JPH0216971Y2 - - Google Patents

Info

Publication number

JPH0216971Y2

JPH0216971Y2 JP13094686U JP13094686U JPH0216971Y2 JP H0216971 Y2 JPH0216971 Y2 JP H0216971Y2 JP 13094686 U JP13094686 U JP 13094686U JP 13094686 U JP13094686 U JP 13094686U JP H0216971 Y2 JPH0216971 Y2 JP H0216971Y2

Authority

JP

Japan

Prior art keywords

cap body

ventilation

ventilation holes

grooves

cap

Prior art date

1986-08-27

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 55
• 230000035939 shock Effects 0.000 description 5
• 210000004243 sweat Anatomy 0.000 description 5
• 230000003014 reinforcing effect Effects 0.000 description 2
• JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
• 238000010521 absorption reaction Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 239000006260 foam Substances 0.000 description 1
• 239000011347 resin Substances 0.000 description 1
• 229920005989 resin Polymers 0.000 description 1