US6010561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner and a filter assembly therefor
Assignee: Dyson Technology Ltd
•
Filing: 1998-07-21
•
Granted: 2000-01-04
•
Expires: 2018-07-21
Abstract
Abstract The invention provides a filter assembly for use in a vacuum cleaner. The vacuum cleaner includes an airflow path (18), a dirt and dust collecting device arranged in the airflow path (18), a motor or fan unit (10) for causing air to flow along the airflow path (18). A first filter (12) is arranged immediately upstream of the motor or fan unit (10) and a second filter (14) is arranged downstream of the motor or fan unit (10), wherein the first and second filters (12, 14) are connected together so as to form the single filter assembly. The connection of the filters (12, 14) encourages the user of the vacuum cleaner to regularly maintain both filters (12, 14) thus improving the performance of the vacuum cleaner.
Inventors
- 👤 James Dyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:54
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/122; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A motor filter assembly consisting of a first filter connected to a second filter, wherein the filter assembly is provided in a vacuum cleaner comprising an airflow path, dirt and dust collecting means arranged in the airflow path, a motor or fan unit for causing air to flow along the airflow path and wherein the first filter is mounted adjacent to the motor or fan unit immediately upstream of the motor or fan unit for air inlet and the connected second filter is mounted adjacent to the motor or fan unit downstream of the motor or fan unit for air outlet wherein the first and second filters are separate and disconnected from the dirt and dust collecting means and the first and second filters are also simultaneously removable from the motor or fan unit.
Claim 2
Dependent Claim
134 words
A motor filter assembly consisting of a first filter connected to a second filter, wherein the filter assembly is provided in a vacuum cleaner comprising an airflow path, dirt and dust collecting means arranged in the airflow path, a motor or fan unit for causing air to flow along the airflow path and wherein the first filter is mounted adjacent to the motor or fan unit immediately upstream of the motor or fan unit for air inlet and the connected second filter is mounted adjacent to the motor or fan unit downstream of the motor or fan unit for air outlet wherein the first and second filters are separate and disconnected from the dirt and dust collecting means and the first and second filters are also simultaneously removable from the motor or fan unit.
Claim 3
Dependent Claim
11 words
The filter assembly of claim 1 wherein the filters are electrostatic.
Claim 4
Dependent Claim
25 words
The filter assembly of claim 1 wherein the filters are at right angles to each other when mounted adjacent to the motor or fan unit.
Claim 5
Dependent Claim
31 words
The filter assembly of claim 1 wherein the filters are electrostatic, and wherein the filters are at right angles to each other when mounted adjacent to the motor or fan unit.
References Cited (Backward Citations)
US3871847A
Cited
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Cited
GB2167680A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-03 | 2003-07-05 | 2004-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-03 | 2007-07-05 | 2008-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-03 | 2011-07-05 | 2012-01-04 | $7700.00 | Window Closed / Lapsed |