Pump-filter assembly

Details Pump-filter assembly Pump-filter assembly

1977-07-18

1978-05-30

Adee, John

Liquid purification or separation

Structural installation

Flume stream type

210315, 210333R, 210416R, B01D 2938

Patent

active

040922480

ABSTRACT:
A pump-filter assembly for a recirculating toilet comprising, an axial flow pump including a support tube and a drive shaft supported therein, means for rotating the drive shaft in first and second opposite directions, a first impeller secured to the drive shaft, the impeller being selectively configured to pump when the drive shaft is rotated in the first direction and to forcefully draw in air when the drive shaft is rotated in the second direction, the drive shaft extending below the support tube, a second impeller supported on the drive shaft at a location below the support tube for free-wheeling rotation thereon, a ratchet mechanism secured to the portion of the drive shaft extending below the support tube, and a pawl mechanism secured to the second impeller means for selective driving engagement with the ratchet mechanism when the drive shaft is driven in the opposite second direction, and filter means surrounding the axial flow pump.

REFERENCES:
patent: 3067433 (1962-12-01), Dietz et al.
patent: 3342341 (1967-09-01), Lee
patent: 3429445 (1969-02-01), Lee
patent: 3473171 (1969-10-01), Palmer
patent: 3855641 (1974-12-01), Foster et al.

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