Abstract: A cleaning implement is provided for cleaning surfaces with a cleaning substrate. The cleaning implement includes a handle connected via a universal joint to a mop head. The mop head includes a bumper pad, which is made of a deformable and nonabsorbent material. The bumper pad can be deformed in the Z direction and within the X-Y plane. The cleaning implement can also include a motor for causing a portion of the mop head to move relative to the handle.

Abstract: A bearing for a gear pump including a bearing dam which has a surface, an inlet face relief located on the bearing dam, and a discharge face relief located on the bearing dam. A bearing dam wall is located between the inlet face relief and the discharge face relief and a bleed hole arrangement. The bleed hole arrangement includes a blind passage located on the discharge face relief, and a second passage positioned perpendicular to and connected to the blind passage. The second passage extends to the surface of the bearing dam. In an alternative embodiment, the second passage is of a stepped configuration. The bleed hole arrangement reduces cavitation on the bearing and gear surfaces by pulsing fuel into an inter-tooth volume formed between the gear teeth during gear rotation.