JPH0437857Y2 - - Google Patents
Info
- Publication number
- JPH0437857Y2 JPH0437857Y2 JP12439887U JP12439887U JPH0437857Y2 JP H0437857 Y2 JPH0437857 Y2 JP H0437857Y2 JP 12439887 U JP12439887 U JP 12439887U JP 12439887 U JP12439887 U JP 12439887U JP H0437857 Y2 JPH0437857 Y2 JP H0437857Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap body
- opening
- shell
- shield plate
- ventilation gap
- 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.)
- Expired
Links
- 238000009423 ventilation Methods 0.000 claims description 33
- 230000035939 shock Effects 0.000 description 8
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Helmets And Other Head Coverings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12439887U JPH0437857Y2 (zh) | 1987-08-14 | 1987-08-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12439887U JPH0437857Y2 (zh) | 1987-08-14 | 1987-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6430324U JPS6430324U (zh) | 1989-02-23 |
| JPH0437857Y2 true JPH0437857Y2 (zh) | 1992-09-04 |
Family
ID=31374093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12439887U Expired JPH0437857Y2 (zh) | 1987-08-14 | 1987-08-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437857Y2 (zh) |
-
1987
- 1987-08-14 JP JP12439887U patent/JPH0437857Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6430324U (zh) | 1989-02-23 |
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