"Certain embodiments of the present invention may also include a bench engagement member defined by upper and lower prongs. The lower prong may be integrally connected to the upper prong, which may be one of the bench-engaging support arms through an intermediate upright, which may be a portion of an upright support. A bench retention cavity is defined between the upper prong, such as the bench-engaging support arm, and the lower prong. The stadium bench is configured to be sandwiched between the upper and lower prongs within the bench retention cavity. The seat frame may be mounted to the stadium bench by urging the seat frame into the stadium bench through a rear end of the stadium bench."
Dupa cum se arata mai sus, se pare ca nu sunt inele, sunt un fel de furci, stifturi, cum se spune in engleza "prongs", dar daca sunt "rings", vor fi traduse ca si inele.


Read more: http://www.faqs.org/patents/app/20090174240#ixzz0kQflk88p