DED0020441MA - - Google Patents

Info

Publication number

DED0020441MA

DED0020441MA DED0020441MA DE D0020441M A DED0020441M A DE D0020441MA DE D0020441M A DED0020441M A DE D0020441MA

Authority

DE

Germany

Prior art keywords

emergency exit

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filter material

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shaft

Prior art date

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

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• 239000000463 material Substances 0.000 claims description 40
• 239000004576 sand Substances 0.000 claims description 13
• 238000005192 partition Methods 0.000 claims description 5
• 230000001681 protective effect Effects 0.000 claims description 4
• 239000003795 chemical substances by application Substances 0.000 claims description 3
• 239000004744 fabric Substances 0.000 claims description 3
• 239000011253 protective coating Substances 0.000 claims description 2
• 230000000284 resting effect Effects 0.000 claims description 2
• 241000220317 Rosa Species 0.000 claims 1
• 230000001147 anti-toxic effect Effects 0.000 claims 1
• 241000909536 Gobiesocidae Species 0.000 description 1
• 238000010073 coating (rubber) Methods 0.000 description 1
• 239000008187 granular material Substances 0.000 description 1
• 231100000614 poison Toxicity 0.000 description 1
• 231100000572 poisoning Toxicity 0.000 description 1
• 230000000607 poisoning effect Effects 0.000 description 1
• 230000007096 poisonous effect Effects 0.000 description 1
• 239000000126 substance Substances 0.000 description 1