JPS639539Y2 - - Google Patents
Info
- Publication number
- JPS639539Y2 JPS639539Y2 JP1982201369U JP20136982U JPS639539Y2 JP S639539 Y2 JPS639539 Y2 JP S639539Y2 JP 1982201369 U JP1982201369 U JP 1982201369U JP 20136982 U JP20136982 U JP 20136982U JP S639539 Y2 JPS639539 Y2 JP S639539Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- helmet
- cap body
- chin guard
- intake port
- 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
- 239000000463 material Substances 0.000 claims description 11
- 230000035939 shock Effects 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 description 5
- 229920006327 polystyrene foam Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011496 polyurethane 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 |
---|---|---|---|
JP20136982U JPS59109727U (ja) | 1982-12-29 | 1982-12-29 | ヘルメツト |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20136982U JPS59109727U (ja) | 1982-12-29 | 1982-12-29 | ヘルメツト |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59109727U JPS59109727U (ja) | 1984-07-24 |
JPS639539Y2 true JPS639539Y2 (it) | 1988-03-22 |
Family
ID=30426868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20136982U Granted JPS59109727U (ja) | 1982-12-29 | 1982-12-29 | ヘルメツト |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59109727U (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63159508A (ja) * | 1986-12-17 | 1988-07-02 | 昭栄化工株式会社 | ヘルメツト |
JPS63159507A (ja) * | 1986-12-17 | 1988-07-02 | 昭栄化工株式会社 | ヘルメツト |
JPH0435391Y2 (it) * | 1986-12-19 | 1992-08-21 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054953A (en) * | 1975-09-02 | 1977-10-25 | Philippe De Barsy | Crash helmet |
US4081865A (en) * | 1977-07-08 | 1978-04-04 | Bergee Mark A | Protective helmet and ventilating system therefor |
-
1982
- 1982-12-29 JP JP20136982U patent/JPS59109727U/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054953A (en) * | 1975-09-02 | 1977-10-25 | Philippe De Barsy | Crash helmet |
US4081865A (en) * | 1977-07-08 | 1978-04-04 | Bergee Mark A | Protective helmet and ventilating system therefor |
Also Published As
Publication number | Publication date |
---|---|
JPS59109727U (ja) | 1984-07-24 |
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