Abstract: A filter pad comprising a pad of non-woven fibrous material having a peripheral region in which opposing faces have been compressed together and fused so as to form an outwardly-extending peripheral lip.

Abstract: A filter comprising a pad of non-woven fibrous material, the pad having a substantially solid edge of consolidated pad material which has been softened and subsequently hardened.

Abstract: A filter comprises first and second housing components (1, 3) slidable relative to each other and defining a filter chamber within the housing components. An inlet (7) for a fluid to be filtered is provided in at least one of the first and second housing components, and a filter element (11, 13) is provided within the filter chamber. The filter element is adapted to provide a space (15) between the inlet and the filter element for the accumulation of solid material in the fluid to be filtered, whereby sliding movement between the first and second housing components causes the volume of the filter chamber to vary.

Abstract: A filter comprises a pad (1) of non-woven fibrous material, and a pattern (3) of reinforced fibres formed in a surface region of the pad by bonding together adjacent fibres. The filter is manufactured by providing a pad (1) of non-woven fibrous material, and bonding together adjacent fibres to create a pattern (3) of reinforced fibres in a surface region of the pad.

Abstract: A filter comprises a pad (1) of non-woven fibrous material, the pad having a substantially solid edge (13) of consolidated pad material which has been softened and subsequently hardened. The filter can be manufactured by providing a pad (1) of non-woven fibrous material, treating a peripheral region of the pad so as to form around the pad an edge of consolidated material (13) which has been softened, and subsequently allowing the edge of consolidated material to harden.

Abstract: A filter pad comprises a pad (1) of non-woven fibrous material having a peripheral region in which opposing faces have been compressed together and fused so as to form an outwardly-extending peripheral lip (5). The filter pad is manufactured by providing a pad (1) of non-woven fibrous material, and compressing and heating a peripheral region of the pad so as to fuse the material of the pad and to form an outwardly extending peripheral lip (5).