Water filter system

摘要

A water filter system includes a removable filter unit having a body portion including a proximal end and a distal end. The proximal end is adapted to be inserted into a filter head assembly. A laterally extending key member is disposed on the body portion and adapted to engage a key slot in the filter head assembly. 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 includes a second radius of curvature that is larger than the first radius of curvature.

主权项

1. A water filter system comprising:
a filter unit with a body portion adapted for engagement with a filter head assembly; an engagement protrusion extending from the body portion, wherein the engagement protrusion has a cross-section with only one axis of symmetry; a side aperture disposed on the engagement protrusion; an end aperture disposed on the engagement protrusion; a curved engagement surface disposed on the engagement protrusion proximate the end aperture; and at least one seal disposed on the engagement protrusion, wherein a cross-section taken perpendicular to the longitudinal extent of the engagement protrusion, taken at the seal, has only one axis of symmetry.