Patent US3164149A successfully refreshed from Google Patents.
US3164149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling or assisting respiration
Assignee: BOC Group Ltd
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Filing: 1961-02-03
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Granted: 1965-01-05
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Expires: 1981-02-03
Abstract
No abstract record available.
Inventors
- 👤 White Gerald Alfred
- 👤 Baxter Ian George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0057; A61M16/0075; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7754; Y10T137/7755
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN AUTOMATIC VENTILATOR COMPRISING A SOURCE OF FLUID UNDER PRESSURE, MEANS DEFINING A PRIMARY CHAMBER, AN INLET FOR CONDUCTING FLUID UNDER PRESSURE FROM SAID SOURCE INTO SAID PRIMARY CHAMBER, AN OUTLET FOR CONDUCTING FLUID UNDER PRESSURE OUT OF SAID PRIMARY CHAMBER MAGNETICALLY RESPONSIVE PRIMARY VALVE MEANS MOVABLE BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL THE DISCHARGE OF FLUID UNDER PRESSURE FROM SAID PRIMARY CHAMBER THROUGH SAID OUTLET IN ACCORDANCE WITH VARIATIONS IN A PRESSURE CONDITION, A PRESSURE RESPONSIVE MEMBER MAGNETICALLY COUPLED TO SAID PRIMARY VALVE MEANS MOVABLE IN REPSONSES TO A PREDETERMINED INCREASES IN SAID PRESSURE CONDITION TO MAGNETICALLY ACTUATE SAID PRIMARY VALVE MEANS FROM SAID OPEN TO SAID CLOSED POSITION, SAID PRESSURE RESPONSIVE MEANS AUTOMATICALLY MOVABLE UPON A PREDETERMINED DECREASE IN PRESSURE TO MAGNETICALLY ACTUATE SAID PRIMARY VALVE MEANS BACK TO SAID OPEN POSITION TO DISCHARGE FLUID UNDER PRES-
Claim 2
Dependent Claim
140 words
AN AUTOMATIC VENTILATOR COMPRISING A SOURCE OF FLUID UNDER PRESSURE, MEANS DEFINING A PRIMARY CHAMBER, AN INLET FOR CONDUCTING FLUID UNDER PRESSURE FROM SAID SOURCE INTO SAID PRIMARY CHAMBER, AN OUTLET FOR CONDUCTING FLUID UNDER PRESSURE OUT OF SAID PRIMARY CHAMBER MAGNETICALLY RESPONSIVE PRIMARY VALVE MEANS MOVABLE BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL THE DISCHARGE OF FLUID UNDER PRESSURE FROM SAID PRIMARY CHAMBER THROUGH SAID OUTLET IN ACCORDANCE WITH VARIATIONS IN A PRESSURE CONDITION, A PRESSURE RESPONSIVE MEMBER MAGNETICALLY COUPLED TO SAID PRIMARY VALVE MEANS MOVABLE IN REPSONSES TO A PREDETERMINED INCREASES IN SAID PRESSURE CONDITION TO MAGNETICALLY ACTUATE SAID PRIMARY VALVE MEANS FROM SAID OPEN TO SAID CLOSED POSITION, SAID PRESSURE RESPONSIVE MEANS AUTOMATICALLY MOVABLE UPON A PREDETERMINED DECREASE IN PRESSURE TO MAGNETICALLY ACTUATE SAID PRIMARY VALVE MEANS BACK TO SAID OPEN POSITION TO DISCHARGE FLUID UNDER PRES-
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) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |