US3237102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic range switching voltmeter circuit including means for reducing the measured signal during range switching
Assignee: MESUR MATIC ELECTRONICS CORP
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Filing: 1961-09-18
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Granted: 1966-02-22
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Harold R Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:10
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/08; G01R15/09; H; H03; H03F; H03F2200/00; H03F2200/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A SYSTEM FOR SWITCHING RANGE SCALE OF A METER COMPRISING A SOURCE OF DIRECT SIGNAL TO BE MEASURED BY SAID METER, MEANS FOR CONVERTING SAID DIRECT SIGNAL TO AN ALTERNATING SIGNAL OF PEAK MAGNITUDE EQUAL TO THE MAGNITUDE OF SAID DIRECT SIGNAL, AN ALTERNATING CURRENT AMPLIFIER HAVING STABILIZED GAIN AMPLIFYING SAID ALTERNATING SIGNAL, MEANS FOR CONVERTING THE AMPLIFIED ALTERNATING SIGNAL TO A STEADY DIRECT VOLTAGE, MENS INCLUDING A STEP SWITCH FOR CHANGING RANGE OF SAID METER, MEANS RESPONSIVE TO SAID STEADY DIRECT VOLTAGE ONLY WHEN SAID STEADY DIRECT VOLTAGE IS ABOVE A VALUE CORRESPONDING WITH FULL SCALE DEFLECTION OF SAID METER FOR ENERGIZING SAID STEP SWITCH, MEANS RESPONSIVE TO EACH ENERGIZATION OF SAID STEP SWITCH FOR TRANSIENTLY REDUCING SAID STEADY DIRECT VOLTAGE TO A NEGLIGIBLE VALUE, MEANS RESPONSIVE TO SAID STEAD VOLTAGE ONLY WHEN SAID STEP SWITCH IS IN OTHER THAN LOWEST RANGE POSITION AND TO A PREDETERMINED RELATIVELY LOW VALUE OF SAID STEADY VOLTAGE FOR ENERGIZING SAID STEP SWITCH.
Claim 2
Independent Claim
160 words
A SYSTEM FOR SWITCHING RANGE SCALE OF A METER COMPRISING A SOURCE OF DIRECT SIGNAL TO BE MEASURED BY SAID METER, MEANS FOR CONVERTING SAID DIRECT SIGNAL TO AN ALTERNATING SIGNAL OF PEAK MAGNITUDE EQUAL TO THE MAGNITUDE OF SAID DIRECT SIGNAL, AN ALTERNATING CURRENT AMPLIFIER HAVING STABILIZED GAIN AMPLIFYING SAID ALTERNATING SIGNAL, MEANS FOR CONVERTING THE AMPLIFIED ALTERNATING SIGNAL TO A STEADY DIRECT VOLTAGE, MENS INCLUDING A STEP SWITCH FOR CHANGING RANGE OF SAID METER, MEANS RESPONSIVE TO SAID STEADY DIRECT VOLTAGE ONLY WHEN SAID STEADY DIRECT VOLTAGE IS ABOVE A VALUE CORRESPONDING WITH FULL SCALE DEFLECTION OF SAID METER FOR ENERGIZING SAID STEP SWITCH, MEANS RESPONSIVE TO EACH ENERGIZATION OF SAID STEP SWITCH FOR TRANSIENTLY REDUCING SAID STEADY DIRECT VOLTAGE TO A NEGLIGIBLE VALUE, MEANS RESPONSIVE TO SAID STEAD VOLTAGE ONLY WHEN SAID STEP SWITCH IS IN OTHER THAN LOWEST RANGE POSITION AND TO A PREDETERMINED RELATIVELY LOW VALUE OF SAID STEADY VOLTAGE FOR ENERGIZING SAID STEP SWITCH.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |