Interlock device

Interlock device for an enclosure having an opening and a closure having a closed position extending over the opening and an open position allowing access through the opening, comprising, in combination:

• a latch rotatable about an axis between a first position and a second position;
• means for selectively preventing rotation of the latch and having a latch position and an unlatch position, with the selectively preventing means in the unlatch position allowing rotation of the latch and the selectively preventing means in the latch position preventing rotation of the latch from its second position to its first position;
• means for biasing the selectively preventing means from the unlatch position to the latch position;
• and a cam surface for abutting with the selectively preventing means in the latch position with the cam surface moving the selectively preventing means from the latch position to the unlatch position as the latch moves from the first position towards the second position and allowing the selectively preventing means to move to the latch position under the bias of the biasing means when the latch reaches the second position.

Interlock device for an enclosure having an opening and a closure having a closed position extending over the opening and an open position allowing access through the opening, comprising, in combination:

• a latch rotatable about an axis between a first position and a second position;
• means for selectively preventing rotation of the latch and having a latch position and an unlatch position, with the selectively preventing means in the unlatch position allowing rotation of the latch and the selectively preventing means in the latch position preventing rotation of the latch from its second position to its first position;
• means for catching the latch in the first position when the closure is in the closed position;
• and means for moving the selectively preventing means from the latch position to the unlatch position when the closure is in the closed position;
• wherein the latch includes an arcuate arm spaced from and concentric to the axis;
• and wherein the catching means includes an aperture, with the arcuate arm extending through the aperture in the first position and the arcuate arm being spaced from the aperture in the second position.