| 摘要 |
A hitch/linkage pin 1 has a locking bar 2 rotatable between a first position aligned with a longitudinal axis of the pin 1 and a second position perpendicular to the longitudinal axis. Spring means 5 engage with upstanding projections 6 on the locking bar 2 and act to hold the locking bar 2 in one of the first or second positions unless the locking bar 2 is moved manually. |
