Patent US3876926A successfully refreshed from Google Patents.
US3876926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thick-film voltage regulator for three-phase alternators
Assignee: Siemens AG
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Filing: 1973-11-19
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Granted: 1975-04-08
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Expires: 1993-11-19
Abstract
Abstract A thick-film voltage regulator for the electrical system of an automobile or the like incorporates a housing formed of heatconductive material with cooling ribs, and an encapsulated portion through which conductors pass for interconnection with other components of the electrical system. The regulator control circuit is a thick-film hybrid circuit formed on an insulating substrate and having burned-in conductor paths and resistors with discrete capacitors and semiconductors being connected thereto. A zener diode is incorporated for overvoltage protection on a separate metallic substrate mounted adjacent to the insulating substrate, and both substrates are supported on the housing in good heat-conducting relationship therewith.
Inventors
- 👤 Werner Schott
- 👤 Dieter Pilz
- 👤 Reiner Weidlich
- 👤 Peter Fickenscher
- 👤 Elmar Schmid
- 👤 Herbert Reinl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:22
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/70; H02J2105/00; H02J2105/30; H02J2105/33
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
217 words
A voltage regulator for the electrical system of a motor vehicle, adapted to control the voltage level developed by an alternator so as to conform to a desired value, said regulator comprising a housing formed of a heat-conducting material, said housing being open on one side, a lid for closing said open side, said lid being formed of a heat-insulating material, said housing having a peripheral groove, and said lid having a corresponding peripheral projection, said projection being received in said groove when said lid is in position on said housing, a wall for dividing the interior of said housing into interior and exterior chambers, said wall carrying a plurality of solder lugs, an insulating substrate plate incorporating burned-in conductor pads and resistors and supporting discrete capacitors and semiconductor chips thereon, a metallic substrate plate for supporting a semiconductor diode for overvoltage protection of the regulator, said metallic and said insulating substrate plates being inserted in corresponding recesses in said interior chamber of said housing and connected to said housing by means of a heatconductive cement, means connecting said solder lugs on the interior side of said wall to said substrate plates, said solder lugs being adapted for connection on the exterior side of said wall to said alternator, and a synthetic resin filling said exterior chamber.
Claim 2
Dependent Claim
217 words
A voltage regulator for the electrical system of a motor vehicle, adapted to control the voltage level developed by an alternator so as to conform to a desired value, said regulator comprising a housing formed of a heat-conducting material, said housing being open on one side, a lid for closing said open side, said lid being formed of a heat-insulating material, said housing having a peripheral groove, and said lid having a corresponding peripheral projection, said projection being received in said groove when said lid is in position on said housing, a wall for dividing the interior of said housing into interior and exterior chambers, said wall carrying a plurality of solder lugs, an insulating substrate plate incorporating burned-in conductor pads and resistors and supporting discrete capacitors and semiconductor chips thereon, a metallic substrate plate for supporting a semiconductor diode for overvoltage protection of the regulator, said metallic and said insulating substrate plates being inserted in corresponding recesses in said interior chamber of said housing and connected to said housing by means of a heatconductive cement, means connecting said solder lugs on the interior side of said wall to said substrate plates, said solder lugs being adapted for connection on the exterior side of said wall to said alternator, and a synthetic resin filling said exterior chamber.
Claim 3
Dependent Claim
31 words
The regulator according to claim 1 wherein said wall is supported in a groove defined between two abutments formed on the interior surface of said housing and of said lid respectively.
Claim 4
Dependent Claim
14 words
The regulator according to claim 1, wherein said lid is formed of heat-insulating plastic.
Claim 5
Dependent Claim
17 words
The regulator according to claim 1, wherein said housing is formed of aluminum or an aluminum alloy.
References Cited (Backward Citations)
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US3539907A
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US3532962A
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |