Protective collar

1. A protective collar for use with full-face crash helmets

including a collar member at least partially formed from a resilient material which in use extends peripherally entirely around a user's neck

said collar member having a recess in which a lower part of a full-face crash helmet is receivable and securable and helmet retaining means for retaining said crash helmet within said recess,

said recess having an upwardly facing bottom surface which in use abuts said lower part of said helmet and a peripherally extending wall surface which extends upwardly from said surface to a top surface of said collar, faces into said recess and in use of said collar closely fits against said lower part of said helmet around the periphery thereof

wherein in use of said collar said user's neck passes through an opening in said collar member, said opening having an upper end within said recess and inwardly facing surfaces conforming closely to at least both sides and the back of said user's neck.

2. A protective collar according to claim 1 wherein at the periphery of said opening said collar has a thickness greater than or equal to the average depth of said recess.

3. A protective collar according to claim 1 wherein a front part of said opening in use of said collar extends in a forward direction clear of said user's neck.

4. A protective collar according to claim 1 wherein said collar member has a substantially constant thickness below said recess in a direction perpendicular to said bottom surface.

5. A protective collar according to claim 1 wherein said collar member has a split at a peripheral location so that parts of said collar on opposing sides of said split are separable by a user to enable said collar to be fitted around said lower part of said helmet.

6. A protective collar according to claim 5 further including closure means for holding said parts on opposing sides of said split in defined positions against each other after fitting of said collar around said helmet.

7. A protective collar according to claim 6 wherein said closure means includes a strap secured to said collar member and having secured at one end thereof a first half of a loop-pile fastener combination, a second half of said fastener combination being secured to said collar member and located so that when said fastener halves are mated with each other said split is held closed.

8. A protective collar according to claim 7 wherein said strap is secured to an external surface of said collar member.

9. A protective collar according to claim 6 where said closure means includes a strap secured to said collar member and having secured at one end thereof a first half of a loop-pile fastener combination, a second half of said fastener combination being secured to a second end of said strap and said strap being secured to an external surface of said collar member.

10. A protective collar according to claim 1 wherein said collar member is formed as a single integral member.

11. A protective collar according to claim 5 wherein said split is at a peripheral location which in use of said collar is at the most forward point of said collar.

12. A protective collar according to claim 5 wherein said parts of said collar on opposing sides of said split have formations which in use of said collar fit cooperatively against each other.

13. A protective collar according to claim 1 wherein said collar member includes left and right formations on opposing sides which in use with said user in a looking-straight-ahead position are located adjacently to left and right upper surfaces of said users thorax between said user's neck and left and right shoulders and which are shaped and extend downwardly so as to be close to but clear of said surfaces.

14. A protective collar according to claim 1 wherein said collar member includes left and right formations on opposing sides which in use with said user in a looking-straight-ahead position are located adjacently to left and right upper surfaces of said users thorax between said user's neck and left and right shoulders so as to contact said surfaces sufficiently lightly to allow rotation of said helmet by said user without substantial restriction.

15. A protective collar according to claim 1 wherein said collar member includes at least one downwardly depending front formation at a front part of said collar member which in use is located adjacently to and clear of a clothed surface of an upper chest portion of said user and which is adapted to contact said clothed surface of said upper chest portion in the event of a predetermined amount of forward bending of said user's neck from a normal looking-straight-ahead position.

16. A protective collar according to claim 15 including two said front formations on said collar member said two front formations being laterally spaced apart from each other.

17. A protective collar according to claim 1 wherein said collar member includes a formation downwardly depending from a rear part thereof which in use is located adjacently to and clear of the nape of the neck or a surface of clothing thereon and which is adapted to contact the nape or surface of clothing in the event of a predetermined amount of rearward bending of said user's neck from a normal looking-straight-ahead position.

18. A protective collar according to claim 1 wherein said helmet retaining means includes at least one loop-and-pile fastener part secured to said collar member within said recess and positioned to mate with a cooperating part of said loop-and-pile fastener on said lower part of said helmet when said lower part is received in said recess.

19. A protective collar according to claim 1 wherein said collar member is formed at least in part from a resilient expanded plastics foam.