Patent ID: 7174804

Claim:
A positive lock mechanism assembly, comprising: a compression spring rod assembly comprising a housing having a longitudinal axis and axially opposite ends; a rod member coaxial with said longitudinal axis and having an inner end in said housing and an outer end axially outwardly of one of said opposite ends; said rod member comprises at least one slot between said inner and outer ends thereof; a guide member on said inner end of said rod member for supporting said rod member during movement of said rod member; a pair of compression springs extending between said guide member and one of said opposite ends of said housing; and a pin having a first portion which is selectively inserted into said at least one slot for preventing movement of said rod member in a longitudinal direction, said pin extending within an opening in a housing member mounted adjacent one of said opposite ends of said housing, said pin having a second portion surrounded by a spring for biasing said pin in a locking position.