Abstract: A door safety latch for air cleaner is provided. The door safety latch includes a latch arm including a latch projection, with the latch arm configured to pivot with respect to a door of the air cleaner, and a slider that traps a portion of the latch arm. The slider is configured to hold the latch arm in a first, latched position and further configured to pivot the latch arm to a second, unlatched position. The door safety latch further includes a release button that includes a stop shoulder. The release button is biased to a normally extended position with the stop shoulder blocking movement of the slider and the latch arm to the second, unlatched position.

Abstract: A vacuum cleaner according to an embodiment of the invention includes a chassis, a fan unit including a blower housing mounted to the chassis and an inlet housing affixed to the blower housing, and a baseplate affixed to the chassis. An access aperture is formed in the baseplate. The access aperture extends at least partially over the fan unit. A door can be included in the baseplate. A bearing washer is positioned between the blower housing and the inlet housing and provides a substantially air-tight seal between the blower housing and the inlet housing. The inlet housing includes a bearing face, an inlet conduit portion, a slide flange, and a slide block. The slide block slides into and engages the slide flange and further slides into and engages the chassis of the vacuum cleaner.

Abstract: A door safety latch for air cleaner is provided according to an embodiment of the invention. The door safety latch includes a latch arm including a latch projection, with the latch arm configured to pivot with respect to a door of the air cleaner, and a slider that traps a portion of the latch arm. The slider is configured to hold the latch arm in a first, latched position and further configured to pivot the latch arm to a second, unlatched position. The door safety latch further includes a release button that includes a stop shoulder. The release button is biased to a normally extended position with the stop shoulder blocking movement of the slider and the latch arm to the second, unlatched position.

Abstract: A vacuum cleaner according to an embodiment of the invention includes a chassis, a fan unit including a blower housing mounted to the chassis and an inlet housing affixed to the blower housing, and a baseplate affixed to the chassis. An access aperture is formed in the baseplate. The access aperture extends at least partially over the fan unit. A door can be included in the baseplate. A bearing washer is positioned between the blower housing and the inlet housing and provides a substantially air-tight seal between the blower housing and the inlet housing. The inlet housing includes a bearing face, an inlet conduit portion, a slide flange, and a slide block. The slide block slides into and engages the slide flange and further slides into and engages the chassis of the vacuum cleaner.