Patent US3229686A successfully refreshed from Google Patents.
US3229686A
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Blood pressure and heart beat pulse rate measuring system
Assignee: Physio Control Inc
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Filing: 1963-07-05
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Granted: 1966-01-18
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Karl W Edmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:00
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A BLOOD PRESSURE AND HEARTBEAT MEASURING APPARATUS, A PNEUMATIC COMPRESSOR CONTAINING FLUID UNDER PRESSURE AND HAVING AN EXTREMITY-RECEIVING CAVITY PROVIDED WITH A PAIR OF ELECTRODES ENGAGEABLE WITH SPACED SURFACE PORTIONS OF AN EXTREMITY RECEIVED IN SAID CAVITY, PRESSURE-INDICATING MEANS CONNECTED TO SAID COMPRESSOR, ELECTRICAL IMPEDANCE-RESPONSIVE MEANS CONNECTED TO SAID ELECTRODES, PRESSURE-MODULATING MEANS CONNECTED TO SAID COMPRESSOR AND CHANGING THE COMPRESSOR FLUID PRESSURE IN ONE DIRECTION WHEN ENERGIZED AND IN THE OPPOSITE DIRECTION WHEN DEENERGIZED, AND MEANS TO ENERGIZE SAID PRESSURE-MODULATING MEANS RESPONSIVE TO A PREDETERMINED CHANGE IN IMPEDANCE ACROSS SAID ELECTRODES.
Claim 2
Dependent Claim
92 words
IN A BLOOD PRESSURE AND HEARTBEAT MEASURING APPARATUS, A PNEUMATIC COMPRESSOR CONTAINING FLUID UNDER PRESSURE AND HAVING AN EXTREMITY-RECEIVING CAVITY PROVIDED WITH A PAIR OF ELECTRODES ENGAGEABLE WITH SPACED SURFACE PORTIONS OF AN EXTREMITY RECEIVED IN SAID CAVITY, PRESSURE-INDICATING MEANS CONNECTED TO SAID COMPRESSOR, ELECTRICAL IMPEDANCE-RESPONSIVE MEANS CONNECTED TO SAID ELECTRODES, PRESSURE-MODULATING MEANS CONNECTED TO SAID COMPRESSOR AND CHANGING THE COMPRESSOR FLUID PRESSURE IN ONE DIRECTION WHEN ENERGIZED AND IN THE OPPOSITE DIRECTION WHEN DEENERGIZED, AND MEANS TO ENERGIZE SAID PRESSURE-MODULATING MEANS RESPONSIVE TO A PREDETERMINED CHANGE IN IMPEDANCE ACROSS SAID ELECTRODES.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |