Liquid purification or separation – Plural distinct separators – Filters
Patent
1976-06-21
1978-08-01
Lutter, Frank W.
Liquid purification or separation
Plural distinct separators
Filters
210344, 210365, 210380R, 210391, 210411, 55502, 277 3, 277 23, 277 27, 277 73, B01D 3328
Patent
active
041041690
ABSTRACT:
A filter has a housing defining a closed chamber around a hollow shaft which is rotatable in the housing and which carries a plurality of filter elements so that fluid can be pumped through the filter elements into the hollow interior of the shaft. The shaft is rotatable with the filter elements relative to the housing for cleaning filter cake off the filter elements between filtering operations. An annular and hollow bellows-type seal surrounds the shaft and has one axial end secured to the housing and an opposite axial end engageable with the shaft for sealing the shaft relative to the housing. This bellows-type seal is made of thin and flexible stainless steel. The inside of the seal may be pressurized by a liquid or gas to force the end of the seal against the shaft and form a tight connection therebetween.
REFERENCES:
patent: 1425979 (1922-08-01), Kingsbury
patent: 2894635 (1959-07-01), Irthum et al.
patent: 3190449 (1965-06-01), Muller
patent: 3399778 (1968-09-01), O'Neill
patent: 3443695 (1969-05-01), O'Neill
patent: 3608731 (1971-09-01), Seggebruch
Guazzone Bruno
Muller Hans
Lacey David L.
Lutter Frank W.
Muller Hans
Striker Michael J.
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