US4744356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demand oxygen supply device
Assignee: Individual
•
Filing: 1986-03-03
•
Granted: 1988-05-17
•
Expires: 2006-03-03
Abstract
Abstract Provided herein is a demand breathing device including a motion sensitive sensor which sends signals corresponding to torso movement to a controller incorporating electronic differentiation to indicate the direction of torso movement corresponding to the expansion and retraction of inhalation and exhalation, respectively, and to energize a solenoid valve which interrupts oxygen flow during exhalation.
Inventors
- 👤 Eugene C. Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0666; A61M16/0672; A61M16/0677; A61M16/0051; A61M16/021; A61M16/022; A61M16/024; A61M16/10; A61M16/1005; A61M16/101; A61M16/0003; A61M2016/0015; A61M2016/0018; A61M2016/0024; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2202/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
11 words
In a gas flow regulator for attachment to a gas reservoir:
Claim 2
Dependent Claim
11 words
In a gas flow regulator for attachment to a gas reservoir:
Claim 3
Dependent Claim
128 words
a solenoid valve capable of movement between an open position and a closed position where gas flow is stopped, a power supply electrically connected to said solenoid valve for moving said valve between the open and closed position, a motion sensitive detection sensor for detecting the direction of motion including an oscillator which generates an electrical signal corresponding to a particular motion direction detected, a controller in signal communication with said sensor and signal communication with said valve, said controller incorporating means for interpreting a change in the frequency of said sensor signal to read out the amount and direction of movement of the torso and means for generating a responsive signal thereto where said responsive signal causes said valve to move between the open and closed position.
Claim 4
Dependent Claim
128 words
a solenoid valve capable of movement between an open position and a closed position where gas flow is stopped, a power supply electrically connected to said solenoid valve for moving said valve between the open and closed position, a motion sensitive detection sensor for detecting the direction of motion including an oscillator which generates an electrical signal corresponding to a particular motion direction detected, a controller in signal communication with said sensor and signal communication with said valve, said controller incorporating means for interpreting a change in the frequency of said sensor signal to read out the amount and direction of movement of the torso and means for generating a responsive signal thereto where said responsive signal causes said valve to move between the open and closed position.
Claim 5
Dependent Claim
23 words
A regulator according to claim 1 further including belt support means for attaching said sensor and controller to the torso of a user.
Claim 6
Dependent Claim
14 words
A device according to claim 1 wherein said power supply is a battery pack.
Claim 7
Dependent Claim
35 words
The gas flow regulator according to claim 1 where said motion sensitive detection sensor is affixed to a patient's body and where said soldenoid valve is energized only upon exhalation of air from the patient.
Claim 8
Dependent Claim
15 words
A regulator according to claim 4 where the motion sensitive detection sensor is a transducer.
References Cited (Backward Citations)
US2912979A
Cited
US3191595A
Cited
US3097639A
Cited
US3267935A
Cited
US3400712A
Cited
US3566387A
Cited
US3782368A
Cited
US3831596A
Cited
US3952739A
Cited
GB1492875A
Cited
US4155357A
Cited
US4336590A
Cited
US4414982A
Cited
US4535766A
Cited
US4567888A
Cited
US4440163A
Cited
US4459982A
Cited
US4461293A
Cited
US4546793A
Cited
US4590951A
Cited
US4538604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |