Patent attributes
A protective helmet includes a primary inner shell, a first outer impact shell, and a second outer impact shell. The primary inner shell is configured to be worn on a user's head and the primary inner shell comprises a crown portion and a rear portion. The first outer impact shell is located above the crown portion and the second outer impact shell is located above the rear portion. Each of the first and second outer impact shells has a first end and a second end. The first end is hingedly secured to the primary inner shell and the second end is coupled to the primary inner shell by at least one shock absorber. The at least one first shock absorber is configured to resist rotational movement of the first and second outer impact shells toward the crown and rear portions of the primary inner shell.