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US3244966A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-unit variable transformer device

Assignee: Singer Co
•
Filing: 1962-10-04
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Granted: 1966-04-05
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Expires: 1982-10-04
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Abstract

No abstract record available.

Inventors

  • 👤 Elmer P Gertsch
  • 👤 Richard M Bloniarz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:28
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01F; H01F29/00; H01F29/02; H01H9/16; H01H9/165

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 175 words
A COMPACT, ADJUSTABLE VOLTAGE-DIVIDING DEVICE INCLUDING A GENERALLY CYLINDRICAL CASING ADAPTED FOR PANEL MOUNTING BY BODILY INSERTION THROUGH A CIRCULAR PANEL APERTURE, IMPEDANCE MEANS IN SAID CASING DEFINING A MULTIPLICITY OF IMPEDANCE SECTIONS PROVIDED WITH TERMINALS CONNECTED THERETO TO DEFINE A PLURALITY OF DECADES OF IMPEDANCE VALUE, A ROTARY SELECTING SWITCH PROVIDING DECIMAL IMPEDANCE-SELECTIVE CONTACT POSITIONS FOR EACH OF SAID SECTIONS, SAID SWITCHES BEING CLUSTERED LATERALLY ABOUT A CENTRAL LONGITUDINAL AXIS OF SAID CASING, AND EACH SWITCH INCLUDING DETENT MEANS DEFINING AT LEAST TEN INDIVIDUAL CONTACT POSITIONS CORRESPONDING TO THE RESPECTIVE DECADES OF THE SELECTED IMPEDANCE VALUE IN CIRCUIT: A STEPPED-DIAMETER PLURALITY OF CONCENTRIC OPERATING KNOBS MOUNTED ON SAID CENTRAL AXIS AT ONE END OF THE CASING AND ALL PROVIDED WITH NUMERICAL INDICIA CORRESPONDING TO THE DECADE SWITCH POSITIONS OF SAID RESPECTIVE SWITCHES, AND COAXIAL SHAFT MEANS CENTERED ON SAID CASING AXIS AND INDIVIDUALLY CONNECTING ONE EACH OF SAID SWITCHES TO A RESPECTIVE ONE OF SAID KNOBS; WHEREBY THE SETTINGS OF SAID SWITCHES CAN BE READ OFF THE KNOB INDICIA AS A CONNECTED MULTI-DIGIT NUMERAL.

References Cited (Backward Citations)

US2617978A Cited
US2672586A Cited
US2774934A Cited
US2843822A Cited
US3009993A Cited
US2982824A Cited
US3078356A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-04-04 1969-10-04 1970-04-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-04-04 1973-10-04 1974-04-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-04-04 1977-10-04 1978-04-05 $7700.00 Window Closed / Lapsed

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