# US 2019/0167055 A1 · Cyclone unit

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- Number: US 2019/0167055 A1
- Document ID: US20190167055A1
- Status: Published application
- Kind: A1
- Application number: 16/144,236
- Filed: 2018-09-27
- Published: 2019-06-06
- Earliest claimed: 2017-12-01
- Assignees: Makita Corporation
- Applicants: Makita Corporation
- Inventors: Takayuki TAHARA; Akane AKISADA
- Web page: https://patentgrep.com/patent/US20190167055A1

## CPC

- A47L 9/1608: {Cyclonic chamber constructions}
- A47L 5/24: Hand-supported suction cleaners
- A47L 5/362: {of the horizontal type, e.g. canister or sledge type}
- A47L 9/104: {Means for intercepting small objects}
- A47L 9/165: {Construction of inlets}
- A47L 9/1666: {with filtering means}
- A47L 9/1683: {Dust collecting chambers; Dust collecting receptacles}
- A47L 9/1691: {Mounting or coupling means for cyclonic chamber or dust receptacles}
- A47L 9/248: {Parts, details or accessories of hoses or pipes (nozzles A47L9/02)}
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

A cyclone unit capable of enhancing dust collection performance. A cyclone unit includes a cyclone unit body, a dust box and a core tube. The cyclone unit body includes a lower base, an upper base and a middle base sandwiched between the lower base and the upper base. The dust box is assembled to the cyclone unit body so as to collect dust and dirt. The core tube, having a meshed shape, is assembled to the middle base so as to be located inside the dust box. The core tube is detachable from the middle base while the upper base is assembled to the lower base.

## Claims

### Claim 1

A cyclone unit comprising:
a cyclone unit body including
a lower base,
an upper base assembled to the lower base, and
a middle base sandwiched between the lower base and the upper base;
a dust box assembled to the cyclone unit body so as to collect dust and dirt; and
a core tube having a meshed shape, the core tube being assembled to the middle base so as to be located inside the dust box, the core tube being detachable from the middle base while the upper base is assembled to the lower base.

### Claim 2 (depends on 1)

The cyclone unit according to claim 1, wherein the core tube is assemblable to the middle base by rotation thereof.

### Claim 3 (depends on 2)

The cyclone unit according to claim 2, wherein
the middle base includes
a through hole, and
a hooked portion formed on an edge of the through hole,
the core tube includes a hook tab, and
the hook tab overlaps the hooked portion by rotation of the core tube inserted into the through hole.

### Claim 4 (depends on 3)

The cyclone unit according to claim 3, wherein the hook tab is engageable with the hooked portion.

### Claim 5 (depends on 4)

The cyclone unit according to claim 4, wherein the hook tab and the hooked portion are disengaged from each other by reverse rotation of the core tube.

### Claim 6 (depends on 1)

The cyclone unit according to claim 1, wherein the cyclone unit body is attachable to an end or an intermediate part of a coupling tube, the coupling tube coupling a cleaner body and a nozzle head therethrough, the cleaner body generating a suction force, the nozzle head sucking air by the suction force generated in the cleaner body.

### Claim 7

A cyclone unit comprising:
a cyclone unit body;
a dust box assembled to the cyclone unit body so as to collect dust and dirt; and
a core tube having a meshed shape, the core tube being assembled to the cyclone unit body so as to be located inside the dust box, the core tube being detachable from the cyclone unit body.

### Claim 8 (depends on 7)

The cyclone unit according to claim 7, wherein the core tube is assemblable to the cyclone unit body by rotation thereof.

### Claim 9 (depends on 7)

The cyclone unit according to claim 7, wherein the cyclone unit body is attachable to an end or an intermediate part of a coupling tube, the coupling tube coupling a cleaner body and a nozzle head therethrough, the cleaner body generating a suction force, the nozzle head (20) sucking air by the suction force generated in the cleaner body.