EP0124263A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Emergency mask
Assignee: Toyo CCI KK
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Filing: 1984-03-29
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Granted: —
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Expires: 2004-03-29
Abstract
Abstract The disclosed emergency mask has an air-purifying canister containing a combination of a smoke-filter, a desiccant, an adsorbent, and hopkalite catalyzer, so as to remove noxious gas generated during fire.
Inventors
- 👤 Tsuneyoshi Takase
- 👤 Yoriyuki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/04; A62B23/00; A62B23/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
97 words
A canister for an emergency mask having a face piece adapted to come in contact with a respiratory face organ of a user, and a canister-holder airtightly holding the canister and airtightly coupled with said face piece so as to communicate therewith, said canister containing air-purifying antidote therein, said air-purifying agent being a combination of a smoke-filter, a desiccant, an adsorbent, and a hopkalite catalyzer, whereby said antidote removes black smoke, white smoke, carbon monoxide, hydrogen chloride gas, chlorine gas, cyanic acid, ammonia, benzene, acrolein and other aldehydes, nitrogen oxides, and other noxious gases generated during fire.
Claim 2
Dependent Claim
97 words
A canister for an emergency mask having a face piece adapted to come in contact with a respiratory face organ of a user, and a canister-holder airtightly holding the canister and airtightly coupled with said face piece so as to communicate therewith, said canister containing air-purifying antidote therein, said air-purifying agent being a combination of a smoke-filter, a desiccant, an adsorbent, and a hopkalite catalyzer, whereby said antidote removes black smoke, white smoke, carbon monoxide, hydrogen chloride gas, chlorine gas, cyanic acid, ammonia, benzene, acrolein and other aldehydes, nitrogen oxides, and other noxious gases generated during fire.
Claim 3
Dependent Claim
95 words
An emergency mask comprising a face piece adapted to come in contact with a respiratory face organ of a user; a canister-holder airtightly coupled with said face piece so as to communicate therewith; and a canister airtightly held by said canister-holder and containing air-purifying antidote therein, said air-purifying agent being a combination of a smoke-filter, a drier, an adsorbent, and a hopkalite catalyzer, whereby said antidote removes black smoke, white smoke, carbon monoxide, cyanic acid, hydrogen chloride gas, chlorine gas, ammonia, benzene, acrolein and other aldehydes, nitrogen oxides, and other noxious gases generated during fire.
Claim 4
Dependent Claim
95 words
An emergency mask comprising a face piece adapted to come in contact with a respiratory face organ of a user; a canister-holder airtightly coupled with said face piece so as to communicate therewith; and a canister airtightly held by said canister-holder and containing air-purifying antidote therein, said air-purifying agent being a combination of a smoke-filter, a drier, an adsorbent, and a hopkalite catalyzer, whereby said antidote removes black smoke, white smoke, carbon monoxide, cyanic acid, hydrogen chloride gas, chlorine gas, ammonia, benzene, acrolein and other aldehydes, nitrogen oxides, and other noxious gases generated during fire.
Claim 5
Dependent Claim
33 words
An emergency mask as set forth in claim 2, wherein said emergency mask further comprises a hood airtightly secured to said face piece and adapted to cover at least face of said user.
Claim 6
Dependent Claim
29 words
A canister for an emergency mask as set forth in claim 1, wherein said drier in said canister is selected from the group consisting of zeolite and silica gel.
Claim 7
Dependent Claim
30 words
A canister for an emergency mask as set forth in claim 1, wherein said adsorbent is selected from the group consisting of activated carbon fiber sheet and granular activated carbon.
Claim 8
Dependent Claim
29 words
A canister for an emergency mask as set forth in claim 1, wherein said hopkalite catalyzer has a specific surface area of larger than about 140 m 2 /g.
Claim 9
Dependent Claim
29 words
A canister for an emergency mask as set forth in claim 1, wherein said hopkalite catalyzer has a specific surface area of larger than about 180 m 2 /g.
Claim 10
Dependent Claim
26 words
A canister for an emergency mask as set forth in claim 1, wherein said hopkalite catalyzer contains major ingredients of copper oxide and manganese dioxide alone.
Claim 11
Dependent Claim
29 words
A canister for an emergency mask as set forth in claim 1, wherein said hopkalite catalyzer contains about 15% by weight to about 30% by weight of copper oxide.
Claim 12
Dependent Claim
92 words
An emergency mask as set forth in claim 2, wherein said canister has a rectangular cross-section at right angles to height (c) taken in flowing direction of air therethrough, said rectangular cross-section having a length (b) which is longer than 1.15 times of a width (a) thereof (b>1.15a), said height (c) being not shorter than said width (a) thereof, said canister being held by said canister-holder so as to extend more in vertical direction and forward direction away from said face piece than in lateral direction in parallel to said face piece.
Claim 13
Dependent Claim
28 words
An emergency mask as set forth in claim 10, wherein said length (b) of said rectangular cross-section is longer than 1.2 times of the width (a) thereof (b>1.2a).
Claim 14
Dependent Claim
33 words
An emergency mask as set forth in claim 10, wherein said emergency mask further comprises a handy carrier bag in which said face piece and said canister-holder holding said canister can be packed.
Claim 15
Dependent Claim
96 words
An emergency mask as set forth in claim 2, wherein said canister has an elliptic cross-section at right angles to height (c) taken in flowing direction of air therethrough, said elliptic cross-section having a major axis (m) which is longer than 1.15 times of a minor axis (n) thereof (m>1.15n), said height (c) being not shorter than said minor axis (n) thereof, said canister being held by said canister-holder so as to extend more in vertical direction and in forward direction away from said face piece than in lateral direction in parallel to said face piece.
Claim 16
Dependent Claim
16 words
An emergency mask as set forth in claim 3, wherein said hood is heat-resistive and heat-reflective.
Claim 17
Dependent Claim
28 words
An emergency mask as set forth in claim 3, wherein said hood has a transparent window having a heat-resistive plastics sheet with a thin coating of heat-reflective metal.
Claim 18
Dependent Claim
20 words
An emergency mask as set forth in claim 15, wherein said thin coating is evaporated on said transparent plastics sheet.
Claim 19
Dependent Claim
40 words
An emergency mask as set forth in claim 2, wherein said canister holder has a passage toward said face piece, said passage having a cross-section which has substantially the same size and dimension as those of said canister held thereby.
References Cited (Backward Citations)
No citation records indexed.
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