Water injector system and method for using same

• US 5,251,939 A
• Filed: 07/19/1991
• Issued: 10/12/1993
• Est. Priority Date: 07/19/1991
• Status: Expired due to Term

• Current Assignee: Anvil Technologies LLC
• Original Assignee: Maytag Corporation (Whirlpool Corporation)
• Inventors: Jordan, Lawrence J.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US07/732,809
• Time in Patent Office: 816 Days
• Field of Search: 285/158, 285/205, 285/209, 285/211, 285/82, 285/153, 285/154, 285/243, 285/242, 285/24, 285/27, 285/376, 285/360, 285/361, 137/216
• US Class Current: 285/24
• CPC Class Codes: A47L 15/4217 Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
• CPC Class Codes: F16L 37/252 the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
• CPC Class Codes: F16L 41/08 Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe F16L41/02 takes precedence

Abstract

A water injector system is provided for inter-connecting a water hose to a fill opening in the wall of a dishwasher tub. The injector includes an elongated body having a water ingress opening at the upper end and a water egress opening at the bottom end. A coupler having a plurality of lugs is provided at the lower end of the body and is adapted to cooperate with notches surrounding the fill opening of the dishwasher tub for connecting the injector to the tub and for holding the egress opening in communication with the fill opening of the tub. A ferrule is integrally provided on the upper end of the body for connection to a water hose to provide fluid communication from the hose through the injector into the fill opening of the water tub.

Claims

1. A water injector for interconnecting a water inlet hose to a fill opening in a wall of a dishwasher tub, said wall having an interior surface and an exterior surface;

said water injector comprising;

an elongated hollow body member having first and second ends and forming an elongated chamber therein, said body member having a water ingress opening and a water egress opening adjacent said first and second ends respectively, and providing communication from outside said body member to said elongated chamber;

coupling means integral with said body member adjacent said egress opening for coupling said body member to said exterior surface of said tub wall with said egress opening in fluid communication with said fill opening in said tub wall;

conduit means having a hinged portion integrally formed with said body member and being sized to be connected to said water inlet hose, said conduit means being movable about said hinged portion into communication with said ingress opening of said body member for conducting water from said water inlet hose into said elongated chamber of said body member.

3. A water injector according to claim 1 or 2 wherein said body member includes a door opening adjacent said first end thereof, said movable portion of the conduit means including a door being integrally formed with said body member and being hinged thereto for hinged movement about a hinge axis from a closed position in covering relation over said door opening to an open position out of covering relation with said door opening, said water ingress opening and said conduit means extending through said door.

4. A water injector according to claim 3 wherein said body member includes movable latch means for detachably retentively engaging said door and holding said door in said closed position.

5. A water injector according to claims 1 or 2 wherein said body member includes vacuum breaker means for preventing back siphoning of water from said elongated chamber into said water hose.

6. A water injector according to claim 5 wherein said vacuum breaker means comprises at least one vent opening in said body member adjacent said ingress opening.

7. A water injector according to claim 6 wherein said body member includes a shield member in covering relation over said vent opening, said shield member being positioned to permit air communication from within said elongated chamber through said vent opening to the atmosphere.

2. A water injector for interconnecting a water inlet hose to a fill opening in a wall of a dishwasher tub, said wall having an interior surface and an exterior surface;

said water injector comprising;

an elongated hollow body member having first and second ends and forming an elongated chamber therein, said body member having a water ingress opening and a water egress opening adjacent said first and second ends respectively, and providing communication from outside said body member to said elongated chamber;

coupling means integral with said body member adjacent said egress opening for coupling said body member to said exterior surface of said tub wall with said egress opening in fluid communication with said fill opening in said tub wall;

conduit means integrally formed with said body member and having a movable portion positioned adjacent said ingress opening, said conduit means being sized to be connected to said water inlet hose, said conduit means being movable relative to said body member into fluid communication with said ingress opening of said body member for directing water from said water inlet hose into said elongated chamber of said body member;

said coupling means comprising a cylindrical shank surrounding said egress opening and sized to matingly fit within said fill opening of said tub, and a sealing flange surrounding said cylindrical shank and positioned to be sealed with said exterior surface of said tub wall whenever said cylindrical shank is within said fill opening;

said body member, said coupling means, and said conduit means being formed of plastic material molded into a single integral unit.

8. A water injector according to claim 2 wherein said body member includes a door opening adjacent said first end thereof, said movable portion of said conduit means being a door movable from a closed position in covering relation over said door opening to an open position out of covering relation over said door opening, said water ingress opening and said conduit means extending through said door.

9. A water injector according to claim 2 wherein said movable portion of said conduit means comprises a hinged portion on the conduit means for movably connecting said conduit means to said body member for hinged movement between a first position wherein said conduit means is out of communication with said ingress opening of said body member to a second position wherein said conduit means is in communication with said ingress opening of said body member.

