JPH0216972Y2 - - Google Patents
Info
- Publication number
- JPH0216972Y2 JPH0216972Y2 JP13094786U JP13094786U JPH0216972Y2 JP H0216972 Y2 JPH0216972 Y2 JP H0216972Y2 JP 13094786 U JP13094786 U JP 13094786U JP 13094786 U JP13094786 U JP 13094786U JP H0216972 Y2 JPH0216972 Y2 JP H0216972Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap body
- ventilation holes
- rear direction
- ventilation
- center zone
- 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 45
- 230000035939 shock Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 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
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect 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
Landscapes
- Helmets And Other Head Coverings (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094786U JPH0216972Y2 (de) | 1986-08-27 | 1986-08-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094786U JPH0216972Y2 (de) | 1986-08-27 | 1986-08-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6339125U JPS6339125U (de) | 1988-03-14 |
JPH0216972Y2 true JPH0216972Y2 (de) | 1990-05-11 |
Family
ID=31028935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13094786U Expired JPH0216972Y2 (de) | 1986-08-27 | 1986-08-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0216972Y2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02123414U (de) * | 1989-03-22 | 1990-10-11 | ||
JPH0490837U (de) * | 1990-12-04 | 1992-08-07 | ||
EP0890320B1 (de) * | 1995-08-11 | 2001-11-28 | Builmatel Co. Ltd. | Schutzhelm |
-
1986
- 1986-08-27 JP JP13094786U patent/JPH0216972Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6339125U (de) | 1988-03-14 |
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