US3238518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mode indicator device
Assignee: Motors Liquidation Co
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Filing: 1962-08-29
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Granted: 1966-03-01
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Expires: 1982-08-29
Abstract
No abstract record available.
Inventors
- 👤 Richard P Ballou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:09
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G01K1/024; G01F; G01F23/00; G01F23/30; G01L; G01L19/00; G01L19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
DUAL MODE INDICATOR MEANS OF THE CLASS DESCRIBED INCLUDING THE CIRCUIT COMBINATION OF A SOURCE OF ENERGIZING POTENTIAL, FIRST AND SECOND GAUGE COILS CONNECTED ACROSS SAID SOURCE, CONTINUOUSLY VARIABLE POTENTIOMETER MEANS CONNECTED TO SAID FIRST COIL AND RESPONSIVE TO A FIRST CONDITION TO VARY THE CURRENT THROUGH SAID FIRST COIL, A CURRENT RESPONSIVE WARNING MEANS CONNECTED IN SERIES WITH SAID SECOND GUAGE COIL, SAID CURRENT RESPONSIVE WARNING MEANS PROVIDING A VARIABLE WARNING INDICATION IN RESPONSE TO THE APPLIED CURRENT WHEREBY SAID WARNING MEANS IS RESPONSIVE TO A FIRST PREDETERMINED AMOUNT OF CURRENT TRAVERSING THE WARNING MEANS AND THE SECOND GAUGE COIL, AUXILIARY CIRCUIT MEANS CONNECTED IN SHUNT
Claim 2
Dependent Claim
107 words
DUAL MODE INDICATOR MEANS OF THE CLASS DESCRIBED INCLUDING THE CIRCUIT COMBINATION OF A SOURCE OF ENERGIZING POTENTIAL, FIRST AND SECOND GAUGE COILS CONNECTED ACROSS SAID SOURCE, CONTINUOUSLY VARIABLE POTENTIOMETER MEANS CONNECTED TO SAID FIRST COIL AND RESPONSIVE TO A FIRST CONDITION TO VARY THE CURRENT THROUGH SAID FIRST COIL, A CURRENT RESPONSIVE WARNING MEANS CONNECTED IN SERIES WITH SAID SECOND GUAGE COIL, SAID CURRENT RESPONSIVE WARNING MEANS PROVIDING A VARIABLE WARNING INDICATION IN RESPONSE TO THE APPLIED CURRENT WHEREBY SAID WARNING MEANS IS RESPONSIVE TO A FIRST PREDETERMINED AMOUNT OF CURRENT TRAVERSING THE WARNING MEANS AND THE SECOND GAUGE COIL, AUXILIARY CIRCUIT MEANS CONNECTED IN SHUNT
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |