A compressible liner 1110 for impact protection, comprising three substantially co-extensive layers 1124, 1128, 1160 mutually engaged by respective arrays of cone-like protuberances 1130, 1162 and cone-like recesses 1132, 1161. The projections may be all outward facing, or alternatively all inward facing. The protuberances of two layers may be the same or different heights. The outer layer is substantially smooth, and at least a portion of the intermediate layer has a different compressibilty to that of an adjacent layer, providing for decoupling of the layers in an oblique impact. The intermediate layer is preferably of uniform compressibility. One or more of the layers may be a one piece moulding. At least one of the layers comprising a number of keys (1704, 1705, fig.14) to prevent transverse separation, the keys comprising integral orthogonally engageable male and female members. The layers may be formed from foam expanded polystyrene or viscoelastic foam. Also claimed is a helmet incorporating such a liner.
A triple layered compressible liner for impact protection
2016-03-23
Patent
Electronic Resource
English
IPC: | A42B Hüte , HATS / A41D Oberbekleidung , OUTERWEAR / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B65D Behältnisse zur Lagerung oder zum Transport von Gegenständen oder Materialien [Container], z.B. Säcke, Beutel, Fässer, Flaschen, Dosen, Kästen, Büchsen, Schachteln, Packkörbe, Tonnen, Gläser, Flüssigkeitsbehälter, Trichtersilos, Transportbehälter , CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS |
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938