Patent US3947833A successfully refreshed from Google Patents.
US3316902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring system for respiratory devices
Assignee: Tri Tech Inc
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Filing: 1963-03-25
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Granted: 1967-05-02
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Henry T Winchel
- 👤 Arthur W Haydon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0051; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/113; A61M16/021; A61M16/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A RESPIRATION MONITOR OF THE CLASS DESCRIBED FOR MONITORING THE RESPIRATION IN A RESPIRATORY TRACT OF A PERSON, INCLUDING: PICK-UP MEANS CONSTRUCTED TO BE DISPOSED IN RESPIRATORY TRACT OF THE PERSON WHOSE RESPIRATION IS TO BE MONITORED FOR PROVIDING A FIRST SIGNAL INDICATING THE INSPIRATION OF AIR THROUGH THE RESPIRATORY TRACT OF SAID PERSON, FIRST MEANS OPERATIVELY INTERCONNECTED WITH SAID PICK-UP MEANS AND RESPONSIVE TO SAID FIRST SIGNAL TO PROVIDE A SECOND SIGNAL HAVING CHARACTERISTICS DEPENDENT UPON THE FREQUENCY OF SAID FIRST SIGNAL, AND MEANS OPERATIVELY INTERCONNECTED WITH SAID FIRST MEANS AND RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO SUPPLEMENT THE NATURAL INSPIRATION OF AIR THROUGH SAID TRACT BY SAID PERSON IN RESPONSE TO SAID FIRST SIGNAL WHENEVER THE SECON SIGNAL HAS CHARACTERISTICS REPRESENTING A FREQUENCY BELOW A PARTICULAR VALUE FOR THE FIRST SIGNAL.
Claim 2
Dependent Claim
136 words
IN A RESPIRATION MONITOR OF THE CLASS DESCRIBED FOR MONITORING THE RESPIRATION IN A RESPIRATORY TRACT OF A PERSON, INCLUDING: PICK-UP MEANS CONSTRUCTED TO BE DISPOSED IN RESPIRATORY TRACT OF THE PERSON WHOSE RESPIRATION IS TO BE MONITORED FOR PROVIDING A FIRST SIGNAL INDICATING THE INSPIRATION OF AIR THROUGH THE RESPIRATORY TRACT OF SAID PERSON, FIRST MEANS OPERATIVELY INTERCONNECTED WITH SAID PICK-UP MEANS AND RESPONSIVE TO SAID FIRST SIGNAL TO PROVIDE A SECOND SIGNAL HAVING CHARACTERISTICS DEPENDENT UPON THE FREQUENCY OF SAID FIRST SIGNAL, AND MEANS OPERATIVELY INTERCONNECTED WITH SAID FIRST MEANS AND RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO SUPPLEMENT THE NATURAL INSPIRATION OF AIR THROUGH SAID TRACT BY SAID PERSON IN RESPONSE TO SAID FIRST SIGNAL WHENEVER THE SECON SIGNAL HAS CHARACTERISTICS REPRESENTING A FREQUENCY BELOW A PARTICULAR VALUE FOR THE FIRST SIGNAL.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |