Patent ID: 9670948
Date: 2017-06-06
CPC Classifications: B66F,E04H,F16B

Claim:
1. A latch assembly for a telescoping mast having a plurality of telescoping tube sections, the latch assembly comprising: a first latch member mounted to an associated first tube section; a second latch member mounted to an associated second tube section and configured to selectively engage the first latch member to interlock the first and second associated tubes when the associated first tube section is at least partially extended from the associated second tube section; and a trigger member mounted to an associated third tube section; wherein the second latch member includes: wherein the lock member is movable from the unlocked position to the locked position by the first latch member when the first associated tube section is extended out of the second associated tube section to thereby interlock the first associated tube section with the second associated tube section, the lock member movable from the locked position to the unlocked position by the first latch member when the first associated tube section is retracted into the second associated tube section; wherein the nest lock bar is biased towards the engaged position and movable to the engaged position by the trigger post upon extension of the second associated tube section out of the third associated tube section, the nest lock bar configured to restrict movement of the lock member from the locked position when in the engaged position; and wherein upon retraction of the associated second tube section into the associated third tube section, the nest lock bar is movable to the disengaged position by the trigger post thereby permitting the lock member to move to the unlocked position as the associated first tube is retracted into the associated second tube section.