IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0264882
(2002-10-04)
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발명자
/ 주소 |
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대리인 / 주소 |
Christie, Parker & Hale, LLP
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인용정보 |
피인용 횟수 :
11 인용 특허 :
6 |
초록
▼
Air filter assemblies include an air filter housing with an air flow passageway extending therethrough, and a connection flange to facilitate attachment with an air filter member. The air filter member includes an annular air filter element disposed concentrically around the housing. The filter memb
Air filter assemblies include an air filter housing with an air flow passageway extending therethrough, and a connection flange to facilitate attachment with an air filter member. The air filter member includes an annular air filter element disposed concentrically around the housing. The filter member has a closed top at one end and a retaining band at an opposite end that includes a connection base that is configured to attach with the housing connection flange. An attachment assembly is positioned over the housing connection flange and air filter member connection base to releasibly attach the air filter member to the air filter housing. An O-ring seal is interposed between the air filter housing and member to provide a leak-tight fit therebetween. A sound attenuating chamber is disposed within the assembly to control unwanted intake air noise therein. A vacuum monitor can be attached to the assembly to assess the remaining service life of the air filter element without need for visual inspection.
대표청구항
▼
Air filter assemblies include an air filter housing with an air flow passageway extending therethrough, and a connection flange to facilitate attachment with an air filter member. The air filter member includes an annular air filter element disposed concentrically around the housing. The filter memb
Air filter assemblies include an air filter housing with an air flow passageway extending therethrough, and a connection flange to facilitate attachment with an air filter member. The air filter member includes an annular air filter element disposed concentrically around the housing. The filter member has a closed top at one end and a retaining band at an opposite end that includes a connection base that is configured to attach with the housing connection flange. An attachment assembly is positioned over the housing connection flange and air filter member connection base to releasibly attach the air filter member to the air filter housing. An O-ring seal is interposed between the air filter housing and member to provide a leak-tight fit therebetween. A sound attenuating chamber is disposed within the assembly to control unwanted intake air noise therein. A vacuum monitor can be attached to the assembly to assess the remaining service life of the air filter element without need for visual inspection. ,3-benzoxadiazole sodium salt and 4-(cyano-(2-nitrophenyl)-methyl)-7-nitro-2,1,3-benzoxadiazole sodium salt. 4. An agent for dyeing keratin fibers, wherein the agent contains at least one 7-nitro-2,1,3-benzoxadiazole compound of formula (I): wherein X is oxygen; Y1and Y9each represent a nitrogen atom.R1and R2are the same or different and, independently of one another, each represent hydrogen, a halogen atom, a (C1-C4)-alkyl group substituted (C1-C4)-alkyl group substituted with a halogen atom, a (C1-C4)-alkoxy group, a nitro group or an NRaRbgroup, the Raand Rbare the same or different and, independently of one another, each represent hydrogen, a (C1-C4)-alkyl group, an optionally substituted, aromatic carbocyclic group or a (C1-C4)-alkane carbonyl group;V represents hydrogen, an aliphatic group, an aromatic isocyclic group, a cyano group or a carbonyl function (CO)—R3, wherein R3 represents hydrogen, a hydroxy group, a (C1-C4)-alkoxy group, an amino group, a (C1-C4)-alkylamino group, a (C1-C6)-alkyl group or an aryl group;W represents a cyano group or a carbonyl function (CO)—R4, R4 representing hydrogen, a hydroxy group, a (C1-C4)-alkoxy group, an amino group, a (C1-C4)-alkylamino group, a (C1-C6)-alkyl group or an aryl group; andKat+ represents an alkali cation, an alkaline earth cation, a quaternary ammonium group, a quaternary phosphonium group or a sulfonium group.5. The agent as defined in claim 4, containing from 0.01 to 10 percent by weight of said at least one 7-nitro-2,1,3-benzoxadiazole compound of formula (I).6. The agent as defined in claim 4, containing at least one substantive dye ingredient selected from the group consisting of anionic dyes, cationic dyes, nonionic dyes, amphoteric dyes, nitro dyes azo dyes, anthra-quinone dyes and dispersion dyes.7. The agent as defined in claim 4, containing at least one polymer selected from the group consisting of natural polymers, synthetic polymers and modified polymers of natural origin and wherein said at least one polymer is a shade fastener or color fastener.8. The agent as defined in claim 4, consisting of a hair-dyeing agent.9. A method of dyeing hair, said method comprising the steps of: a) providing an agent for dyeing hair containing at least one 7-nitro-2,1,3-benzoxadiazole compound of formula (I):wherein X is oxygen; Y1and Y2each represent a nitrogen atom;R1 and R2 are the same or different and, independently of one another, each represent hydrogen, a halogen atom, a (C1-C4)-alkyl group, a substituted (C1-C4)-alkyl group substituted with a halogen atom, a (C1-C4)-alkoxy group, a nitro group or an NRaRbgroup, the Raand Rbare the same or different and, independently of one another, each represent hydrogen, a (C1-C4)-alkyl group, an optionally substituted, aromatic carbocyclic group or a (C1-C4)-alkane carbonyl group;V represents hydrogen, an aliphatic group, an aromatic isocyclic group, an aromatic heterocyclic group, a cyano group or a carbonyl function (CO)—R3, wherein R3 represents hydrogen, a hydroxy group, a (C1-C4)-alkoxy group, an amino group, a (C1-C4)-alkylamino group, a (C1-C8)-alkyl group or an aryl group;W represents a cyano group or a carbonyl function (CO)—R4, R4 representing hydrogen, a hydroxy group, a (C1-C4)-alkoxy group, an amino group, a (C1-C4)-alkylamino group, a (C1-C6)-alkyl group or an aryl group; and Kat+ represents an alkali cation, an alkaline earth cation, a quaternary ammonium group, a quaternary phosphonium group or a sulfonium group;b) applying the agent to the hair in an amount sufficient for the dyeing of the hair, depending on an amount of the hair to be dyed;c) allowing the agent applied In step b) to act on the hair at from 15° to 45° C. for about 1 to 60 minutes; andd) then rinsi ng the hair, optionally washing the hair with a shampoo and subsequently drying the hair.
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