EP0149590A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Protective respirator
Assignee: FLODINS FILTER AB
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Filing: 1985-01-07
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Granted: —
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Expires: 2005-01-07
Abstract
Abstract Respiratory protection means having a cup-shaped filter material body (1), the outer end of which is so executed at its edge as to exhibit an element (2) intended to make contact with the face in such a way that the nose and mouth of the wearer are enclosed within the space formed inside the cup shape. During inhalation the air from the surroundings will be obliged in this way to pass through the filter material body, whereas an exhalation valve (8) can be provided to permit exhalation. The filter material body (1) exhibits at least one strip of filter material pleated in its transverse sense, for example a strip of filter paper, which has been given said cup shape. The element intended to make contact with the face consists of a ring (2) of a material which, by casting or some similar process, has been attached to one of the edge parts of the pleated filter material body so as to form an airtight connection, whereas the opposite edge part of the filter material body has been attached in a similarly airtight fashion to a plate (3) or similar which seals the outer end edge of the filter material body.
Inventors
- 👤 Per-Erik Siversson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
A; A62; A62B; A62B23/00; A62B23/02; A62B23/025; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1107; A41D13/1115; A41D13/1138; A41D13/1146
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
271 words
Respiratory protection means comprising a cup-shaped filter material body (1), the outer end of which is so executed at its edge as to exhibit an element (2) intended to make contact with the face of a wearer in such a way that either the wearer's nose or mouth or preferably both are enclosed within the space (7) formed inside the cup shape in such a way that, at Least during inhalation, the air from the surroundings will be obliged to pass through the filter material body (1) and into said space (7), whilst an exhalation valve (8) can be provided to permit exhalation, characterized in that - the filter material body (1) exhibits in a previously disclosed fashion at least one strip of filter material (4, 5) pleated in its transverse sense, for example a strip of filter paper, wherein the ends of said one or more strips have been brought together in such a way as to form a ring which, by the spreading out of its pleats for this purpose has been given said cup shape, wherein the element intended to make contact with the face consists of a ring (2) of a material which, by casting or some similar process, has been attached to one of the edge parts of the one or more pleated filter material strips so as to form an airtight connection, whereas the opposite edge part of the filter material body has been attached in a similarly airtight fashion to a plate (3) or similar, which permits the sealing of the filter material body at the supporting, outer end edge of the face protector.
Claim 2
Dependent Claim
271 words
Respiratory protection means comprising a cup-shaped filter material body (1), the outer end of which is so executed at its edge as to exhibit an element (2) intended to make contact with the face of a wearer in such a way that either the wearer's nose or mouth or preferably both are enclosed within the space (7) formed inside the cup shape in such a way that, at Least during inhalation, the air from the surroundings will be obliged to pass through the filter material body (1) and into said space (7), whilst an exhalation valve (8) can be provided to permit exhalation, characterized in that - the filter material body (1) exhibits in a previously disclosed fashion at least one strip of filter material (4, 5) pleated in its transverse sense, for example a strip of filter paper, wherein the ends of said one or more strips have been brought together in such a way as to form a ring which, by the spreading out of its pleats for this purpose has been given said cup shape, wherein the element intended to make contact with the face consists of a ring (2) of a material which, by casting or some similar process, has been attached to one of the edge parts of the one or more pleated filter material strips so as to form an airtight connection, whereas the opposite edge part of the filter material body has been attached in a similarly airtight fashion to a plate (3) or similar, which permits the sealing of the filter material body at the supporting, outer end edge of the face protector.
Claim 3
Dependent Claim
75 words
Respiratory protection means as claimed in Patent CLaim 1, characterized in that the ring (2) which forms the element intended to make contact with the face and the plate (3) or similar at the outer end edge of the filter material body (1) are made from a plastics material, preferably a polyvinyl choloride produced by the gelation of plastisol, attached by casting to each of the end edge parts of the filter material body (1).
Claim 4
Dependent Claim
60 words
Respiratory protection means as claimed in Patent CLaim 2, characterized in that the filter material body (1) consisting of said strip or strips (4, 5) connecting together said ring (2) and plate (3) constitutes the structure of the respiratory protection means capable of providing the necessary mechanical strength to hold the ring and the plate in their pre-determined relative positions.
Claim 5
Dependent Claim
68 words
Respiratory protection means as claimed in Patent Claims 2 or 3, characterized in that the ring (2) provided in order to make contact with the face is so arranged as to form an attachment for an adjustable strap (13) for use when wearing the face protector by attachment components (14) for the adjustable strap having been combined with the material of the ring, preferably during said casting process.
Claim 6
Dependent Claim
52 words
Respiratory protection means as claimed in Patent Claims 1, 2, 3 or 4, c h a r a c t e r i z e d in that said plate (3) at the outer end edge of the filter material body (1) is so executed as to support an exhalation valve (8).
References Cited (Backward Citations)
No citation records indexed.
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