Water filter system

Patent metadata

Field	Value
Publication number	US-11291937-B2
Application number	US-202117509856-A
Country	US
Kind code	B2
Filing date	Oct 25, 2021
Priority date	Sep 15, 2011
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A filter unit includes a body portion and an engagement protrusion that extends from the body portion with a first water containment seal. At least one cross-section of the engagement protrusion at a location of the first water containment seal, taken perpendicular to a central longitudinal axis of the body portion, includes an egg-shaped outer perimeter with a single axis of symmetry. At least one engagement surface traverses around at least part of the body portion. The at least one engagement surface has a linear movement section for linear movement of the body portion. The linear movement section transitions to a rotational movement section for rotational movement of the body portion. The rotational movement section is angled relative to the linear movement section. A water inlet path and a water outlet path extend through a portion of the engagement protrusion defined by the at least one cross-section.

First claim

What is claimed is:

1. A filter unit comprising:
a body portion;
an engagement protrusion extending from the body portion and comprising a first water containment seal, wherein at least one cross-section of the engagement protrusion at a location of the first water containment seal, taken perpendicular to a central longitudinal axis of the body portion, includes an egg-shaped outer perimeter having a single axis of symmetry;
at least one engagement surface traversing around at least part of the body portion, the at least one engagement surface having a linear movement section for linear movement of the body portion, wherein the linear movement section transitions to a rotational movement section for rotational movement of the body portion, wherein the rotational movement section is angled relative to the linear movement section; and
a water inlet path and a water outlet path extending through a portion of the engagement protrusion defined by the at least one cross-section.

2. The filter unit of claim 1 , further comprising:
a second water containment seal disposed about the engagement protrusion and spaced apart from the first water containment seal.

3. The filter unit of claim 2 , wherein the first and second water containment seals are disposed on a sidewall of the engagement protrusion.

4. The filter unit of claim 1 , wherein the at least one engagement surface is recessed.

5. The filter unit of claim 1 , wherein the at least one engagement surface further comprises a transition section between the linear movement section and the rotational movement section.

6. The filter unit of claim 5 , wherein the transition section is positioned at an angle with respect to the linear movement section and the rotational movement section.

7. The filter unit of claim 6 , wherein the at least one engagement surface is recessed.

Assignees

• Whirlpool Co

Inventors

• Kruckenberg Christopher A
• Morrison John W
• Spindler Jeffrey A

Classifications

• B01D35/30 Primary

  Filter housing constructions · CPC title

• C02F2307/10

  as part of a potable water dispenser, e.g. for use in homes or offices · CPC title

• B01D2201/302

  having inlet or outlet ports · CPC title

• C02F2307/12

  as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners · CPC title

• B01D2201/4046

  Means for avoiding false mounting of different parts · CPC title