Helmet chain strap buckle

A helmet chin strap buckle for securing a protective helmet to a wearer's head, comprising in combination:

• front and rear retention strap sections, each having a first end thereof attached to said helmet, and a second end;
• a chin strap retention section for engaging a chin portion of said wearer and terminating at free ends;
• a female snap fastener member being formed of a mid-portion, and left and right end portions formed integrally with opposite sides of said mid-portion;
• said left end portion having at least one slot within which said second end of one of said front and rear retention strap sections is insertable for strap length adjustment;
• said right end portion having at least one slot within which said second end of the other one of said front and rear retention strap sections is insertable for strap length adjustment;
• said mid-portion having a trough-like recess formed within a top region thereof;
• a male snap-fastener member being formed of a body portion and a lower end portion;
• said lower end portion having at least one slot within which one of said free ends of said chin strap retention section is insertable for strap length adjustment;
• said body portion having a post extending outwardly therefrom adjacent its top, said post having an enlarged button and a neck connecting said button to said body portion;
• said neck of said body portion of said male member being snappingly engageable within said trough-like recess formed within said top region of said female member for interlocking said male and female members together in a pivotable mode whereby said lower end portion of said male member, and said chin strap retention section inserted therein, can pivotably move with respect to said female member and said front and rear retention strap sections inserted therein;
• and
• stop means formed upon said female member for limiting said pivotable movement of said male member, and said chin strap retention section inserted therein, relative to said female member, and said front and rear retention strap sections inserted therein, within a predetermined range.