Lock for a flip open knife, and mechanism for making same automatic

A knife, comprising:

• a handle defining a front pocket and a back side;
• a folding blade rotatably attached to the handle and rotatable between a first position where the blade is at least partially stored in the front pocket and a second, opened position where the blade is rotated out of the front pocket and an edge for the blade is exposed;
• and
• a strap lock mounted on the back side of the handle for locking the blade in the opened position, the strap lock being biased towards the handle;
• the blade comprising:
• a flipper that extends out of a back side of the handle when the blade is in the first position;
• a first surface for connecting to the strap lock when the knife is in the first position and biasing the knife into the first position;
• and
• a second surface for connecting to the strap lock when the knife is the opened position and locking the knife into the opened position.