BE424115A - - Google Patents
Info
- Publication number
- BE424115A BE424115A BE424115DA BE424115A BE 424115 A BE424115 A BE 424115A BE 424115D A BE424115D A BE 424115DA BE 424115 A BE424115 A BE 424115A
- Authority
- BE
- Belgium
- Prior art keywords
- helmet
- walls
- wall
- sheet metal
- hardened
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000007799 cork Substances 0.000 claims description 2
- 238000005121 nitriding Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
Landscapes
- Helmets And Other Head Coverings (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE424115A true BE424115A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=85427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE424115D BE424115A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE424115A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
0
- BE BE424115D patent/BE424115A/fr unknown
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