Vacuum cleaner

• US 4,041,568 A
• Filed: 09/13/1976
• Issued: 08/16/1977
• Est. Priority Date: 05/05/1975
• Status: Expired due to Term

• Current Assignee: James F. Duffy
• Original Assignee: William A. Rhodes
• Inventors: Rhodes, William A.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/722,732
• Time in Patent Office: 337 Days
• Field of Search: 15/344, 15/383, 15/385, 15/386
• US Class Current: 15/344
• CPC Class Codes: A47L 5/26 with driven dust-loosening tools

Abstract

The disclosure relates to a small vacuum cleaner to be used by one hand of an operator and particularly for vacuum cleaning small areas and objects such as clothing or other areas such as furniture where lint or other foreign matter accumulates. The said vacuum cleaner comprises a centrifugal impeller mounted in a housing wherein a flexible portion of the impeller extends through an inlet opening in the centrifugal compressor and the flexible portion extends beyond the housing at the inlet opening such as to be capable of rubbing and flapping foreign matter loose from a surface being cleaned so that when the material is loosened it is entrained in the air stream going into the impeller housing through the inlet opening therein. The disclosure also relates to a novel impeller having its peripheral portion made of a flexible material and operating adjacent an inner annular wall of the compressor housing so that lint such as hair and other foreign matter may be rolled into a ball shaped mass and may be dumped out through the inlet opening of the housing when operation of the impeller has stopped and it is in a rest position.

Claims

1. In a vacuum cleaner:

a housing having a motor mounted thereon having a motor shaft extending into said housing;

a centrifugal impeller rotatably mounted on said motor shaft;

said housing having an outlet and a circular inlet opening;

said impeller adapted to create an air stream into said housing through said inlet and outwardly through said outlet;

said impeller having a flexible flapper portion extending outwardly through said inlet opening beyond said housing;

whereby during rotation and centrifugal air pumping operations of said impeller said flexible flapper portion may contact foreign matter on a surface being cleaned to thereby loosen said foreign matter into the air stream entering said inlet opening;

said flapper portion extending radially away from the axis of said motor shaft a distance substantially equal to the radius of said housing inlet opening;

said impeller being a single blade structure and provided with a radially extending flexible extremity spaced from and adjacent to the inside of said housing to allow lint to be rolled into a ball between the extremity of said impeller and the inner surrounding wall of said housing;

whereby said ball may subsequently be dropped from said housing through said inlet opening after the motor is deenergized and the impeller has come to rest.

2. The invention as defined in claim 1, wherein:

said housing is provided with standoff feet extending outwardly beyond said inlet opening so as to hold the inlet opening of said housing in spaced relation to a surface being cleaned to thereby permit air flow between the surface being cleaned and the housing to said inlet opening.

3. The invention as defined in claim 1, wherein:

a motor cover is coupled to said housing, endoses said motor, and is provided with a laterally extending handle portion for use in handling the vacuum cleaner during operation thereof.

4. The invention as defined in claim 1, wherein:

a screen is disposed over said outlet to prevent material collected in said housing from escaping to the atmosphere.

5. The invention as defined in claim 4, wherein:

said housing is provided with one side at which said inlet is disposed;

said housing having an opposite side in which said outlet is disposed;

said screen being disposed on the inner side of said housing overlying said outlet.

6. The invention as defined in claim 5, wherein:

said outlet comprises a plurality of openings.

7. The invention as defined in claim 6, wherein:

said motor is mounted centrally of said housing said plurality of outlets are arranged in a substantially annular manner outwardly of and generally concentrically with said motor;

a motor housing is secured to said housing outwardly relative to said motor and inwardly relative to said annular row of outlets;

said handle having a radially extending handle portion extending radially relative to the axis of said motor shaft.