EP0042723B1
Expired / Lapsed
EP
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Vacuum cleaning appliance
Assignee: Cessione notetry Ltd
•
Filing: 1981-06-17
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Granted: 1985-08-21
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Expires: 2001-06-17
Abstract
No abstract record available.
Inventors
- 👤 James Dyson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:32
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1616; A47L9/1625; A47L9/1633; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A vacuum cleaning appliance including cyclone units of successively higher efficiency, in the capability of depositing fine dust, in series connection, the highest efficiency cyclone having a frusto-conical part (15) tapered away from its entry (18) and means for generating an airflow from a dirty air inlet sequentially through the cyclone units characterised in that a lower efficiency cyclone unit upstream of the highest efficiency unit has a body (13) without the taper away from the air entry, being either cylindrical or having a reverse taper.
Claim 2
Dependent Claim
86 words
A vacuum cleaning appliance including cyclone units of successively higher efficiency, in the capability of depositing fine dust, in series connection, the highest efficiency cyclone having a frusto-conical part (15) tapered away from its entry (18) and means for generating an airflow from a dirty air inlet sequentially through the cyclone units characterised in that a lower efficiency cyclone unit upstream of the highest efficiency unit has a body (13) without the taper away from the air entry, being either cylindrical or having a reverse taper.
Claim 3
Dependent Claim
53 words
A vacuum cleaning appliance according to Claim 1 characterised by a casing (1) with a dirty air inlet, a generally cylindrical container (13) constituting the lower efficiency cyclone unit positioned within the casing and being connected to the dirty air inlet, the high efficiency cyclone being positioned within the lower efficiency cyclone unit.
Claim 4
Dependent Claim
65 words
A vacuum cleaning appliance according to Claim 2 characterised by a dirty air entry passage (11) extending up one side of the casing to the entry port (14) of container (13) and a clean air exit passage (21) extending down the other side of the casing from the exit to the high efficiency cyclone, a pipe (14) connecting the low and high efficiency cyclone units.
Claim 5
Dependent Claim
45 words
A vacuum cleaning appliance according to any preceding claim capable of working in an upright mode on wheels (9) characterised by a cleaning head (2) with rotatable brush (4) at the dirty air inlet, the means for generating the airflow being a motor-driven fan (3).
Claim 6
Dependent Claim
23 words
A vacuum cleaning appliance according to Claim 4 characterised in that the motor of fan (3) also drives brush (4) through belt (5).
References Cited (Backward Citations)
No citation records indexed.
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