US3603307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for producing breathing action on the lungs
Assignee: Individual
•
Filing: 1969-03-25
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Granted: 1971-09-07
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Expires: 1989-03-25
Abstract
Abstract An externally controlled electromagnetic device for operating a valve mechanism to admit fresh air from an external source under pressure so as to control a supply of fresh air to an inspiration tube insertable into the trachea as far as the zone of the lung. An expiration tube is combined with the said tube to permit escape of used air and also reaches to the lung zone. The instrument, essentially by the control of frequency of valve movement, allows a rate and amount of fresh gas flow suitable for the animal species under observation.
Inventors
- 👤 Paul Bischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:18
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/20; A61M16/021; A61M16/201; A61M16/202; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
206 words
An instrument for producing breathing action of the lungs comprising a cylindrical housing, a movable tubular magnetic core within said housing and having a forwardly open longitudinal bore therein, a sleeve around the core and fast with respect to and within the housing and having a forward end portion projecting from the housing, the sleeve being provided with a first port in said forward end portion coverable by the movable core to permit selective communication between the interior of the sleeve and the ambient and provided with a second port at the opposite end portion and open to the interior of the housing, the magnetic core having a cross port registerable with the second port for selectively permitting a passage of gas from the interior of the housing into the bore of the core, a coil within the housing for moving the core in one direction, means to energize said coil, means for moving the core oppositely from said one direction, inlet means open to the interior of said housing for the connection of a source of pressurized gas thereto, and concentrIc inhale and exhale tubes at the outer end of the sleeve and in communication with the bore and the interior of the sleeve respectively.
Claim 2
Dependent Claim
206 words
An instrument for producing breathing action of the lungs comprising a cylindrical housing, a movable tubular magnetic core within said housing and having a forwardly open longitudinal bore therein, a sleeve around the core and fast with respect to and within the housing and having a forward end portion projecting from the housing, the sleeve being provided with a first port in said forward end portion coverable by the movable core to permit selective communication between the interior of the sleeve and the ambient and provided with a second port at the opposite end portion and open to the interior of the housing, the magnetic core having a cross port registerable with the second port for selectively permitting a passage of gas from the interior of the housing into the bore of the core, a coil within the housing for moving the core in one direction, means to energize said coil, means for moving the core oppositely from said one direction, inlet means open to the interior of said housing for the connection of a source of pressurized gas thereto, and concentrIc inhale and exhale tubes at the outer end of the sleeve and in communication with the bore and the interior of the sleeve respectively.
Claim 3
Dependent Claim
34 words
An instrument as claimed in claim 1, said core being reciprocatory within the sleeve, the fore of the core having the inhale tube therein and the core being slidable gastight on the inhale tube.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |