JPH0427069Y2 - - Google Patents

Info

Publication number

JPH0427069Y2

JPH0427069Y2 JP17240987U JP17240987U JPH0427069Y2 JP H0427069 Y2 JPH0427069 Y2 JP H0427069Y2 JP 17240987 U JP17240987 U JP 17240987U JP 17240987 U JP17240987 U JP 17240987U JP H0427069 Y2 JPH0427069 Y2 JP H0427069Y2

Authority

JP

Japan

Prior art keywords

switch

ventilation hole

plane part

plane

filter

Prior art date

1987-11-11

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.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• 238000009423 ventilation Methods 0.000 claims description 26
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
• 238000006073 displacement reaction Methods 0.000 claims description 3
• 230000035699 permeability Effects 0.000 claims description 3
• 239000011148 porous material Substances 0.000 claims 1
• 238000007789 sealing Methods 0.000 description 7
• 238000003466 welding Methods 0.000 description 4
• 230000000694 effects Effects 0.000 description 2
• 238000007796 conventional method Methods 0.000 description 1
• 230000007547 defect Effects 0.000 description 1
• 230000000994 depressogenic effect Effects 0.000 description 1
• 239000007788 liquid Substances 0.000 description 1
• 238000005192 partition Methods 0.000 description 1