Patent US3257616A successfully refreshed from Google Patents.
US3257616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded-scale r.m.s. electrical measuring device
Assignee: Weston Instruments Inc
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Filing: 1961-09-11
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Granted: 1966-06-21
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Roman I Andrushkiw
- 👤 Jr John Nagy
- 👤 Richard P Schake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:18
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
EXPANDED-SCALE MEASURING APPARATUS FOR DETERMINING THE VALUE OF AN ALTERNATING ELECTRICAL SIGNAL COMPRISING: CIRCUIT MEANS FOR SUPPLYING THE ALTERNATING SIGNAL TO BE MEASURED; RECTIFIER CIRCUIT MEANS FOR CONVERTING THE ALTERNATING SIGNAL TO A DIRECT CURRENT; A DIRECT-CURRENT METER COUPLED IN SERIES WITH THE RECTIFIER CIRCUIT MEANS WITH A POLARITY SUCH THAT THE RECTIFIER DIRECT CURRENT WILL FLOW THROUGH THE METER IN A POSITIVE DIRECTION; CIRCUIT MEANS FOR SUPPLYING A SUBSTANTIALLY CONSTANT DIRECT CURRENT WILL FLOW THROUGH THE METER IN A CIRCUIT MEANS SHUNTING THE CONSTANT POTENTIAL SUPPLY CIRCUIT MEANS ACROSS THE METER FOR PRODUCING A SUBSTANTIALLY CONSTANT DIRECT CURRENT FLOW THROUGH THE METER IN A NEGATIVE DIRECTION THEREBY TO BALANCE OUT A PREDETERMINED PORTION OF THE RECTIFIER DIRECT CURRENT; A DIODE FUNCTION FORMER NETWORK COUPLED IN SERIES WITH THE RECTIFIER CIRCUIT MEANS AND THE METER FOR CAUSING THE MAGNITUDE OF THE RECTIFIER DIRECT CURRENT TO VARY AS A FUNCTION OF THE SQUARE OF THE MAGNITUDE OF THE ALTERNATING SIGNAL; AND CIRCUIT MEANS COUPLED TO THE CONSTANT POTENTIAL SUPPLY CIRCUIT MEANS FOR SUPPLYING DIODE BIASING VOLTAGE TO THE FUNCTION FORMER NETWORK.
Claim 2
Dependent Claim
180 words
EXPANDED-SCALE MEASURING APPARATUS FOR DETERMINING THE VALUE OF AN ALTERNATING ELECTRICAL SIGNAL COMPRISING: CIRCUIT MEANS FOR SUPPLYING THE ALTERNATING SIGNAL TO BE MEASURED; RECTIFIER CIRCUIT MEANS FOR CONVERTING THE ALTERNATING SIGNAL TO A DIRECT CURRENT; A DIRECT-CURRENT METER COUPLED IN SERIES WITH THE RECTIFIER CIRCUIT MEANS WITH A POLARITY SUCH THAT THE RECTIFIER DIRECT CURRENT WILL FLOW THROUGH THE METER IN A POSITIVE DIRECTION; CIRCUIT MEANS FOR SUPPLYING A SUBSTANTIALLY CONSTANT DIRECT CURRENT WILL FLOW THROUGH THE METER IN A CIRCUIT MEANS SHUNTING THE CONSTANT POTENTIAL SUPPLY CIRCUIT MEANS ACROSS THE METER FOR PRODUCING A SUBSTANTIALLY CONSTANT DIRECT CURRENT FLOW THROUGH THE METER IN A NEGATIVE DIRECTION THEREBY TO BALANCE OUT A PREDETERMINED PORTION OF THE RECTIFIER DIRECT CURRENT; A DIODE FUNCTION FORMER NETWORK COUPLED IN SERIES WITH THE RECTIFIER CIRCUIT MEANS AND THE METER FOR CAUSING THE MAGNITUDE OF THE RECTIFIER DIRECT CURRENT TO VARY AS A FUNCTION OF THE SQUARE OF THE MAGNITUDE OF THE ALTERNATING SIGNAL; AND CIRCUIT MEANS COUPLED TO THE CONSTANT POTENTIAL SUPPLY CIRCUIT MEANS FOR SUPPLYING DIODE BIASING VOLTAGE TO THE FUNCTION FORMER NETWORK.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |