A 2011 UK court decisions considered the Stormtrooper armor to be industrial design, which is only protected for 15 years, and thus the armor is now in the public domain, but only in the UK. In the US it has been ruled to be under copyright. [Wikipedia]
The origins of the 15, 30, and 40 scores in tennis are believed to be medieval French. It is possible that a clock face was used on court, with a quarter move of the hand to indicate a score of 15, 30, and 45. When the hand moved to 60, the game was over.
The restraining device is apparently called a ‘scavenger’s daughter’ and was invented in the court of King Henry VIII. Rarely used historically, there is one genuine one known to exist that is still in the Tower of London. (xpost from /r/Bondage)
