Headgear securement system

1. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a middle layer including a plurality of hollow compressible cells mounted to the inner layer;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer.

2. The system defined in claim 1 wherein said tensioning device includes first and second strap segments constituting extensions of said belt and a tensioner for applying tension to the first and second strap segments.

3. The system defined in claim 1 wherein said belt comprises a closed loop having upper and lower runs positioned at different elevations within the outer layer and said tensioning device is connected to first and second spaced-apart locations on the loop.

4. The system defined in claim 1 wherein the belt has first and second ends located near the face opening and further including motion limiting devices for limiting movements of said belt ends away from said rear edges of the inner and outer layers.

5. The system defined in claim 1 and further including a plurality of spaced-apart slides for supporting said belt segments, each slide being connected to one or another of said layers.

6. The system defined in claim 5 wherein at least some of the slides are connected to different ones of the cells.

7. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer,

wherein said tensioning device includes first and second strap segments constituting extensions of said belt, a tensioner for applying tension to the first and second strap segments, and the first and second strap segments and the tensioner comprise an adjustable chinstrap assembly.

8. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer,

wherein said belt comprises a closed loop having upper and lower runs positioned at different elevations within the outer layer, said tensioning device is connected to first and second spaced-apart locations on the loop, said inner layer has a crown and said upper run extends around said opposite sides and crown of the inner layer.

9. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer, and

wherein said belt comprises a closed loop having upper and lower runs positioned at different elevations within the outer layer, said tensioning device is connected to first and second spaced-apart locations on the loop and the loop is composed of a single strand having opposite ends and mating connectors affixed to said ends.

10. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer,

wherein said belt comprises a closed loop having upper and lower runs positioned at different elevations within the outer layer, said tensioning device is connected to first and second spaced-apart locations on the loop and the tensioning device comprises a chinstrap assembly including a chin protector having opposite ends, a first strap segment extending from the first location on the loop to one end of the chin protector, a second strap segment extending from the second location on the loop to the opposite end of the chin protector, and a buckle for adjusting the length of at least one of the first and second strap segments.

11. The system defined in claim 10 and further including first and second motion limiters adjacent to said opposite sides which limit movement of said first and second locations on the belt loop away from said rear edges of the inner and outer layers.

12. The system defined in claim 11 wherein each of the said first and second motion limiters comprises an elongated, normally relatively slack member connected between each location on the loop and said outer layer.

13. The system defined in claim 12 wherein the connection of each slack member to the associated loop location is a releasable connection.

14. A headgear securement system comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around the sides of the inner layer substantially to the face opening, and

a tensioning device located outside the outer layer and connected to the belt segments for tensioning the belt so as to flex the sides of the inner layer inward away from the outer layer, said belt having first and second ends located near the face opening and motion limiting devices for limiting movements of said belt ends away from said rear edges of the inner and outer layers, said limiting devices each comprising a normally relatively slack member connected between the associated end of the belt and said outer layer.

15. The system defined in claim 14 wherein the connection of each slack member to the associated belt end is a releasable connection.

16. A headgear securement system comprising

an outer layer;

a relatively flexible inner layer;

a middle layer including a plurality of compressible cells mounted to the inner layer;

an inner liner composed of a plurality of resilient members, each resilient member being positioned opposite a different one of the compressible cells of the middle layer;

a relatively inextensible belt extending around the inner layer within the outer layer, and

a tensioning device connected to the belt and which tensions the belt so as to flex the inner layer inward away from the outer layer.

17. Protective headgear for positioning on a wearer's head, said headgear comprising

an outer layer having a face opening;

a relatively flexible inner layer within the outer layer, each layer having a front edge, a rear edge and opposite sides;

a first fastening device fastening together the front edges of said layers;

a second fastening device fastening together the rear edges of said layers;

a substantially inextensible belt extending around the inner layer, said belt being secured to the rear edge of the outer layer and having segments extending around said sides of the inner layer to first and second ends located near the face opening, and

a chinstrap assembly including a chin protector having opposite ends, a first strap having one end extending from the first end of the belt to one end of the chin protector and a second strap extending from the second end of the belt to the opposite end of the chin protector, said straps being slidably connected to the corresponding ends of the chin protector and having free ends which when pulled back toward the outer layer will draw the chin protector against the wearer's chin and snug the inner layer toward the wearer's head by tensioning the belt.

18. The headgear defined in claim 17 wherein the belt comprises a closed loop having upper and lower runs slidably supported by a plurality of spaced-apart slides connected to one or the other of said layers.

19. The headgear defined in claim 18 and further including fastening devices for fastening the free ends of said straps to said outer layer.

20. The headgear defined in claim 19 wherein the fastening devices include buckles adjustably positioned on said straps adjacent to the free ends thereof, and fasteners for fastening the buckles to the opposite sides of said outer layer.