10. A water injector for interconnecting a water inlet hose to a fill opening in a wall of a dishwasher tub, said wall having an interior surface and an exterior surface;

said water injector comprising;

an elongated hollow body member having first and second ends and forming an elongated chamber therein, said body member having a water ingress opening and a water egress opening adjacent said first and second ends respectively, and providing communication from outside said body member to said elongated chamber;

coupling means integral with said body member adjacent said egress opening for coupling said body member to said exterior surface of said tub wall with said egress opening in fluid communication with said fill opening in said tub wall;

conduit means integrally formed with said body member and having a movable portion positioned adjacent said ingress opening, said conduit means being sized to be connected to said water inlet hose, said conduit means being movable into general alignment with said ingress opening of said body member for directing water from said water inlet hose into said elongated chamber of said body member;

vacuum breaker means integral with said body member adjacent said ingress opening for preventing reverse siphoning of water from said elongated chamber through said conduit means;

said body member, said coupling means, said conduit means and said vacuum breaker means being formed from plastic material molded into a single integral unit.

11. A water injector according to claim 10 wherein said body member includes a door opening adjacent said first end thereof, said movable portion of the conduit means including a door being integrally formed with said body member and being hinged thereto for hinged movement about a hinge axis from a closed position in covering relation over said door opening to an open position out of covering relation with said door opening, said water ingress opening extending through said door and said conduit means being integrally formed therewith.

12. A water injector according to claim 11 wherein said body member includes movable latch means integral with said body member for detachably retentively engaging said door and holding said door in said closed position.

13. A water injector according to claim 10 wherein said vacuum breaker means comprises at least one vent opening in said body member adjacent said ingress opening.

14. A water injector according to claim 13 wherein said body member includes side walls adjacent said first end thereof, said vent opening extending through one of said side walls.

15. A water injector according to claim 14 wherein said body member includes shield means in spaced covering relation over said vent opening, said shield means being positioned to permit air communication from within said elongated chamber through said vent opening to the atmosphere.

18. A combination according to claim 15 wherein said body member is comprised of molded plastic.

19. A combination according to claim 18 wherein said tub wall is comprised of plastic.

16. In combination:

a water hose having a discharge end;

a dishwasher tub having at least one tub wall with a fill opening extending therethrough, said tub wall having an interior surface and an exterior surface;

an elongated hollow body member having first and second ends and forming an elongated hollow chamber therein, said body member having a water ingress opening and a water egress opening providing communication from outside said body member to said elongated chamber within said body member;

coupling means integral with said body member adjacent said egress opening and coupling said body member to said exterior surface of said tub wall with said egress opening in fluid communication with said fill opening in said tub wall, said coupling means permitting said body member to pivot with respect to said tub wall about an axis formed by said coupling means from an operable position to a removal position;

stop means on said exterior surface of said wall engaging said body member when said body member is in said operable position to hold said body member against movement from said operable to said removal position;

said body member being sufficiently flexible to permit said first end thereof to deflect away from said exterior surface of said tub wall and around said stop means so as to permit pivotal movement of said body member between said operable and removal positions;

conduit means integrally formed with said body and being connected to said discharge end of said water hose for receiving water therefrom, said conduit means being in fluid communication with said ingress opening of said body member for conducting water flow from said inlet hose to said elongated chamber of said body member.

17. A combination according to claim 16 wherein said stop member includes an abutment surface engaging a portion of said body member in said operable position to hold said body member against movement to said removal position.

20. A combination according to claim 17 wherein said stop member further includes a cam surface for engaging said body member and for causing said body member to cam outwardly away from said exterior surface of said tub wall and around said stop member when said body member is rotating from said removal position to said operable position.

21. A combination according to claim 16 wherein a plurality of positioning lugs extend outwardly from said exterior surface of said tub wall to facilitate aligning said coupling means in said removal position.

22. A combination according to claim 16 wherein said tub wall includes a first locking means adjacent said fill opening, said coupling means including a second locking means, said first and second locking means cooperating to couple said body member to said tub wall with said egress opening in fluid communication with said fill opening whenever said body member is in said operable position and said first and second locking means cooperating to permit removal of said egress opening from fluid communication with said fill opening whenever said body member is in said removal position.

23. A method for connecting a discharge end of a water hose to a fill opening in a tub wall of a dishwasher tub, said tub wall having an interior surface and an exterior surface and first locking means adjacent said fill opening, said method comprising:

taking an elongated hollow flexible body member having first and second ends and having an elongated hollow chamber therein, said body member having an ingress opening adjacent said first end and an egress opening adjacent said second end, and having conduit means in communication with said ingress and egress openings, said body member having coupling means adjacent said egress opening, said coupling means having a shank portion and second locking means;

inserting said shank portion of said coupling means axially into said fill opening of said tub wall while said coupling means is positioned in a first rotational orientation relative to said fill opening, whereby said first locking means and said second locking means cooperate to permit said shank portion to fit within said fill opening with said egress opening of said body member in fluid communication with said fill opening;

rotating said body member and said shank portion in unison so that said shank portion rotates within said fill opening from said first rotational orientation to a second rotational orientation wherein said first and second locking means cooperate to prevent removal of said shank portion axially from said fill opening and to hold said egress opening in sealed communication with said fill opening;

deflecting said body member outwardly away from exterior surface of said tub wall and around a stop member on said exterior surface of said wall during rotation of said body from said first rotational orientation to said second rotational orientation;

using said stop member to limit rotation of said body member from said second rotational orientation to said first rotational orientation when said body member is in said second rotational orientation;

connecting said water hose to said conduit means so as to provide fluid communication from said water hose to the interior of said elongated chamber.