Yale is a lock manufacturer owned by ASSA ABLOY a Swedish manufacturer with the largest sales volume. Yale is associated with the pin tumbler lock because they are the ones who have invented it. Yale Lock Manufacturing Co. was founded in 1868, in Stamford, Connecticut, USA. Linus Yale Jr. was the founder of Yale Co. and the inventor of pin tumbler lock and he also registered 8 patents in US between 1843 – 1857.