EP0252890A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Valve device
Assignee: Horda Gummifabrik AB
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Filing: 1987-07-01
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Granted: —
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Expires: 2007-07-01
Abstract
Abstract The present invention relates to an exhalation and/or inhalation valve device for protective masks, consisting of a valve seat (1) with a valve membrane (11) of compression-moulded rubber cooperating with the valve seat. The membrane (11) is secured to the valve seat (1) close to its edge and opens initially at the edge portion of the member located opposite the attachment, thus resulting in low opening resistance, directional influence on the air flowing through and reduced suppression and distortion of speech.
Inventors
- 👤 Valter Söderberg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 23:55
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/10; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A valve device, particularly intended for use as exhalation and/or inhalation valve in protective masks, consisting of a valve seat with a through-flow opening, a border surrounding the opening and an attachment portion for a valve membrane, and also a valve membrane cooperating with the valve seat, said membrane being in sealing contact with the valve seat in closed position, wherein the attachment portion (4) in the valve seat is formed in conjunction with the border (3) and that the valve membrane (11) is connected to the attachment portion (4) close to its edge.
Claim 2
Dependent Claim
94 words
A valve device, particularly intended for use as exhalation and/or inhalation valve in protective masks, consisting of a valve seat with a through-flow opening, a border surrounding the opening and an attachment portion for a valve membrane, and also a valve membrane cooperating with the valve seat, said membrane being in sealing contact with the valve seat in closed position, wherein the attachment portion (4) in the valve seat is formed in conjunction with the border (3) and that the valve membrane (11) is connected to the attachment portion (4) close to its edge.
Claim 3
Dependent Claim
38 words
A valve device as claimed in claim 1, where in the attachment portion (4) is formed integrally with and inside the border (3) and that the attachment portion is provided with attachment means for the valve membrane (11).
Claim 4
Dependent Claim
33 words
A valve device as claimed in claim 2, wherein at least one support rib (7, 8, 9) is arranged between the attachment portion (4) and the opposite part of the border (at 10).
Claim 5
Dependent Claim
31 words
A valve device as claimed in claim 2, where- i n the attachment means comprise at least one hole (5, 6) for carrying attachment studs (14) on the valve membrane (11).
Claim 6
Dependent Claim
45 words
A valve device as claimed in claim 4, wherein attachment studs (14) of the valve membrane are provided with upsets (15) to be passed through the holes (5, 6) in the attachment portion (4) and abut sealingly against the lower side of the attachment portion.
Claim 7
Dependent Claim
42 words
A valve device as claimed in claim 2, wherein the attachment portion (4) of the valve seat is provided with attachment means in the form of at least one stud designed to be passed through holes arranged in the valve membrane (11).
Claim 8
Dependent Claim
51 words
A valve device as claimed in claims 1 - 6, wherein the valve membrane (11) is provided with an attachment portion (13) of increased thickness to offer firmness in the attachment area, and a bevelled sealing edge (12) to reinforce the edge area of the membrane, thus providing a better seal.
References Cited (Backward Citations)
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