Patent US3633601A successfully refreshed from Google Patents.
US3633601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for discharging a gas towards a space having a lower pressure
Assignee: La Spirotechnique Industrielle et Commerciale
•
Filing: 1970-04-06
•
Granted: 1972-01-11
•
Expires: 1990-04-06
Abstract
Abstract Device for discharging breathed-out gas towards a space having a lower pressure. The breathing-out moves a diaphragm which then opens a pilot valve. This opening of the pilot plane creates inside a casing the wall of which comprises another diaphragm an underpressure which lifts said another diaphragm and connects the space where is breathed-out the gas to the space with a lower pressure.
Inventors
- 👤 Serge Vez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:15
CPC Classifications
A; A61; A61M; A61M16/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/2036; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7765
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
202 words
A discharge device for gas exhaled by a user inhaling and exhaling a gas substantially at a first ambient pressure which is higher than a second pressure to which the exhaled gas is evacuated, comprising a first casing, means for connecting the interior of the first casing to the respiratory passages of the user, a first movable gastight wall closing said first casing and being exposed to said first pressure on its face opposite the interior of said first casing and the wall defining with said first casing a first expansible chamber communicating with said connecting means, a second casing in said first casing, said second casing communicating with said first chamber through at least one hole, a second movable gastight wall closing said second casing and being exposed to said first chamber on its face opposite the interior of said second casing and defining with said second casing a second expansible chamber, means coNtrolled by said second wall to control the venting of said first chamber to the space to which the exhaled gases are evacuated, and means controlled by said first wall to control the venting of said second chamber to the space to which the exhaled gases are evacuated.
Claim 2
Dependent Claim
202 words
A discharge device for gas exhaled by a user inhaling and exhaling a gas substantially at a first ambient pressure which is higher than a second pressure to which the exhaled gas is evacuated, comprising a first casing, means for connecting the interior of the first casing to the respiratory passages of the user, a first movable gastight wall closing said first casing and being exposed to said first pressure on its face opposite the interior of said first casing and the wall defining with said first casing a first expansible chamber communicating with said connecting means, a second casing in said first casing, said second casing communicating with said first chamber through at least one hole, a second movable gastight wall closing said second casing and being exposed to said first chamber on its face opposite the interior of said second casing and defining with said second casing a second expansible chamber, means coNtrolled by said second wall to control the venting of said first chamber to the space to which the exhaled gases are evacuated, and means controlled by said first wall to control the venting of said second chamber to the space to which the exhaled gases are evacuated.
Claim 3
Dependent Claim
18 words
A discharge device as claimed in claim 1, and means for manually opening or closing the last-named means.
Claim 4
Dependent Claim
36 words
A discharge device as claimed in claim 1, said second wall cooperating with a fixed member to open or close the interior of said first casing to the space to which the exhaled gases are evacuated.
Claim 5
Dependent Claim
18 words
A discharge device as claimed in claim 1, and filter means through which the exhaled gases are evacuated.
Claim 6
Dependent Claim
29 words
A discharge device as claimed in claim 1, and calibrated valve means permitting the passage of said gas at said first pressure into the interior of said first casing.
Claim 7
Dependent Claim
32 words
A discharge device as claimed in claim 1, and calibrated valve means permitting the passage of gas out of the interior of said first casing into a region at said first pressure.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |