Helmet with removable chin bar

1. A helmet, comprising: a helmet body comprising an opening and two attachment anchors located opposite each other proximate a leading edge of the opening, each attachment anchor comprising a pivot socket and a lock support; and a chin bar removably coupled to the helmet body, the chin bar comprising two opposing ends, each end releasably coupled to a different one of the two attachment anchors and comprising a locking mechanism engaged with the lock support of the different one of the two attachment anchors and a pivot arm releasably and pivotally coupled to the pivot socket of the different one of the two attachment anchors; wherein the chin bar is pivotable between a first angle and a second angle with respect to the helmet body, and the pivot arms are releasable from the pivot sockets of the helmet body, only while the locking mechanisms of the chin bar are disengaged from the lock supports of the helmet body; wherein each pivot arm of the chin bar comprises a socket of each of the two attachment anchors of the helmet body comprises a reentrant slot having an open end wider than a closed end, the open end proximate the leading edge of the opening of the helmet body, and the closed end sized to receive the stem of the pivot button while being smaller than the head of the pivot button, and wherein the pivot arm is releasably and pivotally coupled to the pivot socket when the stem of the pivot button is inside the closed end of the reentrant slot of the pivot socket.

2. The helmet of claim 1 , wherein each locking mechanism of the chin bar comprises a biased latch arm having a barbed end, the barbed end having a front and a back, at least one of the front of each barbed end and the lock support of each of the two attachment anchors is sloped such that when the front is pressed against the lock support, the latch arm is deflected contrary to a bias, to allow the barbed end past the lock support such that the back may engage with the lock support, and wherein each locking mechanism further comprises a release button configured to move the latch arm of the locking mechanism against the bias sufficient to disengage the back of the barbed end from the lock support.

3. The helmet of claim 1 , wherein the two opposing ends of the chin bar each further comprise at least one tab configured to mate with a portion of the adjacent attachment anchor while the chin bar is coupled to the helmet body.

4. The helmet of claim 1 , wherein the helmet body comprises an outer surface having at least one tactile guide on the outer surface proximate each pivot socket of the helmet body.

5. The helmet of claim 1 , wherein the two attachment anchors are integral with an outer shell of the helmet body.

6. The helmet of claim 1 , wherein the two attachment anchors are in-molded into an energy-absorbing material of the helmet body.

7. The helmet of claim 1 , wherein the helmet body further comprises an outer surface, the chin bar comprises an outer surface, and the outer surface of the helmet body is flush with the outer surface of the chin bar proximate the two attachment anchors.

8. The helmet of claim 1 , wherein, for each of the two attachment anchors, the leading edge of the opening proximate the attachment anchor is in fluid communication with an interior cavity of the helmet body through the attachment anchor.

9. A helmet, comprising:

a helmet body comprising an opening and two attachment anchors located opposite each other proximate a leading edge of the opening, each attachment anchor comprising a pivot socket and a lock support; and

a chin bar removably coupled to the helmet body, the chin bar comprising two opposing ends, each end releasably coupled to a different one of the two attachment anchors and comprising a locking mechanism engaged with the lock support of the different one of the two attachment anchors and a pivot arm releasably and pivotally coupled to the pivot socket of the different one of the two attachment anchor;

wherein the chin bar is pivotable between a first angle and a second angle with respect to the helmet body, and the pivot arms are releasable from the pivot sockets of the helmet body, only while the locking mechanisms of the chin bar are disengaged from the lock supports of the helmet body and the chin bar is oriented at approximately the first angle with respect to the helmet body;

wherein each locking mechanism of the chin bar comprises a biased latch arm having a barbed end, the barbed end having a front and a back, at least one of the front and the lock support of each of the two attachment anchors is sloped such that when the front is pressed against the lock support, the latch arm is deflected contrary to a bias, to allow the barbed end past the lock support such that the back may engage with the lock support, and wherein each locking mechanism further comprises a release button configured to move the latch arm of the locking mechanism against the bias sufficient to disengage the back of the barbed end from the lock support; and

wherein each pivot arm of the chin bar comprises a pivot button having a stem and a head wider than the stem, wherein the pivot socket of each of the two attachment anchors of the helmet body comprises a reentrant slot having an open end wider than a closed end, the open end proximate the leading edge of the opening of the helmet body and facing away from the lock support of the same attachment anchor at an angle with respect to the helmet body that is approximately equal to the first angle, and the closed end sized to receive the stem of the pivot button while being smaller than the head of the pivot button, and wherein the pivot arm is releasably and pivotally coupled to the pivot socket when the stem of the pivot button is inside the closed end of the reentrant slot of the pivot socket.

10. The helmet of claim 9 , wherein the two opposing ends of the chin bar each further comprise at least one tab configured to mate with a portion of the adjacent attachment anchor while the chin bar is coupled to the helmet body.

11. The helmet of claim 9 , wherein the helmet body comprises an outer surface having at least one tactile guide on the outer surface proximate each pivot socket of the helmet body.

12. The helmet of claim 9 , wherein the two attachment anchors are integral with an outer shell of the helmet body.

13. The helmet of claim 9 , wherein the helmet body further comprises an outer surface, the chin bar comprises an outer surface, and the outer surface of the helmet body is flush with the outer surface of the chin bar proximate the two attachment anchors.

14. The helmet of claim 9 , wherein, for each of the two attachment anchors, the leading edge of the opening proximate the attachment anchor is in fluid communication with an interior cavity of the helmet body through the attachment anchor.

15. The helmet of claim 9 , wherein the pivot arms and locking mechanisms of the chin bar and the pivot sockets and lock supports of the helmet body are positioned such that when the pivot arms of the chin bar are pivotally coupled to the pivot sockets of the helmet body, each locking mechanism of the chin bar is aligned with a different one of the two lock supports of the helmet body.

16. The helmet of claim 9 , wherein each end of the chin bar further comprises a leading edge that is mated with the leading edge of the opening of the helmet body when the chin bar is removably coupled to the helmet body through the pivot arms and locking mechanisms of the chin bar.