Patent ID: 7048312

Claim:
A safety locking mechanism in a walk-in cooking chamber having a door opening closed by a door, comprising: a door locking bolt mounted to the cooking chamber door and with a connected operating lever exterior of the cooking chamber, said door locking bolt having an engagement surface, and said operating lever moving the bolt from a locking position to an unlocked position; a sliding bolt having an engagement surface engageable with the engagement surface of the locking bolt and mounted at the door opening adjacent to the door locking bolt when the door is closed, said sliding bolt and the locking bolt having corresponding camming surfaces so that moving the door to the closed position causes the locking bolt camming surface to strike the sliding bolt camming surface to cause the sliding bolt to move to allow movement of the sliding bolt past the locking bolt; and, a triggering mechanism located at least partially inside the cooking chamber which can be actuated by a person in an interior of the cooking chamber and by which the sliding bolt can be moved from an engaging position to an unlocked position where the engagement surface of the sliding bolt cannot engage with the engagement surface of the door locking bolt independently of whether the door locking bolt is in the locking position or in the unlocked position, wherein the triggering mechanism connects to the sliding bolt through at least a part of a wall of the cooking chamber by a shaft of the triggering mechanism conducted at least partly through the chamber wall and, wherein the shaft of the triggering mechanism has a lever element engaging the sliding bolt so that rotation of said shaft moves the sliding bolt to a retracted position from a locked position.