| 主权项 |
1. A float device for use in drawing liquids from a tank or other reservoir, said device comprising:
an elongate tubular member arranged to extend along a vertical direction within the tank; a unitary member arranged for rising and falling with the level of liquid in the tank, wherein said unitary member comprises a float chamber and a hollow chamber, said hollow chamber defined by at least one wall, at least a portion of said wall having a plurality of apertures for filtering liquid that is drawn into said hollow chamber; and a liquid pick-up duct which comprises a flexible tube having its free end coupled to said hollow chamber, said flexible tube for drawing filtered fluid from said hollow chamber; wherein said unitary member is arranged for movement along the vertical direction within said elongate tubular member; and wherein said elongate tubular member comprises an open lower end, and said unitary member has a configuration wherein a number of the apertures of said wall of said hollow chamber extend below said elongate tubular member when the level of liquid in the tank is low. |
