Patent EP1000579A2 successfully refreshed from Google Patents.
EP1000579A2
Expired / Lapsed
EP
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Vacuum cleaner having a dual filter assembly
Assignee: Shop Vac Corp
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Filing: 1999-01-20
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Granted: —
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Expires: 2019-01-20
Abstract
Abstract A vacuum cleaner (10) having a dual filter assembly (26) includes a filter cage (32), a primary filter (28) disposed on the filter cage (32), and a secondary filter (30) disposed downstream of the primary filter (28). A float valve (64;52;62) between the primary filter (28) and the secondary filter (30) inhibits liquid from coming into contact with the secondary filter (30). <IMAGE>
Inventors
- 👤 Li H. Liu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:17
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/127; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; A47L7/00; A47L7/0004; A47L7/0023; A47L7/0028; A47L7/0038; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
43 words
A vacuum cleaner having a dual filter assembly comprising: a filter support; a primary filter disposed on the filter support; a secondary filter disposed downstream of the primary filter; and a valve for inhibiting liquid from coming into contact with the
secondary filter.
Claim 2
Dependent Claim
14 words
A vacuum cleaner of claim 1 wherein the filter support comprises a
filter cage.
Claim 3
Dependent Claim
13 words
A vacuum cleaner of claim 1 wherein the valve comprises a float valve.
Claim 4
Dependent Claim
17 words
A vacuum cleaner of claim 1 wherein the secondary filter is disposed on
a second filter support.
Claim 5
Dependent Claim
22 words
A vacuum cleaner of claim 1 wherein the secondary filter is disposed in
a cage base removably attached to a tank lid.
Claim 6
Dependent Claim
21 words
A vacuum cleaner of claim 5 wherein the cage base is attached to the
tank lid by a plurality of clamps.
Claim 7
Dependent Claim
20 words
A vacuum cleaner of claim 5 wherein the cage base is disposed between
the filter support and the tank lid.
Claim 8
Dependent Claim
20 words
The vacuum cleaner of claim 1 further comprising a filter retainer for
retaining the primary filter on the filter support.
Claim 9
Dependent Claim
14 words
The vacuum cleaner of claim 1 wherein the secondary filter comprises a
HEPA filter.
Claim 10
Dependent Claim
20 words
The vacuum cleaner of claim 1 wherein the valve is upstream the
secondary filter and downstream of the primary filter.
Claim 11
Dependent Claim
18 words
The vacuum cleaner of claim 10 wherein the valve comprises a float ball
disposed in the filter cage.
Claim 12
Dependent Claim
68 words
A wet/dry vacuum cleaner comprising: a first filter cage; a cage base attached to the first filter cage; a primary filter disposed on the first filter cage; a secondary filter disposed on a second filter cage, inside of the cage
base, downstream of the primary filter; and a float ball disposed inside of the first filter cage for inhibiting fluid from
coming into contact with the secondary filter.
References Cited (Backward Citations)
No citation records indexed.
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