US3840006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator
Assignee: DEPARTMENT OF HEALTH EDUCATION
•
Filing: 1973-04-26
•
Granted: 1974-10-08
•
Expires: 1993-04-26
Abstract
Abstract A portable, power driven respirator controls measured amounts of air (and, if desired, admix gas, such as oxygen) to a patient during inhalation events and from the patient during exhalation events. The events are controlled pneumatically and electrically as to time and rate of occurrence, duration and relationship. Quantities, pressures and times are precisely regulated and monitored automatically with some patient override, provision for deep breaths, some manual control and with indicators and alarms.
Inventors
- 👤 K Buck
- 👤 S Kitrilakis
- 👤 T Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:02
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0051; A61M16/021; A61M16/022; A61M16/0057; A61M16/0063; A61M16/10; A61M16/105; A61M16/1055; A61M16/106; A61M16/107
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
95 words
A respirator comprising a displacement chamber having a wall movable toward and way from a predetermined location, means urging said wall toward said location, a patient''s airway in communication with said chamber, means for supplying said chamber with gas at a pressure to urge said wall away from said location, means for detecting the position of said wall relative to said location and for producing a signal proportional thereto, means for controlling flow of gas from said supplying means to said chamber, and means responsive to said detecting means signal for actuating said controlling means.
Claim 2
Dependent Claim
95 words
A respirator comprising a displacement chamber having a wall movable toward and way from a predetermined location, means urging said wall toward said location, a patient''s airway in communication with said chamber, means for supplying said chamber with gas at a pressure to urge said wall away from said location, means for detecting the position of said wall relative to said location and for producing a signal proportional thereto, means for controlling flow of gas from said supplying means to said chamber, and means responsive to said detecting means signal for actuating said controlling means.
Claim 3
Dependent Claim
50 words
A respirator as in claim 1 including means for supplying said chamber with another gas at a pressure to press said wall away from said location, second means for controlling said other gas supplying means, and further means responsive to said detecting means signal for actuating said second controlling means.
Claim 4
Dependent Claim
32 words
A respirator as in claim 1 in which said detecting means includes an electromechanical device affording an electrical signal in accordance with the instantaneous position of said wall relative to said location.
Claim 5
Dependent Claim
16 words
A respirator as in claim 1 in which said controlling means is an electrically actuated valve.
Claim 6
Dependent Claim
25 words
A respirator as in claim 1 including a first means for setting a response value at which said detecting means signal actuates said controlling means.
Claim 7
Dependent Claim
25 words
A respirator as in claim 5 including a second means for setting another response value at which said detecting means signal actuates said controlling means.
Claim 8
Dependent Claim
27 words
A respirator as in claim 6 including means for shifting between said first means and said second means, and timing means for periodically actuating said shifting means.
Claim 9
Dependent Claim
24 words
A respirator as in claim 1 including means responsive to said detecting means for delaying the actuation of said controlling means in response thereto.
Claim 10
Dependent Claim
46 words
A respirator as in claim 1 including conduit means connecting said chamber to said airway, means in said conduit for opening said airway to and closing said airway from the atmosphere, and means controlled by said detecting means signal for controlling said opening and closing means.
Claim 11
Dependent Claim
29 words
A respirator as in claim 9 including a valve in said conduit means, a first timing device, and means controlled by said first timing device for operating said valve.
Claim 12
Dependent Claim
23 words
A respirator as in claim 9 including a second timing device, and means controlled by said second timing device for operating said valve.
Claim 13
Dependent Claim
19 words
A respirator as in claim 11 including means for synchronizing said first timing device and said second timing device
Claim 14
Dependent Claim
19 words
A respirator as in claim 9 including means for regulating the rate of gas flow in said conduit means.
Claim 15
Dependent Claim
19 words
A respirator as in claim 9 including means for regulating the pressure of gas flowing in said connecting means.
Claim 16
Dependent Claim
31 words
A respirator as in claim 9 including means responsive to air pressure in said airway, and means controlled by said responsive means for setting the maximum value of said air pressure.
References Cited (Backward Citations)
US3191595A
Cited
US3307542A
Cited
US3266488A
Cited
US3414896A
Cited
US3523527A
Cited
US3504670A
Cited
US3730180A
Cited
US3729000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |