US4124876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mica capacitor
Assignee: Societe Anonyme de Telecommunications SAT
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Filing: 1977-10-18
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Granted: 1978-11-07
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Expires: 1997-10-18
Abstract
Abstract A mica capacitor is made of two elementary modular mica capacitors which can be of different values. The leads of the capacitor are placed between the two modular mica capacitors.
Inventors
- 👤 Xavier R. Labadie
- 👤 Andre J. Velte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:09
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/242; H01G4/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
127 words
A capacitor comprising two electrical terminal leads and two elementary capacitors, each capacitor having a rectangular body block of stacked mica sheets including two electrode coatings of electrical conductive material covering at least two substantially parallel opposite edges of said block, said block of one elementary capacitor being connected in parallel to said block of other elementary capacitor by means of the end portions of said electrical terminal leads, said end portions being flattened and sandwiched between two main opposed faces of said blocks, projecting outward slightly beyond said substantially parallel edges of said blocks, and each being bounded in parallel to said edges of said blocks by soldering to said electrode coatings, whereby an intermediate space separates said main opposed faces of said elementary capacitor blocks.
Claim 2
Dependent Claim
127 words
A capacitor comprising two electrical terminal leads and two elementary capacitors, each capacitor having a rectangular body block of stacked mica sheets including two electrode coatings of electrical conductive material covering at least two substantially parallel opposite edges of said block, said block of one elementary capacitor being connected in parallel to said block of other elementary capacitor by means of the end portions of said electrical terminal leads, said end portions being flattened and sandwiched between two main opposed faces of said blocks, projecting outward slightly beyond said substantially parallel edges of said blocks, and each being bounded in parallel to said edges of said blocks by soldering to said electrode coatings, whereby an intermediate space separates said main opposed faces of said elementary capacitor blocks.
Claim 3
Dependent Claim
71 words
A capacitor as claimed in claim 1, wherein the capacitve values C 1 and C 2 of said elementary capacitors are selected and matched within narrow capacitance ranges such as: C.sub.1 = C/2 + x ± Δ x and C.sub.2 = C/2 - x ± Δ x where C is the capacitive value of said capacitor, x is any capacitor value and Δ x represents a very small variation of x.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |