Patent ID: 7040673
Filing Date: 2006-05-09
Classification: F24C,Y10S,Y10T

Abstract:
1. An oven door lock mechanism for use with an oven having a door and a frame configured so that the door is adjacent the frame when the door is closed, the lock mechanism comprising: a latch supported above and coupled to the frame to rotate about a pivot axis and rotatable between an unlatched and latched position, the latch including a follower surface offset from the pivot axis, a blockable arm having a blocked member offset from the pivot axis, and a latching member extending beyond the frame for interacting with the door; an actuator pin movably supported by the frame, the actuator pin having an outer end extending beyond the frame for engaging the oven door upon closure and a cam end engaging the follower surface of the latch for rotating the latch into the latched position wherein the door is adapted to be captured by the latch; a motor driving a shaft when actuated; a cam having three lobes and each two lobes defining a void therebetween, the cam being mounted to the shaft for rotation thereabout and the blockable member being disposed at least partially between a void between two lobes of the cam when the latch is in the unlatched position, the cam being rotatable between a non-blocked position wherein rotation of the latch is not inhibited by the cam and a blocked position wherein the cam blocks movement of the latch from the latched position to the unlatched position and wherein movement of the cam between the non-blocked position and the blocked position is accomplished by rotation of the cam by about 60 degrees; a cam actuated switch, rotation of the cam between the non-blocked position and the blocked position resulting in actuation of the cam actuated switch; and a switch controlling a motor driving circuit and movement of the latch between the unlatched and latched positions induces a change in the state of the switch from a state in which the motor driver circuit is disabled to a state in which the motor driver circuit is enabled.