ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,570, issued on Dec. 23, was assigned to bellicon AG (Switzerland).
"Trampoline" was invented by Gunter Kopf (Kippenheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a trampoline that has a circumferential frame and a bounce mat, which has numerous hooks. The hooks each have at least one receiver that is bordered on one side by a side wall. A cord ring with a joint is placed in each receiver in order to attach the bounce mat to the circumferential frame. The side wall has a first recess in which the joint engages. The joint is retained in the hook by the recess such that the cord ring does not slip while the tramp...