Compact vacuum cleaner

• US 4,204,298 A
• Filed: 11/15/1978
• Issued: 05/27/1980
• Est. Priority Date: 11/18/1977
• Status: Expired due to Term

• Current Assignee: Hiroyuki Handa, Tomoko Handa
• Original Assignee: Hiroyuki Handa, Tomoko Handa
• Inventors: Handa, Hiroyuki, Handa, Tomoko
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/960,999
• Time in Patent Office: 559 Days
• Field of Search: 15/344, 15/346
• US Class Current: 15/344
• CPC Class Codes: A47L 5/24 Hand-supported suction cleaners

Abstract

An improved compact-type vacuum cleaner is provided. The vacuum cleaner comprises a hollow body member having a closed end and an open end, driving means disposed in said body member, fan means also disposed in said body member and adapted to be driven by said driving means, and duct means also disposed in said body member and adapted to recirculate within said body member an air flow generated by said fan means, said duct means having one end connected to the suction side of said fan means and the other end connected to the discharge side of said fan means.

The vacuum cleaner may further be provided with wiping means attached to the open end of said hollow body member.

Claims

1. A vacuum cleaner comprising:

a hollow body member having a closed upper end and an open lower end adapted to be disposed so as to apply an air draft to a surface to be claimed;

driving means disposed in said body member;

means connecting said driving means with a source of energy to drive said driving means;

fan means disposed in said body member and adapted to be driven by said driving means; and

duct means formed in part by said body member and in part by partitions disposed in said body member and adapted to circulate within said body member an air flow generated by said fan means, said duct means having an outlet end adjacent to a suction side of said fan means and an inlet end confronted by a discharge side of said fan means, a portion of said duct means defining a dust collecting chamber into which dust may pass through openings in the wall of said duct whereby dust may be collected in said chamber and a door through which dust collected in said chamber may be removed.

2. The vacuum cleaner as claimed in claim 1, wherein said fans means is adapted to induce said air flow in the direction of the axis of rotation of said fan.

3. The vacuum cleaner as claimed in claim 1, wherein said fan means is adapted to induce said air flow in a direction substantially perpendicular to the axis of rotation of said fan.

4. The vacuum cleaner as claimed in claim 1, wherein said driving means is a motor operatively connected with said fan means.

5. The vacuum cleaner as claimed in claim 1, further including a wiping means disposed at the open lower end of said hollow body member and adapted for wiping dust.

6. The vacuum cleaner as claimed in claim 5, wherein said wiping means includes a feft member.

7. The vacuum cleaner as claimed in claim 5, including brush member disposed at the open end of said hollow body member and adapted to surround said wiping member so as to substantially shield the space around said wiping member from ambient air when said vacuum cleaner is disposed on said surface to be cleaned.

8. The vacuum cleaner as claimed in claim 7, wherein said hollow body member is provided with a band which is designed to be held in the hand during the cleaning operation.

9. The vacuum cleaner as claimed in claim 1, further including a brush member disposed at the open end of said hollow body member and adapted to shield between an inner side and an outer side of said hollow body member when said vacuum cleaner is disposed on said surface to be cleaned.

10. The vacuum cleaner as claimed in claim 9, wherein said brush member is a brush made of synthetic fiber or fur.

11. The vacuum cleaner as claimed in claim 9, further including a handle designed to be held in the hand during the cleaning operation.

12. The vacuum cleaner as claimed in claim 1, wherein said duct means includes a filter disposed therein.

13. The vacuum cleaner as claimed in claim 12, wherein the fineness of said filter increases gradually toward an outlet of said duct means.

14. The vacuum cleaner as claimed in claim 1, wherein said driving means and said fan means are connected in series to form a cylindrical assembly and disposed at a corner of a space defined at the lower portion of said hollow body member.

15. The vacuum cleaner as claimed in claim 11, wherein said partition is arranged so that said duct means surrounds said driving means.

16. The vacuum cleaner as claimed in claim 1 wherein said partition further includes apertures through which said dust is dropped into said dust collecting chamber.

17. The vacuum cleaner as claimed in claim 1 further including a built-in battery disposed in said hollow body member for energizing said driving means.