Patent ID: 7669901

Claim:
A door safety latch for latching a door of an air cleaner, the door safety latch comprising: a latch arm pivotally mounted between a latch position and an unlatch position, the latch arm including a latch projection adapted to engage the door; a slider that is slidable and includes a slide arm for moving the latch arm toward the unlatch position; and a release button that is slidably movable and includes an operating surface at one end and a stop shoulder projecting from an end opposed to the operating surface, the release button being biased to a normally extended position with the stop shoulder positioned on the moving path of the slider to block movement of the slider and the latch arm to the second, unlatched position; wherein the door safety latch is configured to receive a button depression on the operating surface of the release button, to move the stop shoulder out of a slide path of a slider of the door safety latch, and subsequently to receive a slide actuation force in the slider, with the slider pivoting the latch arm in order to release the engagement of the latch projection with the door of the air cleaner.