|
| US3984875 | 28 Ago 1975 | 12 Oct 1976 | Canada Cycle and Motor Company Limited | Protective head gear |
| US4042974 | 14 Oct 1975 | 23 Ago 1977 | Wheelsport Distributing Co. | Helmet face guard accessory for motorcycle riders |
| US4342122 | 14 Oct 1980 | 3 Ago 1982 | Alan H. Levine | Protective headgear |
| US4370759 | 17 Mar 1981 | 1 Feb 1983 | Pro-Line, Inc. | Face guard mount for helmets |
| US4390995 | 3 Mar 1982 | 5 Jul 1983 | | Shock damping face guard strap for football helmets |
| US4651356 | 12 Mar 1986 | 24 Mar 1987 | Pro-Line, Inc. | Helmet chin strap |
| US4821341 | 13 May 1987 | 18 Abr 1989 | | Sun-visor and headpiece combination and package therefor |
| US5220699 | 27 Jul 1992 | 22 Jun 1993 | | Surgical face mask support apparatus and method |
| US5537687 | 15 Oct 1993 | 23 Jul 1996 | | Protective face mask system using varying thicknesses of energy absorption & dissipation material |
| US5794274 | 24 Abr 1997 | 18 Ago 1998 | Riddell, Inc. | Chin protector for helmets |
| US6081932 | 24 Abr 1997 | 4 Jul 2000 | Riddell, Inc. | Chin strap assembly for use with an athletic helmet |
| US6481024 | 30 May 2000 | 19 Nov 2002 | Athletic Specialties, Inc. | Protective chin strap for helmets |
| US6804829 | 13 Sep 2002 | 19 Oct 2004 | LineWeight LLC | Advanced combat helmet system |
| US7152253 | 23 Nov 2004 | 26 Dic 2006 | Macho Products, Inc. | Chinstrap and chin cup for a protective headgear |
| US7159249 | 18 Feb 2005 | 9 Ene 2007 | MJD Innovations, LLC | Self-balancing, load-distributing helmet structure |
| US7246385 | 17 Mar 2005 | 24 Jul 2007 | MJD Innovations, L.L.C. | Helmet chin-strap harness structure |
| US7900279 | 8 Sep 2006 | 8 Mar 2011 | Riddell, Inc. | Sports helmet with clamp for securing a chin protector |
| US7921475 | 5 Dic 2005 | 12 Abr 2011 | NIKE, Inc. | Impact attenuating chin protector |
| US7975319 | 30 Sep 2005 | 12 Jul 2011 | | Helmet fastening element |
| US8056151 | 15 Oct 2009 | 15 Nov 2011 | Riddell, Inc. | Buckle for a chin strap assembly for a sports helmet |
