US Patent 11220013 Folding knife blade engagement lock

A folding knife with an improved locking mechanism for a blade pivoting from a closed position to a secure open locked position. A spring urged release locking arm is slidably disposed within the knife handle by guide pins. A locking arm projection is engaged on a blade shank retainment locking pin allowing selective repositioning of the locking pin during operation releasing the blade from closed retained position to fully open and extended lock position upon locking arm movement.