Dryer

• US 8,490,291 B2
• Filed: 06/13/2006
• Issued: 07/23/2013
• Est. Priority Date: 07/30/2005
• Status: Active Grant

• Current Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Original Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Inventors: Churchill, John, Dyson, James, Gammack, Peter David
• Primary Examiner(s): Gravini, Steve M
• Application Number:
  US11/997,303
• Publication Number:
  US 20080222910A1
• Time in Patent Office: 2,597 Days
• Field of Search: 34/77, 34/78, 34/82, 34/86, 34/90, 341/04, 341/05, 345/65, 342/02, 222/1, 222/52, 426/3, 73/232, 73/530.1, 392/380, 392/381, 392/384
• US Class Current: 34/90
• 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

Abstract

A hand drying apparatus has a casing, a cavity formed in the casing for receiving a user'"'"'s hands, a fan located in the casing and creating an airflow, and a plurality of openings communication with the fan and arranged to direct an airflow transversely across the cavity. The cavity has an entrance delimited by a front edge and a rear edge in which the openings are located. The shape of the front and rear edges is such that, when in use the user'"'"'s hands are introduced to the cavity, the distance between the user'"'"'s hands and the nearest opening is substantially uniform. Alternatively, one of the edges is substantially straight and the other of the said edges is curved so that the distance between the edges varies along the length of the cavity entrance. These arrangements enhance the drying efficiency of the dryer.

Claims

1. A hand drying apparatus, comprising a casing, a cavity formed in the casing for receiving a user'"'"'s hands, a fan located in the casing and creating an airflow, and a plurality of openings communicating with the fan and arranged to direct an airflow transversely across the cavity,

wherein the cavity has an entrance delimited by a front edge and a rear edge in which the openings are located, one of said edges being substantially straight and the other of said edges comprising two curved portions generally following the shape of the backs of a pair of human hands as they are inserted downwardly into the cavity through the cavity entrance.

2. The hand drying apparatus as claimed in claim 1, wherein the front edge of the cavity entrance is substantially straight and the rear edge comprises the two curved portions.

3. The hand drying apparatus as claimed in claim 2, wherein the shape of the rear edge is symmetrical about the centre of the cavity entrance.

4. The hand drying apparatus as claimed in claim 3, wherein the distance between the front edge and the rear edge decreases towards the centre of the cavity entrance.

5. The hand drying apparatus as claimed in claim 4, wherein the distance between the front edge and the rear edge at the centre of the cavity entrance is between 50 mm and 80 mm.

6. The hand drying apparatus as claimed in claim 5, wherein the distance between the front edge and the rear edge at the centre of the cavity entrance is about 65 mm.

7. The hand drying apparatus as claimed in claim 6, wherein the maximum distance between the front edge and the rear edge is between 70 mm and 100 mm.

8. The hand drying apparatus as claimed in claim 7, wherein the maximum distance between the front edge and the rear edge is about 85 mm.

9. The hand drying apparatus as claimed in any of claim 1, 2, or 3-8, wherein the openings are formed by continuous slots extending along the length of each of the front and rear edges.

10. The hand drying apparatus as claimed in claim 9, wherein the slots are arranged to emit air therefrom in a direction which is perpendicular to the extent of the slot.

11. The hand drying apparatus as claimed in any of claim 3, 4, or 5, wherein the maximum distance between the front edge and the rear edge is between 70 mm and 100 mm.