Wash chamber for automated appendage-washing apparatus

• US 7,758,701 B2
• Filed: 12/09/2008
• Issued: 07/20/2010
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Meritech Systems, LLC
• Original Assignee: Resurgent Health & Medical LLC
• Inventors: Barnhill, Paul R., Johannsen, Thomas M.
• Primary Examiner(s): Barr; Michael
• Assistant Examiner(s): Chaudhry; Saeed T
• Application Number:
  US12/331,175
• Publication Number:
  US 20090084414A1
• Time in Patent Office: 588 Days
• Field of Search: 134/18, 134/32, 134/33, 134/34, 134/42
• US Class Current: 134/18
• CPC Class Codes: A47K 2210/00 Combinations of water taps, soap dispensers and hand dryers
• CPC Class Codes: A47K 7/04 Mechanical washing or cleaning devices, hand or mechanically, i.e. power operated
• CPC Class Codes: A61B 90/80 Implements for cleaning or washing the skin of surgeons or patients
• CPC Class Codes: A61H 2205/065 Hands
• CPC Class Codes: A61H 35/00 Baths for specific parts of the body electric circuits therefor A61H33/005; specific components therefor A61H33/60
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/4984 Retaining clearance for motion between assembled parts
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

A wash cylinder or chamber for an automated cleaning station to clean an object or a person'"'"'s body part includes nozzles on the interior of the cylinder, the nozzles of one embodiment comprising an increasing roll angle providing a novel spray pattern. Additionally, embodiments of the invention include fluid guidance and conveyance structures, angled nozzles, sealing structures, finger guards, nozzle ribs, wash chamber seating mechanisms and drains, and nozzle inlays having a plurality of nozzles. Also disclosed are methods of washing an object or body part using a wash cylinder or chamber and methods of assembling a wash cylinder or chamber.

Claims

1. A method of at least partially cleaning at least a portion of at least one object using an automated cleaning station, comprising:

initiating a flow of a first fluid through a fluid inlet disposed on a wash chamber of the automated cleaning station, the wash chamber including a first end and a second end, at least one of the first end and the second end connected to the automated cleaning station, the wash chamber including an axis of rotation, the wash chamber including an object receiving cavity, the object receiving cavity being accessible through an opening in the first end of the wash chamber and being adapted to receive the at least a portion of the object for washing;

projecting the first fluid through a plurality of nozzles and into the object receiving cavity, the plurality of nozzles being disposed on the wash chamber, wherein the nozzles comprise a first and a second set of nozzles;

wherein the first set of nozzles is disposed on the wash chamber in a ring proximate to the first end of the wash chamber, wherein each nozzle of the first set nozzles produces a spray that is projected at a pitch angle of between 15 and 35 degrees and at a roll angle of substantially 0 degrees;

wherein the second set of nozzles disposed along a length of the wash chamber, the second set of nozzles including a first nozzle located proximate to the opening in the first end of the wash chamber, wherein each nozzle of the second set of nozzles is adapted to produce a spray pattern that is projected at a pitch angle of substantially 0 degrees, wherein a first spray pattern associated with the first nozzle of the second set of nozzles is projected at a first roll angle, wherein a second spray pattern associated with a second nozzle of the second set of nozzles is projected at a second roll angle, the second roll angle steeper than the first roll angle, and wherein a remainder of the second set of nozzles each have a corresponding spray pattern oriented at progressively steeper roll angles; and

wherein the wash chamber is rotated about the axis of rotation at least during the step of projecting the fluid.

2. The method of claim 1, wherein the second set of nozzles include:

the first nozzle, wherein the first roll angle is between 0 and 15 degrees;

the second nozzle, wherein the second roll angle is between 15 and 30 degrees, wherein the second nozzle is adjacent to the first nozzle;

the remainder of the second set of nozzles including;

a third nozzle for producing a third spray pattern projected at a third roll angle of between 30 and 45 degrees, wherein the third nozzle is adjacent to the second nozzle;

a fourth nozzle for producing a fourth spray pattern projected at a fourth roll angle of between 45 and 60 degrees, wherein the fourth nozzle is adjacent to the third nozzle;

a fifth nozzle for producing a fifth spray pattern projected at a fifth roll angle of between 60 and 75 degrees, wherein the fifth nozzle is adjacent to the fourth nozzle; and

a sixth nozzle for producing a sixth spray pattern projected at a sixth roll angle of between 75 and 90 degrees, wherein the sixth nozzle is adjacent to the fifth nozzle.

3. The method of claim 1, wherein the spray pattern associated each nozzle of the first set of nozzles is at least one of:

a substantially planar spray;

a spherical spray;

a conical spray;

a pulsed spray; and

a jetted spray.

4. The method of claim 1, wherein the wash chamber includes an inner member and an outer member.

5. The method of claim 1, wherein the object includes at least one of:

an appendage of a person; and

an inanimate object.

