JPH01129385U - - Google Patents

Info

Publication number

JPH01129385U

JPH01129385U JP2033088U JP2033088U JPH01129385U JP H01129385 U JPH01129385 U JP H01129385U JP 2033088 U JP2033088 U JP 2033088U JP 2033088 U JP2033088 U JP 2033088U JP H01129385 U JPH01129385 U JP H01129385U

Authority

JP

Japan

Prior art keywords

smoke exhaust

opening

electric motor

speed reducer

closing drive

Prior art date

1988-02-18

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 239000000779 smoke Substances 0.000 claims description 4
• 239000003638 chemical reducing agent Substances 0.000 claims description 3
• 239000011810 insulating material Substances 0.000 claims 1
• 229910052602 gypsum Inorganic materials 0.000 description 1
• 239000010440 gypsum Substances 0.000 description 1
• 238000009413 insulation Methods 0.000 description 1

Cited By (1)