Patent ID: 9625796
Date: 2017-04-18
CPC Classifications: G03B,Y10T

Claim:
1. An apparatus comprising: a locking pin; a pin retaining device, the locking pin slidable therein, comprising: a starting pin position; a pin locking mechanism; a partial pin locking mechanism; a pin path from the starting pin position to the pin locking mechanism, the partial pin locking mechanism located on the pin path and configured to prevent the locking pin from sliding back towards the starting pin position and allowing the locking pin to slide towards the pin locking mechanism, the pin locking mechanism configured to lock the locking pin therein; and a return pin path from the pin locking mechanism to the starting position, the return pin path bypassing the partial pin locking mechanism, the partial pin locking mechanism comprises a step in the pin path, the step being parallel to the pin locking mechanism so that as the locking pin slides along the pin path, the biasing device biases the locking pin towards the step, the step preventing the locking pin from sliding back towards the starting pin position once the locking pin slides past the step; and, a biasing device configured to relatively bias the locking pin along at least a portion of the pin path towards the pin locking mechanism, and further bias the locking pin into the pin locking mechanism.