US3579770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming tubular mica capacitor
Assignee: Aerovox Corp
•
Filing: 1969-09-29
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Granted: 1971-05-25
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Expires: 1989-09-29
Abstract
Abstract This disclosure relates to the art of electric capacitors of the mica type and more particularly relates to a method of forming a capacitor comprising a rigid tubular member of insulating material in which is positioned a substantially rectangular mica capacitor section that is retained in fixed position with terminal leads protruding from opposed ends of the tubular member by filling the latter with a thermosetting resin.
Inventors
- 👤 William H O'mara
- 👤 Owen J Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/224; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
The method of forming a tubular mica capacitor having a substantially rectangular capacitor section with oppositely extending terminal leads and a tubular outer casing, which comprises the steps of positioning one end of the tubular casing on an associated cylindrical boss so as to rise vertically therefrom, positioning the capacitor section completely in the casing with the lower one of the terminal leads of the capacitor section in an axial opening in the boss, supporting the other terminal lead of the capacitor section extending from the upper end of the tubular casiNg so that the two terminal leads are vertically aligned, capping the upper end of the tubular casing with a suitable thixotropic resin, curing said resin, then inverting the capped tube and supporting the latter in upright position and filling the interior of the tube with a suitable insulating material to encapsulate the capacitor section and then curing the same.
Claim 2
Independent Claim
151 words
The method of forming a tubular mica capacitor having a substantially rectangular capacitor section with oppositely extending terminal leads and a tubular outer casing, which comprises the steps of positioning one end of the tubular casing on an associated cylindrical boss so as to rise vertically therefrom, positioning the capacitor section completely in the casing with the lower one of the terminal leads of the capacitor section in an axial opening in the boss, supporting the other terminal lead of the capacitor section extending from the upper end of the tubular casiNg so that the two terminal leads are vertically aligned, capping the upper end of the tubular casing with a suitable thixotropic resin, curing said resin, then inverting the capped tube and supporting the latter in upright position and filling the interior of the tube with a suitable insulating material to encapsulate the capacitor section and then curing the same.
Claim 3
Dependent Claim
49 words
The method set forth in claim 1 in which the terminal lead extending from the capped end of the capacitor is positioned in a vertical bore that is axially aligned with a cylindrical holder, the latter encompassing the end of the tube to retain the latter in vertical position.
References Cited (Backward Citations)
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US2047273A
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US2478754A
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US2943359A
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US3036249A
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |