US PATENT SUBCLASS 2 / 6.8
.~.~.~ Having movable mechanical energy absorbing means (e.g., spring, etc.)

Current as of: June, 1999
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455  DF  GUARD OR PROTECTOR {12}
410  DF  .~ For wearer's head {14}
6.6  DF  .~.~ Soldier's (i.e., ground based trooper) helmet {2}
6.8.~.~.~ Having movable mechanical energy absorbing means (e.g., spring, etc.)

DEFINITION

Classification: 2/6.8

Having movable mechanical energy absorbing means (e.g., spring, etc.):

(under subclass 6.6) Soldier's helmet including a mechanical

component such as a spring, pivot, etc., which is configured so as to move relative to the soldier's head so as to absorb some of the impact force imparted to the helmet.