US3308811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sphygmometer
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1964-03-30
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Granted: 1967-03-14
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Frank N Gillette
- 👤 John W Gray
- 👤 Arvid W Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:41
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02; A61B7/04; A61B7/045; A61B5/00; A61B5/02; A61B5/021; A61B5/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A SPHYGMOMETER, COMPRISING: A CUFF FOR ENCIRCLING A PORTION OF THE HUMAN BODY, MEANS FOR INFLATING SAID CUFF TO OCCLUDE AN ARTERY, MEANS FOR REDUCING THE PRESSURE IN SAID CUFF SLOWLY, A MICROPHONE FOR MONITORING THE SOUNDS OF ARTERIAL FLOW PAST SAID CUFF AND GENERATING ELECTRICAL SIGNALS IN RESPONSE THERETO, FILTER MEANS RECEIVING SIGNALS GENERATED BY SAID MICROPHONE FOR NORMALLY PASSING A FIRST BAND OF FREQUENCIES IN THE RANGE OF FROM THIRTY TO ONE-HUNDRED CYCLES PER SECOND AND SELECTIVELY ACTUABLE TO PASS A SECOND BAND OF FREQUENCIES IN THE RANGE OF FROM FIFTY TO ONE-HUNDRED CYCLES PER SECOND, MEANS RESPONSIVE TO THE FIRST OCCURRENCE OF A SIGNAL PASSING THROUGH SAID FILTER MEANS AS THE PRESSURE IN SAID CUFF IS REDUCED FOR RECORDING THE PRESSURE THEN EXISTING IN SAID CUFF AND FOR ACTUATING SAID FILTER TO PASS SAID SECOND BAND OF FREQUENCIES, AND MEANS RESPONSIVE TO A SUBSEQUENT INTERRUPTION OF THE SIGNAL PASSING THROUGH SAID FILTER FOR RECORDING THE PRESSURE THEN EXISTING IN SAID CUFF.
Claim 2
Dependent Claim
164 words
A SPHYGMOMETER, COMPRISING: A CUFF FOR ENCIRCLING A PORTION OF THE HUMAN BODY, MEANS FOR INFLATING SAID CUFF TO OCCLUDE AN ARTERY, MEANS FOR REDUCING THE PRESSURE IN SAID CUFF SLOWLY, A MICROPHONE FOR MONITORING THE SOUNDS OF ARTERIAL FLOW PAST SAID CUFF AND GENERATING ELECTRICAL SIGNALS IN RESPONSE THERETO, FILTER MEANS RECEIVING SIGNALS GENERATED BY SAID MICROPHONE FOR NORMALLY PASSING A FIRST BAND OF FREQUENCIES IN THE RANGE OF FROM THIRTY TO ONE-HUNDRED CYCLES PER SECOND AND SELECTIVELY ACTUABLE TO PASS A SECOND BAND OF FREQUENCIES IN THE RANGE OF FROM FIFTY TO ONE-HUNDRED CYCLES PER SECOND, MEANS RESPONSIVE TO THE FIRST OCCURRENCE OF A SIGNAL PASSING THROUGH SAID FILTER MEANS AS THE PRESSURE IN SAID CUFF IS REDUCED FOR RECORDING THE PRESSURE THEN EXISTING IN SAID CUFF AND FOR ACTUATING SAID FILTER TO PASS SAID SECOND BAND OF FREQUENCIES, AND MEANS RESPONSIVE TO A SUBSEQUENT INTERRUPTION OF THE SIGNAL PASSING THROUGH SAID FILTER FOR RECORDING THE PRESSURE THEN EXISTING IN SAID CUFF.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |