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US 10,798,965 B2Granted
Multi-stage filtration device
AssigneeBanana Bros, LLC
InventorsDavid Richmond, Howard Richmond
Life of this patent
Estimating the term…
Abstract
A filter device including a Bernoulli element is provided. The filter device includes a housing, a plurality of permeable membranes positioned in association with the housing to create a plurality of chambers in the housing, and a Bernoulli element positioned within one chamber, wherein the Bernoulli element causes airflow and pressure to vary within the one chamber when fluid comprising smoke is drawn into the filter device.
Claims20
A filter device, comprising:
- a housing;
- a plurality of permeable membranes positioned in association with the housing to create a plurality of chambers in the housing;
- and
- a Bernoulli element fixedly mounted within one chamber, the Bernoulli element being of unitary construction employing a single material, having a noncircular cross section, and having a curved surface facing one permeable membrane of the one chamber, wherein the Bernoulli element causes airflow and pressure to vary within the one chamber by flowing around an exterior of the Bernoulli element when fluid comprising smoke is drawn into the filter device;
- wherein the Bernoulli element is centrally fixedly mounted within the one chamber and has an upper edge separated from an upper internal chamber wall by a nonzero distance and a lower edge separated from a lower internal chamber wall by a further nonzero distance and forward and rear edges separated from permeable membranes by still further nonzero distances.
2 more elements
A filter device usable to filter a fluid comprising smoke drawn toward a user, comprising:
- a forward chamber formed within a housing and positioned away from the user and formed by a first plurality of permeable membranes, the forward chamber comprising a Bernoulli element centrally fixedly mounted within the forward chamber, the Bernoulli element being of unitary construction, having a noncircular cross section, employing a single material and having a curved surface facing one permeable membrane of the forward chamber, the Bernoulli element having an upper edge separated from an upper forward chamber wall by a nonzero distance and a lower edge separated from a lower forward chamber wall by a further nonzero distance and forward and rear edges separated from the first plurality of permeable membranes by still further nonzero distances;
- and
- a rearward chamber formed within the housing and positioned toward the user and formed by at least one further permeable membrane;
- wherein the Bernoulli element causes airflow and pressure to vary within the forward chamber by flowing around an exterior of the Bernoulli element when the fluid comprising smoke is drawn into the filter device.
1 more element
A method for filtering impurities from a fluid comprising smoke, comprising:
- initially drawing fluid comprising smoke into a forward end of a multichamber housing, the multichamber housing comprising a forward chamber and a rearward chamber separated by a permeable membrane, the forward chamber comprising a Bernoulli element centrally fixedly mounted within the forward chamber, the Bernoulli element being of unitary construction, having a noncircular cross section, employing a single material, and having a curved surface facing one permeable membrane of the forward chamber and having an upper edge separated from an upper forward chamber wall by a nonzero distance, a lower edge separated from a lower forward chamber wall by a further nonzero distance, and a forward edge separated from the permeable membrane by a still further nonzero distance;
- and
- subsequently drawing the fluid comprising smoke over an exterior of the Bernoulli element in the forward chamber such that fluid flow and pressure vary in the forward chamber, thereby filtering out particles from the fluid comprising smoke.
Dependencies are inferred from the claim text.