US 12,240,401 B2
Negative poisson's ratio materials for impact protection devices
Joon Bu Park, Las Vegas, NV (US)
Filed by Joon Bu Park, Las Vegas, NV (US)
Filed on Apr. 12, 2024, as Appl. No. 18/633,808.
Application 18/633,808 is a continuation of application No. 18/157,473, filed on Jan. 20, 2023, granted, now 11,975,669.
Prior Publication US 2024/0253588 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B60R 21/207 (2006.01); A41D 13/015 (2006.01); B60R 21/0136 (2006.01); B60R 21/235 (2006.01)
CPC B60R 21/207 (2013.01) [A41D 13/015 (2013.01); B60R 21/0136 (2013.01); B60R 21/235 (2013.01); B60R 2021/23504 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An impact protection system comprising:
an airbag comprising a first material having a negative Poisson's ratio and a second material having a positive Poisson's ratio; and
an expulsion source coupled to the airbag and configured to expand the airbag from a constricted state to a deployed state in response to detection of an impact.