US3300622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical sensing device
Assignee: Arthur D Little Inc
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Filing: 1964-06-19
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Granted: 1967-01-24
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Swain Charles Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:33
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906; G05D23/1913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTRICAL SENSING DEVICE CAPABLE OF EVALUATING A PHYSICAL PROPERTY OF A SYSTEM COMPARED WITH A REFERENCE STANDARD, COMPRISING IN COMBINATION (A) A REFERENCE CIRCUIT COMPRISING (1) A REFERENCE CAPACITOR, (2) A REFERENCE RESISTOR IN SERIES WITH SAID REFERENCE CAPACITOR WHEREBY PULSES VOLTAGE SUPPLIED TO SAID REFERENCE CIRCUIT DEVELOPS THEREIN A STANDARD REFERENCE PULSED PATTERN, AND (3) A REFERENCE SWITCH RESPONSIVE TO A PREDETERMINED VOLTAGE LEVEL IN SAID REFERENCE CIRCUIT; (B) A SENSING CIRCUIT ASSOCIATED WITH SAID SYSTEM COMPRISING (1) A SENSING CAPACITOR, (2) A SENSING RESISTOR IN SERIES WITH SAID SENSING CAPACITOR THE COMBINATION OF WHICH IS RESPONSIVE TO SAID PROPERTY WHEREBY PULSED VOLTAGE SUPPLIED TO SAID SENSING CIRCUIT DEVELOPS THEREIN A PULSED PATTERN DETERMINED BY SAID PHYSICAL PROPERTY,
Claim 2
Dependent Claim
120 words
AN ELECTRICAL SENSING DEVICE CAPABLE OF EVALUATING A PHYSICAL PROPERTY OF A SYSTEM COMPARED WITH A REFERENCE STANDARD, COMPRISING IN COMBINATION (A) A REFERENCE CIRCUIT COMPRISING (1) A REFERENCE CAPACITOR, (2) A REFERENCE RESISTOR IN SERIES WITH SAID REFERENCE CAPACITOR WHEREBY PULSES VOLTAGE SUPPLIED TO SAID REFERENCE CIRCUIT DEVELOPS THEREIN A STANDARD REFERENCE PULSED PATTERN, AND (3) A REFERENCE SWITCH RESPONSIVE TO A PREDETERMINED VOLTAGE LEVEL IN SAID REFERENCE CIRCUIT; (B) A SENSING CIRCUIT ASSOCIATED WITH SAID SYSTEM COMPRISING (1) A SENSING CAPACITOR, (2) A SENSING RESISTOR IN SERIES WITH SAID SENSING CAPACITOR THE COMBINATION OF WHICH IS RESPONSIVE TO SAID PROPERTY WHEREBY PULSED VOLTAGE SUPPLIED TO SAID SENSING CIRCUIT DEVELOPS THEREIN A PULSED PATTERN DETERMINED BY SAID PHYSICAL PROPERTY,
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |