Helmet structure
OwnerWilliam S. Griffithsinventor
Life of this patent
Estimating the term…
Abstract
A helmet is constructed with a hard surfaced, limitedly flexible shell lined with an energy absorbing material having an inner conforming liner adapted to the shape of the head or skull of a wearer for maximum comfort and safety. There may also be provided a transfer layer on the interior surface of the energy absorbing liner and formed of a flexible layer of incompressible fluid for dispersing impact forces.
Claims5
An improved helmet structure comprising a limitedly flexible outer shell having the shape of the head of a person and adapted for deflection adjacent the opening therein so as to fit over the head of a person, a conformal layer of a slowly conforming thermoplastic or pressure deformable material within said shell disposed on a substantial area of the interior surface of said shell for conforming to the physical configuration of the skull of a wearer of the helmet in physical engagement with a substantial portion of such skull, an impact absorbing layer disposed between said shell and said conformal layer and extending over a substantial area of the interior of said shell and a transfer layer of substantially incompressible fluid or gel disposed between said impact absorbing layer and said conformal layer and having a thin semirigid liner adjacent said impact absorbing layer for applying a substantially uniform pressure over the surface of said conformal layer upon the application of a force to the transfer layer from said energy absorbing layer.
An improved helmet structure comprising a limitedly flexible outer shell having the shape of the head of a person and adapted for deflection adjacent the opening therein so as to fit over the head of a person, a conformal layer of a slowly conforming thermoplastic or pressure deformable material within said shell disposed on a substantial area of the interior of said shell for conforming to the physical configuration of the skull of a wearer of the helmet in physical engagement with a substantial portion of such skull, an impact absorbing layer disposed between said shell and said conformal layer and extending over a substantial area of the interior of said shell and a transfer layer of a substantially incompressible flowable material disposed between said impact absorbing layer and said conformal layer.
An improved helmet structure comprising
- a limitedly flexible exterior shell having a continuous front and bottom opening that is narrower than the interior of the shell and being resiliently deformable thereat for fitting over the head of a wearer to close thereabout,
- a first layer of impact absorbing material disposed on the inner surface of said outer shell and extending over substantially all of the interior surface thereof,
- a transfer layer disposed on said first layer within said shell and comprising a substantially incompressible nonsolid deformable material which converts an applied force to an equal pressure therethrough, and
- an inner conformal layer disposed on said transfer layer and formed of a material that is slowly deformable and substantially incompressible by rapidly applied forces adapted to conform to the shape of the skull of a wearer of the helmet so as to contact at least a substantial area of such skull.
Dependencies are inferred from the claim text.