Knife with folding blade for operation by one hand has swivel joint and stop for blade and sliding link with actuating button which can lock against end stop in blade open and blade closed position

摘要

The knife blade (1) swivels (5) on a handle (2). A stop (10) prevents the blade swinging past the fully open position. A rod (3) is hinged (11) to the blade at one end, and its other end engages an end stop (9) to stop the blade swinging toward its closed position. A pin or small roller (8) near the stop end can move in an arcuate guide slot (4). The rod is spring-loaded (7) upward toward the end stop. An actuator button (6) near the middle of the lever can be used to push the lever downward, moving the end of the lever away from the stop and allowing the blade to fold.