US3277458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition and condition duration indicator
Assignee: Individual
•
Filing: 1963-06-26
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Granted: 1966-10-04
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Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:36
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06; G01; G01K; G01K7/00; G01K7/02; G01K7/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A COMBINED CONDITION AND CONDITION DURATION INDICATOR COMPRISING: (A) INPUT MEANS RESPONSIVE TO AN ELECTRIAL INPUT FOR DERIVING A FIRST OUTPUT VOLTAGE PROPORTIONAL TO A CONDITION OF SAID ELECTRICAL INPUT; (B) REFERENCE MEANS FOR DEVELOPING A SECOND AND PREDETERMINED ELECTRICAL OUTPUT; (C) DIFFERENTIAL MEANS RESPONSIVE TO SAID FIRST AND SECOND ELECTRICAL OUTPUTS FOR PROVIDING AN ELECTRICAL OUTPUT REPRESENTATIVE OF THE DIFFERENCE BETWEEN SAID FIRST AND SECOND OUTPUTS; (D) TRIGGER MEANS RESPONSIVE TO AN OUTPUT OF SAID DIFFERENTIAL MEANS FOR PROVIDING AN ABRUPT OUTPUT IN RESPONSE TO AN UNBALANCE OF PREDETERMINED DIRECTION OF SAID FIRST AND SECOND OUTPUTS; (E) SWITCHING MEANS RESPONSIVE TO AN OUTPUT OF SAID TRIGGER MEANS FOR PROVIDING A FIRST AND SECOND ELECTRICAL SWITCHING OUTPUTS; (F) FIRST INDICATING MEANS RESPONSIVE TO SAID FIRST SWITCHING OUTPUT FOR REGISTERING THE OCCURRENCE OF UNBALANCE BETWEEN SAID FIRST AND SECOND OUTPUTS; (G) TIMING MEANS RESPONSIVE TO SAID SECOND SWITCHING OUTPUT FOR GENERATING A VOLTAGE PROPORTIONAL TO TIME; (H) SECOND INDICATING MEANS RESPONSIVE TO THE OUTPUT OF SAID TIMING MEANS FOR REGISTERING WHEN THE OUTPUT OF SAID TIMING MEANS REACHES A PREDETERMINED VALUE.
Claim 2
Dependent Claim
180 words
A COMBINED CONDITION AND CONDITION DURATION INDICATOR COMPRISING: (A) INPUT MEANS RESPONSIVE TO AN ELECTRIAL INPUT FOR DERIVING A FIRST OUTPUT VOLTAGE PROPORTIONAL TO A CONDITION OF SAID ELECTRICAL INPUT; (B) REFERENCE MEANS FOR DEVELOPING A SECOND AND PREDETERMINED ELECTRICAL OUTPUT; (C) DIFFERENTIAL MEANS RESPONSIVE TO SAID FIRST AND SECOND ELECTRICAL OUTPUTS FOR PROVIDING AN ELECTRICAL OUTPUT REPRESENTATIVE OF THE DIFFERENCE BETWEEN SAID FIRST AND SECOND OUTPUTS; (D) TRIGGER MEANS RESPONSIVE TO AN OUTPUT OF SAID DIFFERENTIAL MEANS FOR PROVIDING AN ABRUPT OUTPUT IN RESPONSE TO AN UNBALANCE OF PREDETERMINED DIRECTION OF SAID FIRST AND SECOND OUTPUTS; (E) SWITCHING MEANS RESPONSIVE TO AN OUTPUT OF SAID TRIGGER MEANS FOR PROVIDING A FIRST AND SECOND ELECTRICAL SWITCHING OUTPUTS; (F) FIRST INDICATING MEANS RESPONSIVE TO SAID FIRST SWITCHING OUTPUT FOR REGISTERING THE OCCURRENCE OF UNBALANCE BETWEEN SAID FIRST AND SECOND OUTPUTS; (G) TIMING MEANS RESPONSIVE TO SAID SECOND SWITCHING OUTPUT FOR GENERATING A VOLTAGE PROPORTIONAL TO TIME; (H) SECOND INDICATING MEANS RESPONSIVE TO THE OUTPUT OF SAID TIMING MEANS FOR REGISTERING WHEN THE OUTPUT OF SAID TIMING MEANS REACHES A PREDETERMINED VALUE.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |