Helmet having opening type chin protection bar

Apparel – Guard or protector – For wearer's head

Reexamination Certificate

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Reexamination Certificate

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06892400

ABSTRACT:
The present invention relates to a helmet having an opening type chin protection bar, which includes a helmet body having a face protection opening in a front side, a chin protection bar designed to protect a user's chin by blocking a part of the opening of the helmet body, a shield for shielding the remaining portions of the opening on an upper side of the chin protection bar, a hinge mechanism engaged to be rotatable in the upper and lower directions by engaging the chin protection bar to the left and right sides of the helmet body, and a locking mechanism designed to rotate the chin protection bar in the upper and lower directions with respect to the hinge bolt of the hinge mechanism as a shaft wherein the chin protection bar is locked in a lowered state, and is unlocked for its lifting operation.

REFERENCES:
patent: 4397047 (1983-08-01), Nava
patent: 4769857 (1988-09-01), Cianfanelli et al.
patent: 5084918 (1992-02-01), Breining et al.
patent: 5901369 (1999-05-01), Pilney
patent: 6212689 (2001-04-01), Lee
patent: 6226803 (2001-05-01), Tanaka
patent: 6237161 (2001-05-01), Lee
patent: 6249918 (2001-06-01), Lacroix
patent: 6598238 (2003-07-01), Hong et al.
patent: 20030182716 (2003-10-01), Wu

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