of the second barrier layer.
Claim 6
Dependent Claim
27 words
The induction meter of claim 14 wherein the turns of the electrical coil are substantially equally divided between the first and second portions by the barrier member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |