RACK FOR HELMET PROTECTIVE PROPERTIES EVALUATION Russian patent published in 2010 - IPC G01M7/08 F41H1/02 G01N3/30 

FIELD: instrument making.

SUBSTANCE: rack for helmet protecive properties evaluation comprises platform with installed foundation, percussive mechanism for rack calibration, head model in the form of filled with water container with force-measuring sensor on a bar installed in it, neck model, expansion tank with its inlet connected to piping through valve with elastic container of head model, and its outlet is linked to excess pressure source. Platform is arranged in the form of cylindrical surface with its rotational centre on the impact direction line. Foundation comprises axle for neck model installation. It is mounted in slots of platform cylindrical surface and fixed on it by locks. Neck model is arranged with the possibility to rotate foundation axle, and it is fixed on foundation by locks. Head model container is elastic. Force-measuring sensor has spherical shape, besides centre of sensor is situated on intersection of platform cylindrical surface rotative axis and impact direction line.

EFFECT: rack provides unity of helmet protective prioperties quantitative evaluation in the case of impact on different areas of helmet in different operational conditions and atmospheric pressure variation.

1 dwg