Thin straps are used as part of clothing or baggage, or bedding such as a sleeping bag. See for example spaghetti strap, shoulder strap. A strap differs from a belt mainly in that a strap is usually integral to the item of clothing; either can be used in combination with buckles.
Straps are also used as fasteners to attach and bind items, to objects, animals (for example a saddle on a horse) and people, or even to tie down people and animals, as on an apparatus for corporal punishment. Occasionally a strap is specified after what it binds or holds, e.g. chin strap.
US Patent Issued to Blackhawk Industries Product Group Unlimited LLC on Aug. 10 for "Suspension System and Chin Strap Assembly for a Helmet" (Virginia Inventors)
Aug 14, 2010; ALEXANDRIA, Va., Aug. 14 -- United States Patent no. 7,770,239, issued on Aug. 10, was assigned to Blackhawk Industries Product...
US Patent Issued to Riddell on Nov. 15 for "Buckle for a Chin Strap Assembly for a Sports Helmet" (Illinois Inventors)
Nov 22, 2011; ALEXANDRIA, Va., Nov. 22 -- United States Patent no. 8,056,151, issued on Nov. 15, was assigned to Riddell Inc. (Rosemont, Ill...