Hard hat

The ornamental design for a hard hat, as shown and described.

FIG. 1 is a right elevation view of a hard hat showing my new design, the opposite side being a mirror image of the shown;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

Patent	Priority	Assignee	Title
4993081,	Feb 28 1990	SHADE AHEAD, INC	Flexible sun shield
5208916,	Aug 17 1992		Sunglass assembly for visored headgear
5669075,	Jan 19 1996		Hat providing ultra violet radiation protection
5701609,	Sep 18 1995		Protective drape for hard hats and the like
6233745,	Jul 30 1999		Hat supported neck cover or shade
6305029,	Jul 03 2000		Protective headwear with decorative and utilitarian attachments
6996852,	Aug 18 2003		Head covering
7406721,	Mar 16 2006	PROTECTIVE INDUSTRIES PTY LTD	Protection attachment for a safety helmet
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20080066214,
20090064385,
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D402088,	Nov 13 1997		Draped hat
D420493,	Nov 06 1998	Tony, Blake	Baseball type cap with protective flap
D424665,	Apr 15 1999	AS IP Holdco, LLC	Sink
D583507,	Jan 22 2007		Helmet
D591485,	Feb 28 2008	Yupoong, Inc.	Golf cap
D594185,	Nov 28 2008		Sun hat
D625081,	Oct 22 2009		Hat with adjustable shading

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