JPH0516182Y2 - - Google Patents
Info
- Publication number
- JPH0516182Y2 JPH0516182Y2 JP1988141169U JP14116988U JPH0516182Y2 JP H0516182 Y2 JPH0516182 Y2 JP H0516182Y2 JP 1988141169 U JP1988141169 U JP 1988141169U JP 14116988 U JP14116988 U JP 14116988U JP H0516182 Y2 JPH0516182 Y2 JP H0516182Y2
- Authority
- JP
- Japan
- Prior art keywords
- shell material
- helmet
- inner shell
- air
- outer shell
- 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 - Lifetime
Links
- 239000011257 shell material Substances 0.000 claims description 89
- 239000000463 material Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000000071 blow moulding Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920006328 Styrofoam Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000008261 styrofoam Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
Landscapes
- Helmets And Other Head Coverings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988141169U JPH0516182Y2 (US06534493-20030318-C00166.png) | 1988-10-31 | 1988-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988141169U JPH0516182Y2 (US06534493-20030318-C00166.png) | 1988-10-31 | 1988-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261931U JPH0261931U (US06534493-20030318-C00166.png) | 1990-05-09 |
| JPH0516182Y2 true JPH0516182Y2 (US06534493-20030318-C00166.png) | 1993-04-28 |
Family
ID=31406003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988141169U Expired - Lifetime JPH0516182Y2 (US06534493-20030318-C00166.png) | 1988-10-31 | 1988-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516182Y2 (US06534493-20030318-C00166.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2532561A1 (en) | 2003-07-18 | 2005-01-27 | Builmatel Co., Ltd. | Safety hat |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285611U (US06534493-20030318-C00166.png) * | 1975-12-17 | 1977-06-25 | ||
| JPS5587328U (US06534493-20030318-C00166.png) * | 1978-12-09 | 1980-06-16 | ||
| JPS59113325U (ja) * | 1983-01-20 | 1984-07-31 | 本田技研工業株式会社 | ヘルメツト |
-
1988
- 1988-10-31 JP JP1988141169U patent/JPH0516182Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0261931U (US06534493-20030318-C00166.png) | 1990-05-09 |
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