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US3564569A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making voltage regulators

Assignee: ZF International UK Ltd
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Filing: 1968-01-04
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Granted: 1971-02-16
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Expires: 1988-01-04
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Abstract

Abstract A VOLTAGE REGULATOR FOR A BATTERY CHARGING SYSTEM ON A ROAD VEHICLE IS MANUFACTURED BY MOUNTING THE ACTIVE COMPONENTS OF THE REGULATOR ON A THICK FILM PRINTED CIRCUIT INCLUDING A SETTING RESISTOR EXPOSED ON ONE EDGE OF THE SUBSTRATE OF TEH PRINTED CIRCUIT. ANY REMAINING CONNECTIONS ARE THEN MADE, AND IF THE REGULASTOR IS SATISFACTORY THE RESISTOR EXPOSED ON THE EDGE OF THE SUBSTRATE IS ABRADED TO SET THE OSCILLATING VOLTAGE OF THE REGULATOR, THE REGULATOR THEN BEING MOUNTED ON A HEAT SINK AND ENCAPSULATED. AS AN ESSENTIAL FEATRE, THE REGULATOR IS TESTED BEFORE THE ABRADING OPERATION, SO THAT IF IT IS FAULTY THE THICK FILM CIRCUIT CAN BE USED AGAIN BY REMOVING THE ACTIVE COMPONENTS FROM IT.

Inventors

  • 👤 Roger William Nolan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 04:40
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/22; H02J7/225; H02J7/70; H02P; H02P9/00; H02P9/48; H02P2101/00; H02P2101/45; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-02-15 1974-08-17 1975-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-15 1978-08-17 1979-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-15 1982-08-17 1983-02-16 $7700.00 Window Closed / Lapsed

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