Self-cleaning hand washer

• US 5,860,437 A
• Filed: 08/07/1996
• Issued: 01/19/1999
• Est. Priority Date: 08/07/1996
• Status: Expired due to Term

• Current Assignee: Sunnybrook and Women's College Health Sciences Centre
• Original Assignee: CSIA Research Foundation
• Inventors: Fernie, Geoffrey Roy
• Primary Examiner(s): Coe, Philip R.
• Application Number:
  US08/692,226
• Time in Patent Office: 895 Days
• Field of Search: 134/95.2, 134/95.3, 134/99.2, 134/104.1, 134/104.2, 134/200, 604/289
• US Class Current: 134/95.2
• CPC Class Codes: A47K 10/48 Drying by means of hot air hair-drying devices A45D20/00; curative hot-air baths A61H33/06; electric heating elements H05B
• CPC Class Codes: A47K 2210/00 Combinations of water taps, soap dispensers and hand dryers
• CPC Class Codes: A61B 90/80 Implements for cleaning or washing the skin of surgeons or patients
• CPC Class Codes: E03C 1/057 touchless, i.e. using sensors
• CPC Class Codes: E03C 1/14 Wash-basins connected to the waste-pipe
• CPC Class Codes: E03C 2201/90 Basins movable between several positions

Abstract

A hand washing apparatus and having a hand washing bowl mounted at a suitable height for washing the hands, the bowl being moveable between open and closed positions, controls for moving the bowl between a hand washing position and an inactive position, a dispenser for dispensing warm water over the hands in the bowl, a dispenser for dispensing soap over the hands in the bowl, and, a dispenser for dispensing rinse water over the hands in the bowl. Also disclosed is a method of cleansing the hands using such apparatus.

Claims

1. A hand washing apparatus comprising:

a hand washing bowl mounted at a suitable height for washing hands, said bowl being mounted for rotation about a generally horizontal axis between a hand washing position and an inactive position;

a controller for rotating said bowl between said hand washing position and said inactive position;

a warm water dispenser for dispensing warm water over hands in the bowl;

a soap dispenser for dispensing soap over hands in the bowl; and

a rinse water dispenser for dispensing rinse water over hands in the bowl.

2. A hand washing apparatus as claimed in claim 1 and wherein said inactive position of said bowl renders said bowl inaccessible, so as to avoid collection of externally introduced contamination.

3. A hand washing apparatus as claimed in claim 1 and wherein said bowl is of generally hemispherical shape, and wherein, in said hand washing position, is open upwardly, for access by a user, and when in said inactive position, is rotated into a closed position wherein the interior of said bowl is inaccessible.

4. A hand washing apparatus as claimed in claim 1 including an air dryer for generating a stream of hot air flowing over the hands, said air dryer being automatically operable after completion of said rinsing of said hands by said rinse water.

5. A hand washing apparatus as claimed in claim 4 wherein said hot air is disinfected prior to flowing over the hands.

6. A hand washing apparatus as claimed in claim 1 including a discharger for discharging a disinfectant fluid into said bowl when said bowl is in its inactive position, for flowing around the interior of said bowl and rendering the same clean.

7. A hand washing apparatus as claimed in claim 6 wherein an air stream is further adapted to flow around said bowl when said bowl is rotated into its inactive position and cleaned, for drying the bowl.

8. A hand washing apparatus as claimed in claim 1 including a collection sink arranged around said bowl, and whereby when said bowl is rotated into its inactive position, the liquid contents of said bowl are discharged into said sink as waste.

9. A hand washing apparatus comprising:

a hand washing bowl mounted at suitable height for washing hands;

a controller for opening said bowl into a hand washing position and closing said bowl into an inactive position;

a warm water dispenser for dispensing warm water over hands in the bowl;

a soap dispenser for dispensing soap over hands in the bowl; and

,

a rinse water dispenser for dispensing rinse water over hands in the bowl.

10. A hand washing apparatus as claimed in claim 9 and wherein said inactive position of said bowl renders said bowl inaccessible, so as to avoid collection of contamination.

11. A hand washing apparatus as claimed in claim 9 including an air dryer for generating a stream of hot, disinfected air flowing over the hands, said air dryer being automatically operable after completion of said rinsing of said hands by said rinse water.

12. A hand washing apparatus as claimed in claim 11 including a discharger for discharging a disinfectant fluid into said bowl when said bowl is in its inactive position, for flowing around the interior of said bowl and rendering the same clean.

13. A hand washing apparatus as claimed in claim 12 wherein said hot air stream is further adapted to flow around the interior of said bowl when said bowl has been cleaned.

14. A hand washing apparatus comprising:

a housing;

a hand washing bowl mounted at a suitable height on said housing for washing hands, said bowl being moveable relative to said housing;

a controller for moving said bowl between a hand washing position and an inactive position;

a dispenser for dispensing warm water and soap and rinse water over the hands in the bowl;

a drain for removing the water from the bowl; and

, means for cleaning the bowl after washing.

15. A hand washing apparatus as claimed in claim 14 and wherein said inactive position of said bowl renders said bowl inaccessible, so as to avoid collection of contamination.

16. A hand washing apparatus as claimed in claim 14 including an air dryer for generating a stream of disinfected hot air flowing over the hands, said air drying means being automatically operable after completion of said rinsing of said hands by said rinse water.

17. A hand washing apparatus as claimed in claim 14 including a discharger for discharging a disinfectant fluid into said bowl when said bowl is in its inactive position, for flowing around the interior of said bowl and rendering the same clean.

18. A hand washing apparatus as claimed in claim 17 wherein an air stream is adapted to flow around said bowl when said bowl has been cleaned, to dry the bowl.

19. A hand washing apparatus as claimed in claim 14 including at least one drain located in said bowl, whereby the liquid contents are discharged as waste, when in the inactive position.

20. A hand washing apparatus comprising:

a housing;

a hand washing bowl mounted at a suitable height on said housing for washing hands, said bowl being moveable between an exposed position and a covered position;

a dispenser for dispensing warm water, soap and rinse water over hands in the bowl; and

a foot operated controller for controlling movement of said bowl between said exposed position and said covered position, and controlling said dispensing means.

21. A hand washing apparatus as claimed in claim 20 and wherein said bowl in said exposed position,is open upwardly, for access by a user, and when in said covered position, is closed wherein the interior of said bowl is inaccessible.

22. A hand washing apparatus as claimed in claim 20 including an air dryer for generating a stream of disinfected hot air flowing over the hands.

23. A hand washing apparatus as claimed in claim 20 including a discharger for discharging a disinfectant fluid into said bowl when said bowl is in its covered position, for flowing around the interior of said bowl and rendering the same clean.

24. A hand washing apparatus as claimed in claim 23 wherein an air stream is adapted to flow around said bowl when said bowl is cleaned, to dry said bowl.

25. A hand washing apparatus as claimed in claim 20 including a drain connected with said bowl whereby the liquid contents of said bowl are discharged as waste.