Field water purification system filter
First Claim
1. A flat water filter including:
- a water tight enclosure formed by two layers of a polymeric material;
a filter inlet fluidly coupled to the water-tight enclosure;
a filter outlet fluidly coupled to the water-tight enclosure;
a filter envelope including a quantity of filter media, the filter envelope being disposed within the water-tight enclosure, the flat water filter having a minimal thickness when not filled with water, the filter envelope being formed by a first plurality bonded segments of the two layers of polymeric material; and
an outer channel having a first side formed by the water-tight enclosure and a second side opposite from the first side, the second side including a second plurality of bonded segments of the two layers of polymeric material interspersed with a plurality of nonbonded segments of the two layers of polymeric material, the nonbonded segments defining a plurality of openings in an intermittent barrier between the outer channel and the filter media.
1 Assignment
0 Petitions
Accused Products
Abstract
A field water purification system filter is described. The filter includes a water tight enclosure formed between two layers of a polymeric material, an inlet and an outlet are coupled to the water tight enclosure. A filter envelope including a quantity of filter media is inside the water tight enclosure. The water filter having a minimal thickness when not filled with water. The filter envelope is formed by a first set of bonded segments of the two layers of polymeric material. The filter can also include an outer channel having a first side formed by the water tight enclosure and a second side opposite from the first side. The second side can include a second set of bonded segments of the two layers of polymeric material interspersed with a set of nonbonded segments, the nonbonded segments defining openings in an intermittent barrier between the outer channel and the filter media.
-
Citations
20 Claims
-
1. A flat water filter including:
-
a water tight enclosure formed by two layers of a polymeric material; a filter inlet fluidly coupled to the water-tight enclosure; a filter outlet fluidly coupled to the water-tight enclosure; a filter envelope including a quantity of filter media, the filter envelope being disposed within the water-tight enclosure, the flat water filter having a minimal thickness when not filled with water, the filter envelope being formed by a first plurality bonded segments of the two layers of polymeric material; and an outer channel having a first side formed by the water-tight enclosure and a second side opposite from the first side, the second side including a second plurality of bonded segments of the two layers of polymeric material interspersed with a plurality of nonbonded segments of the two layers of polymeric material, the nonbonded segments defining a plurality of openings in an intermittent barrier between the outer channel and the filter media. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A flat filter including:
-
a liquid-tight enclosure formed by a first layer of a polymeric material and a second layer of a polymeric material; and a filter envelope including a quantity of filter media, the filter envelope being disposed within the liquid-tight enclosure, the filter envelope being formed by a plurality bonded segments of the first and second layers of polymeric material, the plurality bonded segments of the first and second layers of polymeric material forming a serpentine flow path, the quantity of filter media being disposed within at least a portion of the serpentine flow path, the serpentine flow path having an inlet end fluidly coupled to a filter inlet and the serpentine flow path having an outlet end opposite from the inlet end, the outlet end fluidly coupled to a filter outlet. - View Dependent Claims (19)
-
-
20. A flat filter including:
-
a liquid-tight enclosure formed by at least three layers of a polymeric material; a filter envelope including a quantity of filter media, the filter envelope being disposed within the liquid-tight enclosure, the flat liquid filter having a minimal thickness when not filled with liquid, the filter envelope being formed by a first plurality bonded segments of at least two of the at least three layers of polymeric material; and an outer channel having a first side formed by the liquid-tight enclosure and a second side opposite from the first side, the second side including a second plurality of bonded segments of at least two of the at least three layers of polymeric material interspersed with a plurality of nonbonded segments of at least two of the at least three layers of polymeric material, the nonbonded segments defining a plurality of openings in an intermittent barrier between the outer channel and the filter media, the outer channel having an inlet end fluidly coupled to a filter inlet; and a filter outlet fluidly coupled to the liquid-tight enclosure substantially opposite from the outer channel.
-
Specification