Patent ID: 11930875
Assignee: nan
Field: Other consumer goods (Other fields)
Classification: CPC A | IPC A

Claim 3:
4. A helmet comprising:
a hard shell with an exterior surface and an interior; and
an impact reduction system comprising:
a first bladder system in the interior of the shell, where the first bladder system includes a fluid;
a second bladder system;
a first passageway that couples the first bladder system to the second bladder system, wherein the first passageway includes a series of Tesla valves that resist flow of the fluid from the first bladder system to the second bladder system when an impact occurs to the first bladder system; and
a second passageway that couples the first bladder system to the second bladder system, wherein the second passageway includes a series of Tesla valves that resist flow of the fluid from the second bladder system to the first bladder system after the fluid has passed to the first bladder system.