US3755762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of building for electric filters
Assignee: Societe Anonyme de Telecommunications SAT
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Filing: 1972-05-22
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Granted: 1973-08-28
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Expires: 1992-05-22
Abstract
Abstract A low cost and reduced bulk electric filter construction, in particular for telecommunication equipment, in the form of an assembly of inductances and capacitors, in which all the inductances of the filter use as magnetic cores a common ferrite block consisting of two contiguous parts. The capacitors are preferably grouped in a single insulating wafer placed in contact with the outside surface of one of the said contiguous parts.
Inventors
- 👤 J Boulin
- 👤 A Nepomiastchy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/175; H01; H01F; H01F17/00; H01F17/04; H01F17/043; H03H3/00; H03H7/075; H03H7/1775
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
An electric filter construction for telecommunication equipment consisting of an assembly of capacitors and of a plurality of inductances each having a magnetic ferrite core, in which all the cores of said inductances are included in a common magnetic ferrite block having two contiguous parts each having at least one plane surface, at least one of said contiguous parts including recesses in number equal to that of said inductances and each having a size and a shape adapted to receive a winding for one of said inductances, while the other one of said contiguous parts is provided with apertures for connecting tags connected to said inductances, and in which said contiguous parts are assembled by placing them in contact along two of said plane surfaces respectively belonging to one and the other of said parts.
Claim 2
Dependent Claim
21 words
An electric filter construction according to claim 2, in which said contiguous parts are respectively a main part and a cover.
Claim 3
Dependent Claim
26 words
An electric filter construction according to claim 2, in which said contiguous parts are substantially identical and form two halves symmetrically assembled along said plane surfaces.
Claim 4
Dependent Claim
50 words
An electric filter construction according to claim 2, in which said capacitors are grouped on a single insulating wafer, in which said wafer is placed in contact with a plane outer surface belonging to one of said contiguous parts, and in which said connecting tags are connected to said capacitors.
Claim 5
Dependent Claim
26 words
An electric filter construction according to claim 2, in which each of said recesses has the shape of a hole comprised between two coaxial cylindrical surfaces.
Claim 6
Dependent Claim
35 words
An electric filter construction according to claim 6, in which each of said recesses further comprises a side part located in the vicinity of said plane surface for the passing through of said connecting tags.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |