デフロックはいつ開発された
Some other automatic lockers operate as an open differential until wheel slip is encountered and then they lock up. This style generally uses an internal governor to monitor vehicle speed and wheel slip. An example of this is the "Eaton Automatic Locking Differential" (ALD), or "Eaton Automatic Differential Lock" (ADL), developed by the Eaton Corporation and introduced in 1973 for GM's "Rounded-Line" C/K Series pickups and utilities. The Eaton ADL is sometimes incorrectly called the "Gov-Lok", despite neither GM nor Eaton ever calling it by that name. "Gov-Lok" is rather an unofficial name of unknown origin that gained popularity over the years. Both Eaton and GM do not know where the name came from, and Eaton has made several unsuccessful attempts in the past to debunk the Gov-Lok name. An updated version of the old Eaton ADL design is still available from Eaton, now known as the "Eaton mLocker" mechanical differential lock.
1973