Patent ID: 11946525
Assignee: HEXNEST INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC F  A  B | IPC A  B  F

Claim 13:
14. An impact absorbing mat configured to be placed on a surface for decelerating a user falling onto the mat, said mat comprising:
a first deformable layer; and
a second deformable layer layered on the first layer;
an upwardly disposed top surface supported on the first and second layers;
said top surface being configured to receive an impact of a part of the user falling onto the mat at an impact velocity relative to the top surface so as to deform downward and decelerate the part of the user;
one of the first and second layers being a damper layer and the other of the first and second layers being a linear layer;
the damper layer and the linear layer each having a respective vertical thickness, and each of said layers undergoing deformation responsive to the impact of the part of the user on the top surface so as to reduce the vertical thickness thereof, and so as to decelerate the part of the user from the impact velocity thereof;
wherein the damper layer and the linear layer each provides a respective counter force against the part of the user impacting the top surface so that the impact velocity of the part of the user is decelerated as the top surface deforms downwardly;
the linear layer being configured such that the counter force against the part of the user increases as the deformation thereof increases and the velocity of the part of the user is decelerated; and
said damper layer being structured so that the counter force against the part of the user decreases as the deformation thereof increases and the velocity of the part of the user is decelerated; and
wherein the damper layer comprises baffles each having at least one air outlet structure, said air outlet structures each havinci an aperture that is configured to allow air to flow therethrough out of the baffle at any time that the pressure in the baffle is greater than pressure outside the baffle;
wherein the aperture restricts the air flowing therethrough to a restrictive flow of air such that a downward compressive force applied on the baffle due to the impact of the part of the user creates an increase of air pressure in the baffle that provides a resistance force opposing the compression due to the restriction of air flow out of the baffle, and wherein said resistance force reduces as the damper layer is compressed until pressure of air in the baffle reaches pressure outside the baffle and air ceases to flow through the aperture.