JPH0224391Y2 - - Google Patents

Info

Publication number

JPH0224391Y2

JPH0224391Y2 JP1985090835U JP9083585U JPH0224391Y2 JP H0224391 Y2 JPH0224391 Y2 JP H0224391Y2 JP 1985090835 U JP1985090835 U JP 1985090835U JP 9083585 U JP9083585 U JP 9083585U JP H0224391 Y2 JPH0224391 Y2 JP H0224391Y2

Authority

JP

Japan

Prior art keywords

protrusion

bottom plate

air

hole

cushion material

Prior art date

1985-06-18

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.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• 239000000463 material Substances 0.000 claims description 24
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
• 230000000694 effects Effects 0.000 description 4
• 239000013013 elastic material Substances 0.000 description 3
• 238000005516 engineering process Methods 0.000 description 3
• 230000001771 impaired effect Effects 0.000 description 3
• 239000012528 membrane Substances 0.000 description 3
• 238000004891 communication Methods 0.000 description 2
• 238000013022 venting Methods 0.000 description 2
• 238000000034 method Methods 0.000 description 1
• 238000005406 washing Methods 0.000 description 1
• 238000004804 winding Methods 0.000 description 1