Expanded field of view for full-face motorcycle helmet

Abstract

A full-face motorcycle helmet can include a faceport opening that includes an upper edge, a lower edge, and an A-pillar extending between the upper edge of the faceport and the lower edge of the faceport. The chinbar can include a recess that begins immediately adjacent the A-pillar and includes a chinbar height Hc 1 within the recess that is greater than or equal to 60 millimeters (mm) and a chin bar height Hc 2 outside and immediately adjacent the recess that is greater than or equal to 70 mm. The recess can include a height Hr that is greater than or equal to 5 mm for a distance in a range of 15-60 mm. The recess can further include a stair-step between the bottom of the recess and the top of the recess comprising a length that is less than or equal to 35 mm.

What is claimed is: 
     
         1 . A full-face motorcycle helmet comprising:
 a hard outer shell;   an energy absorbing material disposed within the hard outer shell; and   a faceport opening that extends through the hard outer shell and to an interior space of the helmet, the faceport comprising an upper edge, a lower edge defined by an upper edge of a non-removable chinbar, the faceport further defined on a first side by an A-pillar extending between the upper edge of the faceport and the lower edge of the faceport, the faceport comprising a height Ha;   wherein the chinbar comprises a recess that begins immediately adjacent the A-pillar and comprises a chinbar height Hc 1  within the recess that is greater than or equal to 60 millimeters (mm) and a chin bar height Hc 2  outside and immediately adjacent the recess that is greater than or equal to 70 mm;   wherein the recess comprises a height Hr between a bottom of the recess and a top of the recess that is greater than or equal to 5 mm for a distance in a range of 15-60 mm, wherein the recess can further comprise a stair-step between the bottom of the recess and the top of the recess comprises a length that is less than or equal to 35 mm.   
     
     
         2 . The full-face motorcycle helmet of  claim 1 , wherein the chinbar height Hc 1  is a minimum chinbar height within the recess. 
     
     
         3 . The full-face motorcycle helmet of  claim 1 , wherein the faceport comprises a maximum height (Ha max) that is equal to or less than 80 mm. 
     
     
         4 . The full-face motorcycle helmet of  claim 1 , further comprising a rearmost point of the faceport disposed within a lower half of the height Ha of the A-pillar. 
     
     
         5 . The full-face motorcycle helmet of  claim 1 , further comprising a maximum radius of curvature between the A-pillar and the bottom of the recess that is less than or equal to 50 mm. 
     
     
         6 . The full-face motorcycle helmet of  claim 1 , further comprising a face shield retractably coupled to the full-face helmet over the faceport. 
     
     
         7 . A full-face motorcycle helmet comprising:
 a hard outer shell;   an energy absorbing material disposed within the hard outer shell; and   a faceport opening that extends through the hard outer shell and to an interior space of the helmet, the faceport comprising an upper edge, a lower edge defined by an upper edge of a chinbar, the faceport further defined on a first side by an A-pillar extending between the upper edge of the faceport and the lower edge of the faceport, the faceport comprising a height Ha;   wherein the chinbar comprises a recess that begins adjacent the A-pillar and comprises a height Hr between a bottom of the recess and a top of the recess that is greater than or equal to 3 millimeters (mm) for a distance in a range of 10-60 mm;   wherein the chinbar comprises a stair-step between the bottom of the recess and the top of the recess comprises a length that is less than or equal to 40 mm.   
     
     
         8 . The full-face motorcycle helmet of  claim 7 , wherein a chinbar height Hc 1  within the recess and adjacent the A-pillar is a minimum chinbar height within the recess. 
     
     
         9 . The full-face motorcycle helmet of  claim 7 , wherein the faceport comprises a maximum height (Ha max) that is equal to or less than 95 mm. 
     
     
         10 . The full-face motorcycle helmet of  claim 7 , further comprising a rearmost point of the faceport disposed within a lower half of the height Ha of the A-pillar. 
     
     
         11 . The full-face motorcycle helmet of  claim 7 , further comprising a maximum radius of curvature between the A-pillar and the bottom of the recess that is less than or equal to 50 mm. 
     
     
         12 . The full-face motorcycle helmet of  claim 7 , further comprising a face shield retractably coupled to the full-face helmet over the faceport. 
     
     
         13 . The full-face motorcycle helmet of  claim 7 , wherein the chinbar further comprises a chinbar height Hc 1  within the recess that is greater than or equal to 60 mm and a chin bar height Hc 2  outside and adjacent the recess that is greater than or equal to 65 mm. 
     
     
         14 . A full-face motorcycle helmet comprising:
 a hard outer shell;   an energy absorbing material disposed within the hard outer shell; and   a faceport opening that extends through the hard outer shell and to an interior space of the helmet, the faceport comprising an upper edge, a lower edge defined by an upper edge of a chinbar, the faceport further defined on a first side by an A-pillar extending between the upper edge of the faceport and the lower edge of the faceport, the faceport comprising a height Ha;   wherein the chinbar comprises a recess that begins adjacent the A-pillar and comprises a height Hr between a bottom of the recess and a top of the recess that is greater than or equal to 3 millimeters (mm);   wherein the chinbar comprises a stair-step between the bottom of the recess and the top of the recess that comprises a length that is less than or equal to 40 mm.   
     
     
         15 . The full-face motorcycle helmet of  claim 14 , wherein the chinbar height Hc 1  is a minimum chinbar height within the recess. 
     
     
         16 . The full-face motorcycle helmet of  claim 14 , wherein the faceport comprises a maximum height (Ha max) that is equal to or less than 95 mm. 
     
     
         17 . The full-face motorcycle helmet of  claim 14 , further comprising a rearmost point of the faceport disposed within a lower half of the height Ha of the A-pillar. 
     
     
         18 . The full-face motorcycle helmet of  claim 14 , further comprising a maximum radius of curvature between the A-pillar and the bottom of the recess that is less than or equal to 50 mm. 
     
     
         19 . The full-face motorcycle helmet of  claim 14 , further comprising a face shield retractably coupled to the full-face helmet over the faceport. 
     
     
         20 . The full-face motorcycle helmet of  claim 14 , wherein the chinbar further comprises a chinbar height Hc 1  within the recess that is greater than or equal to 60 mm and a chin bar height Hc 2  outside and adjacent the recess that is greater than or equal to 65 mm.