×

Helmet

  • US 5,546,609 A
  • Filed: 08/10/1994
  • Issued: 08/20/1996
  • Est. Priority Date: 01/10/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A helmet assembly for providing an indication when a predetermined axial compressive force tending to cause serious injury to the wearer is applied thereto, said assembly comprising:

  • a rigid helmet having a lower rim for at least partially encircling the head of the wearer, said helmet being defined by an exterior surface including a crown area;

    a signalling device disposed within said helmet for providing a signal to said wearer when a predetermined amount of axial compressive force is applied to said crown area; and

    sensor means for actuating said signalling device in response to an external impact on said crown area with said predetermined amount of axial compressive force;

    said helmet assembly further comprising an extensible means generally disposed along said lower rim and normally not projecting substantially below said lower rim but being extendable therebelow to engage the shoulders of the wearer and substantially transfer to the shoulders the force of an external impact on the crown area of said helmet; and

    gas-operable means carried by said helmet for extending said extensible means to engage the shoulders of a wearer within less than 25 milliseconds of an external impact on said crown area of said helmet, said gas-operable means including means carried by said helmet for almost instantaneously generating gas for operating said gas-operable means;

    said sensor means being constructed and arranged to operate said gas-generating means in response to said external impact with said predetermined amount of force to rapidly extend said extensible means to engage the shoulders of a wearer so as to be able to transfer the impact force to the shoulders instead of directly through said helmet and head of the wearer generally axially to the cervical spine of the wearer.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×