Helmet

Details Helmet Helmet

2008-05-27

2008-05-27

Worrell, Danny (Department: 3765)

Apparel

Guard or protector

For wearer's head

Reexamination Certificate

active

11724437

ABSTRACT:
A helmet in which a subsidiary cap portion hardly pivots forward about an axial support means thereof as a fulcrum to undesirably move upward accidentally when a comparatively large impact acts on the helmet. A subsidiary cap portion locking mechanism which locks the subsidiary cap portion at a lower position includes a lock pin on a main cap portion and a locking recess for a lock lever on the subsidiary cap portion. While the subsidiary cap portion is in a backward state, an angle that a third straight line, which extends in a direction along which the lock pin starts to disengage from the locking recess, forms with a second straight line obtained by extending a first straight line, which extends from the axial support means of the subsidiary cap portion to the lock pin, falls within a range between an angle which is upward from the second straight line by 65° (preferably 40° and more preferably 15°) and an angle which is downward from the second straight line by 85° (preferably 60° and more preferably 35°).

REFERENCES:
patent: 5062162 (1991-11-01), Kamata
patent: 5185889 (1993-02-01), Kamata
patent: 5461731 (1995-10-01), Shida
patent: 6226803 (2001-05-01), Tanaka
patent: 6301721 (2001-10-01), Arai
patent: 6654969 (2003-12-01), Taniuchi
patent: 6711753 (2004-03-01), Arai
patent: 7065798 (2006-06-01), Kuo
patent: 7210174 (2007-05-01), Yeh
patent: 1500340 (2005-01-01), None
patent: 2000-096334 (2000-04-01), None

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