Patent US3298362A successfully refreshed from Google Patents.
US3298362A
Expired / Lapsed
US
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Instrument for use in performing a controlled valsalva maneuver
Assignee: Individual
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Filing: 1963-12-10
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Granted: 1967-01-17
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Expires: 1983-12-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Maxwell W Lippitt
- 👤 Jr John H Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:38
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/087; A61B5/0875; A61B5/097; A63; A63B; A63B23/00; A63B23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN AN INSTRUMENT OF THE CHARACTER DESCRIBED, A CYLINDRICAL TUBE HAVING A BORE EXTENDING THERETHROUGH AND PROVIDED AT ONE END WITH A MOUTHPIECE WHEREBY A PERSON MAY BLOW THROUGH THE MOUTHPIECE INTO THE TUBE; A PISTON SLIDABLY MOUNTED WITHIN THE TUBE IN SUBSTANTIALLY AIRTIGHT RELATION WITH THE INNER WALL OF THE TUBE AND MOVABLE IN RESPONSE TO AIR PRESSURE COMMUNICATED TO THE TUBE THROUGH THE MOUTHPIECE; ELASTIC MEANS CONNECTING THE PISTON TO SAID TUBE FOR YIELDABLY HOLDING THE PISTON IN A PREDETERMINED POSITION WITHIN THE TUBE, SAID ELASTIC MEANS BEING ADAPTED TO EXERT A TENSION FORCE ON THE PISTON IN COUNTERACTION TO AIR PRESSURE APPLIED AGAINST THE PISTON BY A PERSON EXHALING THROUGH THE MOUTHPIECE INTO THE TUBE TO THEREBY LIMIT THE MOVEMENT OF THE PISTON IN ACCORDANCE WITH THE MAGNITUDE OF THE PRESSURE, SAID
Claim 2
Dependent Claim
135 words
IN AN INSTRUMENT OF THE CHARACTER DESCRIBED, A CYLINDRICAL TUBE HAVING A BORE EXTENDING THERETHROUGH AND PROVIDED AT ONE END WITH A MOUTHPIECE WHEREBY A PERSON MAY BLOW THROUGH THE MOUTHPIECE INTO THE TUBE; A PISTON SLIDABLY MOUNTED WITHIN THE TUBE IN SUBSTANTIALLY AIRTIGHT RELATION WITH THE INNER WALL OF THE TUBE AND MOVABLE IN RESPONSE TO AIR PRESSURE COMMUNICATED TO THE TUBE THROUGH THE MOUTHPIECE; ELASTIC MEANS CONNECTING THE PISTON TO SAID TUBE FOR YIELDABLY HOLDING THE PISTON IN A PREDETERMINED POSITION WITHIN THE TUBE, SAID ELASTIC MEANS BEING ADAPTED TO EXERT A TENSION FORCE ON THE PISTON IN COUNTERACTION TO AIR PRESSURE APPLIED AGAINST THE PISTON BY A PERSON EXHALING THROUGH THE MOUTHPIECE INTO THE TUBE TO THEREBY LIMIT THE MOVEMENT OF THE PISTON IN ACCORDANCE WITH THE MAGNITUDE OF THE PRESSURE, SAID
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |