Patent ID: 6600124
Filing Date: 2003-07-29
Classification: H01H

Abstract:
A mechanism to ensure that a first switch does not switch to a first position unless a second switch is in a second position, and that the second switch does not switch from the second position while the first switch is in the first position, the mechanism comprising:a moveable body with a notch structured and arranged to associate a position of the moveable body with a switching of the position of the second switch, wherein the associated position of the moveable body locates the notch in an engagement position when the second switch is in a second position and locates the notch out of the engagement position when the second switch is not in the second position; a moveable rod structured and arranged to engage the notch of the moveable body when a first switch is in a first position and to disengage the notch of the moveable body when the first switch is switched from the first position, wherein, when the moveable rod engages the notch of the moveable body, the moveable rod blocks movement of the moveable body in a first direction to prevent the second switch from switching from the second position, and when the notch of the moveable body is not in the engagement position so that the moveable rod cannot engage the notch, the first switch is prevented from switching to the first position.