US3575206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhalation device for breathing mask
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1969-07-07
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Granted: 1971-04-20
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Expires: 1989-07-07
Abstract
Abstract An exhalation device for a respiratory mask comprises a valve member which is biased toward its seat by its own resiliency and by additional spring means which may optionally be rendered inoperative by a releasing mechanism. The mechanism comprises a manually actuatable member such as a control ring, knob or lever movable on the canister of the device to a position where a flexible cord connected to the member exerts on the additional spring a force which prevents it from acting on the valve member.
Inventors
- 👤 Paul Ulmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
An exhalation device for a respiratory mask, including a canister formed with a valve seat through which the interior of the mask is adapted to communicate with the surrounding atmosphere, a resilient valve member permanently biased toward said valve seat, resilient means cooperating with said valve member and exerting thereon an additional force biasing said valve member toward said seat and a releasing mechanism, said releasing mechanism comprising a manually actuatable member movable on said canister between a first position and a second position and a flexible cord having one end cooperating with said resilient means and its other end secured to said manually actuatable member, said first and second position of said manually actuatable member so selected that the flexible cord releases said resilient member when said manually actuatable member is in one of said positions and exerts a pulling force on said resilient means which prevents it from acting on the valve member when said manually actuatable member is in the other position.
Claim 2
Dependent Claim
165 words
An exhalation device for a respiratory mask, including a canister formed with a valve seat through which the interior of the mask is adapted to communicate with the surrounding atmosphere, a resilient valve member permanently biased toward said valve seat, resilient means cooperating with said valve member and exerting thereon an additional force biasing said valve member toward said seat and a releasing mechanism, said releasing mechanism comprising a manually actuatable member movable on said canister between a first position and a second position and a flexible cord having one end cooperating with said resilient means and its other end secured to said manually actuatable member, said first and second position of said manually actuatable member so selected that the flexible cord releases said resilient member when said manually actuatable member is in one of said positions and exerts a pulling force on said resilient means which prevents it from acting on the valve member when said manually actuatable member is in the other position.
Claim 3
Dependent Claim
50 words
An exhalation device according to claim 1, wherein said resilient means comprises a spring compressed between a bottom wall of said canister and a cup movable toward and away from the valve member and wherein said one end of the cord is secured to a central portion of the cup.
Claim 4
Dependent Claim
30 words
A device according to claim 2, wherein said canister is formed with guiding means constructed and arranged for guiding the cord axially toward the cup with respect to movement thereof.
Claim 5
Dependent Claim
48 words
A device according to claim 3, wherein said manually actuatable member consists of a control ring rotatably mounted on the canister and wherein said canister is formed with a passage (so located as to guide the cord radially of said canister between said passage and said guiding means.
Claim 6
Dependent Claim
50 words
A device according to claim 3, wherein said manually actuatable member consists of a knob slidably mounted on the bottom wall of the canister between said first and second positions and in which said cord projects through said end wall and is connected to the knob at the end thereof.
Claim 7
Dependent Claim
55 words
A device according to claim 3, wherein said manually actuatable member consists of a lever pivotably mounted on the bottom wall of the canister for 180* rotation from said first to said second position, and wherein said cord traverses the bottom wall of the canister and is connected to an intermediary point of the lever.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |