Filter unit
DCFirst Claim
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1. A unit for engagement with a water filter system comprising:
- an engagement protrusion extending from a proximal body portion, wherein the engagement protrusion is configured for selective rotational engagement in a complementary receiver in a filter head assembly, wherein the selective rotational engagement of the engagement protrusion with the complementary receiver places the filter head assembly in selective communication with an interior of the proximal body portion;
at least one engagement surface traversing around at least part of the proximal body portion at an angle, the at least one engagement surface configured to cooperate with the complementary receiver in the filter head assembly to define the selective rotational engagement; and
at least one seal member disposed on a sidewall of the engagement protrusion, wherein a cross section of the at least one seal member taken at an angle perpendicular to a longitudinal axis of the engagement protrusion and through the sidewall at the at least one seal member includes only one axis of symmetry.
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Abstract
A filter unit includes a body portion having a proximal end and a distal end. An engagement protrusion extends from the proximal end. The engagement protrusion includes a first portion that has a first radius of curvature and a second portion opposing the first portion that has a second radius of curvature that is larger than the first radius of curvature. A protruding retention surface is disposed on and extends radially outward from the body portion. The protruding retention surface is adapted to secure the filter unit in a filter head assembly.
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Citations
7 Claims
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1. A unit for engagement with a water filter system comprising:
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an engagement protrusion extending from a proximal body portion, wherein the engagement protrusion is configured for selective rotational engagement in a complementary receiver in a filter head assembly, wherein the selective rotational engagement of the engagement protrusion with the complementary receiver places the filter head assembly in selective communication with an interior of the proximal body portion; at least one engagement surface traversing around at least part of the proximal body portion at an angle, the at least one engagement surface configured to cooperate with the complementary receiver in the filter head assembly to define the selective rotational engagement; and at least one seal member disposed on a sidewall of the engagement protrusion, wherein a cross section of the at least one seal member taken at an angle perpendicular to a longitudinal axis of the engagement protrusion and through the sidewall at the at least one seal member includes only one axis of symmetry. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification