FR2346992A1 - Safety helmet with shock-absorbent core between rigid shells - comprises non-resilient core, and permanently deformable honeycomb material with walls of thin metal, plastic or resin, esp. polyester - Google Patents
Safety helmet with shock-absorbent core between rigid shells - comprises non-resilient core, and permanently deformable honeycomb material with walls of thin metal, plastic or resin, esp. polyesterInfo
- Publication number
- FR2346992A1 FR2346992A1 FR7610112A FR7610112A FR2346992A1 FR 2346992 A1 FR2346992 A1 FR 2346992A1 FR 7610112 A FR7610112 A FR 7610112A FR 7610112 A FR7610112 A FR 7610112A FR 2346992 A1 FR2346992 A1 FR 2346992A1
- Authority
- FR
- France
- Prior art keywords
- plastic
- resin
- walls
- shock
- polyester
- 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.)
- Granted
Links
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
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/065—Corrugated or ribbed shells
-
- 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
- A42B3/10—Linings
- A42B3/12—Cushioning devices
- A42B3/124—Cushioning devices with at least one corrugated or ribbed layer
Abstract
The helmet has rigid inner and outer shells, between which is a shock-absorbing layer composed of tubular cavities running directly across from one rigid shell to the other, the walls of the cavities being made of a permanently-deformable rigid material. A permanently deformable material absorbs more of the force of a blow than a resistant material. The tubular cavities may form a honeycomb, whose walls may be of thin sheet metal, of plastic, of resin-impregnated cloth or card, or of polyester-resin-impregnated cloth. The rigid shells may be of metal or plastic, and may simply rest on the honeycomb core, or be fastened to it, or be fastened to each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7610112A FR2346992A1 (en) | 1976-04-07 | 1976-04-07 | Safety helmet with shock-absorbent core between rigid shells - comprises non-resilient core, and permanently deformable honeycomb material with walls of thin metal, plastic or resin, esp. polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7610112A FR2346992A1 (en) | 1976-04-07 | 1976-04-07 | Safety helmet with shock-absorbent core between rigid shells - comprises non-resilient core, and permanently deformable honeycomb material with walls of thin metal, plastic or resin, esp. polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2346992A1 true FR2346992A1 (en) | 1977-11-04 |
FR2346992B1 FR2346992B1 (en) | 1979-05-11 |
Family
ID=9171499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7610112A Granted FR2346992A1 (en) | 1976-04-07 | 1976-04-07 | Safety helmet with shock-absorbent core between rigid shells - comprises non-resilient core, and permanently deformable honeycomb material with walls of thin metal, plastic or resin, esp. polyester |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2346992A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3222681A1 (en) * | 1982-06-16 | 1983-12-22 | Egon 4830 Gütersloh Busch | PROTECTIVE HELMET AND METHOD FOR PRODUCING PROTECTIVE HELMETS |
FR2542668A1 (en) * | 1983-03-15 | 1984-09-21 | Claude Morin | PROCESS FOR PRODUCING A CURVED SURFACE ELEMENT FROM A RIGID BOARD OF A MATERIAL OF THE "HONEYCOMB" TYPE AND PRODUCT OBTAINED |
WO1986003383A1 (en) * | 1984-12-11 | 1986-06-19 | Airsorb Pty. Ltd. | Protective helmet and locking means |
WO1994000031A1 (en) * | 1992-06-27 | 1994-01-06 | Brine, Christopher, Andrew | Safety helmets |
WO2014177872A1 (en) * | 2013-04-30 | 2014-11-06 | Aldino Albertelli | Protective headwear |
EP3253243B1 (en) | 2015-02-04 | 2020-04-01 | Oxford University Innovation Limited | An impact absorbing structure and a helmet comprising such a structure |
-
1976
- 1976-04-07 FR FR7610112A patent/FR2346992A1/en active Granted
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3222681A1 (en) * | 1982-06-16 | 1983-12-22 | Egon 4830 Gütersloh Busch | PROTECTIVE HELMET AND METHOD FOR PRODUCING PROTECTIVE HELMETS |
FR2542668A1 (en) * | 1983-03-15 | 1984-09-21 | Claude Morin | PROCESS FOR PRODUCING A CURVED SURFACE ELEMENT FROM A RIGID BOARD OF A MATERIAL OF THE "HONEYCOMB" TYPE AND PRODUCT OBTAINED |
EP0123572A1 (en) * | 1983-03-15 | 1984-10-31 | Claude Morin | Method for the production of a curved surface element from a rigid panel of honey comb-type material, and the product obtained |
US4548665A (en) * | 1983-03-15 | 1985-10-22 | Immolding Establishment | Method for manufacturing an element having a curved surface from a rigid panel of a material of the "honeycomb" type and the product obtained |
WO1986003383A1 (en) * | 1984-12-11 | 1986-06-19 | Airsorb Pty. Ltd. | Protective helmet and locking means |
WO1994000031A1 (en) * | 1992-06-27 | 1994-01-06 | Brine, Christopher, Andrew | Safety helmets |
US5561866A (en) * | 1992-06-27 | 1996-10-08 | Leslie Ross | Safety Helmets |
WO2014177872A1 (en) * | 2013-04-30 | 2014-11-06 | Aldino Albertelli | Protective headwear |
US11122848B2 (en) | 2013-04-30 | 2021-09-21 | Aldino Albertelli | Protective headwear |
EP3253243B1 (en) | 2015-02-04 | 2020-04-01 | Oxford University Innovation Limited | An impact absorbing structure and a helmet comprising such a structure |
Also Published As
Publication number | Publication date |
---|---|
FR2346992B1 (en) | 1979-05-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |