Drain filter for a dishwashing machine

Details Drain filter for a dishwashing machine Drain filter for a dishwashing machine

1976-10-06

1978-04-25

Granger, Theodore A.

Cleaning and liquid contact with solids

Apparatus

With means for collecting escaping material

210167, B08B 302

Patent

active

040857611

ABSTRACT:
The drain filter has large inlet openings at a raised position and small inlet openings at its bottom, all shaped to cooperate with the dishwashing machine sump to form labyrinthine drainage passageways to stop debris exceeding an acceptable size. The drain filter is in two parts, a fixed portion and a removable portion, both of which provide these features. The large inlet openings into the removable portion of the drain filter are upwardly facing and on the downstream side of an elevated wall which forms a dam to stop dense objects from entering the filter. The total filter inlet area is small to maintain a high flow velocity to float softer and lighter items over the dam for removal from the dishwasher when it is drained. The small inlet openings drain the remaining fluid after the level falls below the large openings.

REFERENCES:
patent: 1593550 (1926-07-01), Holt
patent: 1761257 (1930-06-01), Fleming
patent: 2283365 (1942-05-01), Heinkel
patent: 2666493 (1954-01-01), Gordon
patent: 3090391 (1963-05-01), Kaldenberg et al.
patent: 3357561 (1967-12-01), Schmid et al.
patent: 3378858 (1968-04-01), Jacuzzi
patent: 3469698 (1969-09-01), Blendermann
patent: 3529723 (1970-09-01), Hagedorn

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