6. A method, comprising:

providing a cleaning station, comprising;

a body;

a rotatable wash chamber associated with the body, the wash chamber including a first end and a second end, the wash chamber having an axis of rotation;

an appendage receiving cavity located within the wash chamber, the appendage receiving cavity adapted for being accessible by the portion of the at least one appendage through an opening in the first end of the wash chamber;

a first set of nozzles disposed on the wash chamber in a ring configuration, the first set of nozzles located proximate to the first end of the wash chamber, wherein each nozzle of the first set nozzles is adapted to produce a spray that is projected at a pitch angle of between 15 and 35 degrees and at a roll angle of substantially 0 degrees;

a second set of nozzles disposed on the wash chamber in a helical pattern along a length of the wash chamber, the second set of nozzles including a first nozzle located proximate to the opening in the first end of the wash chamber, wherein each nozzle of the second set of nozzles is adapted to produce a spray pattern that is projected at a pitch angle of substantially 0 degrees, wherein a first spray pattern associated with the first nozzle of the second set of nozzles is projected at a first roll angle, wherein a second spray pattern associated with a second nozzle of the second set of nozzles is projected at a second roll angle, the second roll angle being different from the first roll angle, and wherein a remainder of the second set of nozzles each have a corresponding spray pattern oriented at progressively greater roll angles; and

at least one off-helix nozzle disposed on the wash chamber;

initiating a flow of at least one fluid through a fluid inlet;

receiving, by the first set of nozzles, the second set of nozzles, and the at least one off-helix nozzle, the at least one fluid; and

projecting, by the first set of nozzles, the second set of nozzles, and the at least one off-helix nozzle, the at least one fluid into the appendage receiving cavity.

7. The method of claim 6, wherein the wash chamber includes inner and outer members.

8. A method, comprising:

providing a cleaning station, comprising;

(a) a body;

(b) a rotatable wash chamber associated with the body, the wash chamber including first and second ends, the rotatable wash chamber including an axis of rotation;

(c) an appendage receiving cavity located within the wash chamber;

(d) a plurality of nozzles positioned along a length of the wash chamber;

wherein at least one of the following is true of the plurality of nozzles;

(i) the nozzles have differing pitch angles, wherein, for a selected nozzle, a pitch angle is an angle of intersection between a nozzle plane defined by a nozzle orifice and a first plane normal to at least a portion of an adjacent surface of the wash chamber;

(ii) the nozzles have differing roll angles, wherein, for a selected nozzle, a roll angle is an angle between a nozzle orifice and a selected second plane and wherein the roll angle is measured in a third plane defined by to at least a portion of an adjacent surface of the wash chamber

receiving, in the appendage receiving cavity, at least a portion of at least one appendage of a person; and

spraying at least one cleaning fluid, through the plurality of nozzles, into the wash chamber to contact the at least a portion of the at least one appendage;

whereby, the at least a portion of the at least one appendage is contacted with the at least one cleaning fluid.

9. The method of claim 8, wherein the nozzles have differing roll angles.

10. The method of claim 9, wherein plurality of nozzles includes a first nozzle located proximate to the opening in the first end of the wash chamber and a second nozzle located at a greater distance from the opening than the first nozzle, wherein the first nozzle is adapted to produce a spray pattern projected at a roll angle and the second nozzle is adapted to produce a spray pattern projected at a second roll angle, and wherein the first roll angle is less than the second roll angle.

11. The method of claim 10, wherein the second roll angle ranges from about 15 to about 30 degrees.

12. The method of claim 10, wherein the plurality of nozzles have progressively greater roll angles with increasing distance from the opening end of the wash chamber.

13. The method of claim 12, wherein the plurality of nozzles include:

the first nozzle, wherein the first roll angle is between about 0 and about 15 degrees;

the second nozzle, wherein the second roll angle is between about 15 and about 30 degrees, wherein the second nozzle is located at a greater distance from the opening than the first nozzle;

a third nozzle for producing a third spray pattern projected at a third roll angle of between about 30 and about 45 degrees, wherein the second nozzle is located at a greater distance from the opening than the first and second nozzles;

a fourth nozzle for producing a fourth spray pattern projected at a fourth roll angle of between about 45 and about 60 degrees, wherein the second nozzle is located at a greater distance from the opening than the first, second, and third nozzles;

a fifth nozzle for producing a fifth spray pattern projected at a fifth roll angle of between about 60 and about 75 degrees, wherein the fifth nozzle is adjacent to the fourth nozzle, wherein the second nozzle is located at a greater distance from the opening than the first, second, third, and fourth nozzles; and

a sixth nozzle for producing a sixth spray pattern projected at a sixth roll angle of between about 75 and about 90 degrees, wherein the sixth nozzle is located at a greater distance from the opening than the first, second, third, fourth, and fifth nozzles.

14. The method of claim 8, wherein both (i) and (ii) are true and wherein the third plane is at least one of tangential to and parallel to an inner surface of the wash chamber adjacent to the selected nozzle.

15. The method of claim 8, wherein the pitch and roll angles are adapted to remain fixed throughout rotation of the wash chamber.

16. The method of claim 8, wherein the second plane is parallel to a plane of the opening of the wash chamber and normal to the second plane.

17. The method of claim 8, wherein the pitch angle is the angle between a plane of a spray pattern emitted by a selected nozzle and the first plane.

18. The method of claim 8, wherein the second plane is tangential to the at least a portion of the adjacent surface of the wash chamber.

19. The method of claim 8, wherein the nozzles have differing pitch angles.

20. The method of claim 8, wherein the wash chamber rotates through 360 degrees.