US3196689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breath constituent measurement apparatus and method
Assignee: MACQUORN R FORRESTER
•
Filing: 1963-04-18
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Granted: 1965-07-27
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Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Macquorn R Forrester
- 👤 Glenn C Forrester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/497; G01N33/4972; A; A61; A61B; A61B5/00; A61B5/08; A61B5/083; G01N1/00; G01N1/02; G01N1/22; Y; Y10; Y10S; Y10S55/00; Y10S55/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A HUMAN BREATH-CONSTITUENT MEASURING DEVICE COMPRISING A CYLINDER, FIRST AND SECOND PISTONS RELATIVELY MOVABLE WITHIN SAID CYLINDER, MEANS INITIALLY OPERATIVE TO DIRECT BREATH INTO A SPACE BETWEEN SAID PISTONS TO MOVE SAID FIRST PISTON AWAY FROM SAID SECOND PISTON, MEANS LIMITING SAID SEPARATING MOVEMENT TO DEFINE AT THE LIMIT A KNOWN PREDETERMINED VOLUME OF BREATH BETWEEN SAID PISTONS, MEANS, OPERATIVE IN RESPONSE TO THE REACHING OF SAID LIMIT TO DIRECT BREATH TO THE FAR SIDE OF THE SECOND PISTON, AWAY FROM SAID FIRST PISTON, WHEREBY SAID BREATH IS CAUSED TO MOVE SAID SECOND PISTON TOWARD SAID FIRST PISTON, AND MEANS LIMITING THE MOVEMENT OF SAID SECOND PISTON TO A POSITION AT WHICH THE VOLUME OF BREATH ON SAID FAR SIDE OF SAID SECOND PISTON HAS REACHED AN ACCURATELY PREDETERMINED DESIRED AMOUNT WHEREBY TWO SAMPLES OF BREATH OF ACCURATELY KNOWN VOLUME ARE MADE AVAILABLE.
Claim 2
Dependent Claim
143 words
A HUMAN BREATH-CONSTITUENT MEASURING DEVICE COMPRISING A CYLINDER, FIRST AND SECOND PISTONS RELATIVELY MOVABLE WITHIN SAID CYLINDER, MEANS INITIALLY OPERATIVE TO DIRECT BREATH INTO A SPACE BETWEEN SAID PISTONS TO MOVE SAID FIRST PISTON AWAY FROM SAID SECOND PISTON, MEANS LIMITING SAID SEPARATING MOVEMENT TO DEFINE AT THE LIMIT A KNOWN PREDETERMINED VOLUME OF BREATH BETWEEN SAID PISTONS, MEANS, OPERATIVE IN RESPONSE TO THE REACHING OF SAID LIMIT TO DIRECT BREATH TO THE FAR SIDE OF THE SECOND PISTON, AWAY FROM SAID FIRST PISTON, WHEREBY SAID BREATH IS CAUSED TO MOVE SAID SECOND PISTON TOWARD SAID FIRST PISTON, AND MEANS LIMITING THE MOVEMENT OF SAID SECOND PISTON TO A POSITION AT WHICH THE VOLUME OF BREATH ON SAID FAR SIDE OF SAID SECOND PISTON HAS REACHED AN ACCURATELY PREDETERMINED DESIRED AMOUNT WHEREBY TWO SAMPLES OF BREATH OF ACCURATELY KNOWN VOLUME ARE MADE AVAILABLE.
References Cited (Backward Citations)
US2591691A
Cited
US2867511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |