Patent US5946771A successfully refreshed from Google Patents.
US5946771A
Expired / Lapsed
US
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Vacuum cleaner air exhaust arrangement
Assignee: Techtronic Floor Care Technology Ltd
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Filing: 1997-01-09
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Granted: 1999-09-07
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Expires: 2017-01-09
Abstract
Abstract A hard bag cleaner is provided where cleaner air is exhausted through a lower positioned motor-fan system disposed in the hard bag portion of its cleaner. Air then moves upwardly along the side of the hard bag portion of the cleaner to be exhausted horizontally outwardly therefrom. A series of vertically extending guiding vents formed by vertically extending louvers baffle exhaust air flow and also serve as an inner support for a filter mounted outwardly against these louvers.
Inventors
- 👤 Nick M. Bosyj
- 👤 Arne J. Diehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:27
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/122; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32; A47L9/0009; A47L9/0018; A47L9/0036; A47L9/0045; A47L9/0081; A47L9/22; A47L9/28; A47L9/2805; A47L9/281; A47L9/2857; A47L9/32; A47L9/325
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
59 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; and a series of spaced, parallel exhaust louvers, each of said louvers extending along substantially an entire length of a longitudinal wall of said exhaust duct.
Claim 2
Dependent Claim
59 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; and a series of spaced, parallel exhaust louvers, each of said louvers extending along substantially an entire length of a longitudinal wall of said exhaust duct.
Claim 3
Dependent Claim
27 words
The exhaust system for a vacuum cleaner as set out in claim 1 wherein: a) said exhaust duct includes a discharge port contiguous to said exhaust louvers.
Claim 4
Dependent Claim
29 words
The exhaust system for a vacuum cleaner as set out in claim 2 wherein: a) said exhaust louvers extend in said exhaust duct along and confront said discharge port.
Claim 5
Dependent Claim
25 words
The exhaust system for a vacuum cleaner as set out in claim 3 wherein: a) a filter is disposed generally outwardly of said exhaust duct.
Claim 6
Dependent Claim
36 words
The exhaust system for a vacuum cleaner as set out in claim 4 wherein: a) said filter is formed as a filter pad; and b) said pad filter rests on outer face terminations of said louvers.
Claim 7
Dependent Claim
45 words
The exhaust system for a vacuum cleaner as set out in claim 5 wherein: a) said filter pad is held to rest against said outer face terminations of said louvers by a holding frame; and b) said holding frame is mounted to said vacuum cleaner.
Claim 8
Dependent Claim
32 words
The exhaust system for a vacuum cleaner as set out in claim 6 wherein: a) an outer exit grill is attached to said holding frame to cover and protect said filter pad.
Claim 9
Dependent Claim
21 words
The exhaust system for a vacuum cleaner as set out in claim 7 wherein: a) said outer exit grill is openable.
Claim 10
Dependent Claim
25 words
The exhaust system for a vacuum cleaner as set out in claim 8 wherein: a) said exhaust grill is hingedly attached to said holding frame.
Claim 11
Dependent Claim
45 words
The exhaust system for a vacuum cleaner as set out in claim 1 wherein: a) said exhaust duct and spaced exhaust louvers extend vertically; and b) said flow of air exhausts outwardly of said exhaust duct in a transverse manner between said spaced exhaust louvers.
Claim 12
Dependent Claim
34 words
The exhaust system for a vacuum cleaner as set out in claim 10 wherein: a) said exhaust louvers are deeper in dimension at their entrance ends and narrower in dimension at their discharge ends.
Claim 13
Dependent Claim
27 words
The exhaust system for a vacuum cleaner as set out in claim 1 wherein: a) said exhaust louvers are at least partly triangular in shape in elevation.
Claim 14
Dependent Claim
64 words
The exhaust system of a vacuum cleaner as set out in claim 1 wherein: a) a discharge port is provided in said exhaust duct; b) said spaced exhaust louvers extend axially along said duct to transversely face said discharge port; c) whereby said louvers tend to smooth air flow, dampen air flow noise and distribute said baffled air flow along said louvered discharge port.
Claim 15
Dependent Claim
27 words
The exhaust system for a vacuum cleaner as set out in claim 13 wherein: a) said exhaust duct extends vertically along the side of said vacuum cleaner.
Claim 16
Dependent Claim
91 words
An exhaust system for a vacuum cleaner including: an exhaust duct extending along the side of said vacuum cleaner; a series of spaced, parallel exhaust louvers, each of said louvers extending substantially an entire length of said exhaust duct; said exhaust duct having a discharge port formed therein; a filter pad disposed outwardly of said discharge port; a mounting frame holding said filter pad attached to said vacuum cleaner; said mounting frame including at least one discontinuity; and whereby the presence or absence of said filter pad may be visually ascertained.
Claim 17
Dependent Claim
91 words
An exhaust system for a vacuum cleaner including: an exhaust duct extending along the side of said vacuum cleaner; a series of spaced, parallel exhaust louvers, each of said louvers extending substantially an entire length of said exhaust duct; said exhaust duct having a discharge port formed therein; a filter pad disposed outwardly of said discharge port; a mounting frame holding said filter pad attached to said vacuum cleaner; said mounting frame including at least one discontinuity; and whereby the presence or absence of said filter pad may be visually ascertained.
Claim 18
Dependent Claim
59 words
The exhaust system for a vacuum cleaner as set out in claim 15 wherein: a) said mounting frame has said discontinuity formed on an outer frame member; and b) an inner frame is disposed closely to and parallel to the outer frame member to serve to clamp said filter pad between it and the border of said exhaust duct.
Claim 19
Dependent Claim
64 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; a series of spaced exhaust louvers, of each of said louvers extending along substantially the entire length of said exhaust duct; and a filter disposed generally outwardly of said exhaust duct.
Claim 20
Dependent Claim
64 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; a series of spaced exhaust louvers, of each of said louvers extending along substantially the entire length of said exhaust duct; and a filter disposed generally outwardly of said exhaust duct.
Claim 21
Dependent Claim
96 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; a series of spaced exhaust louvers extending within said exhaust duct in a longitudinal direction along said exhaust duct; a filter pad disposed outwardly of a discharge port for said exhaust duct; a mounting frame attached to said cleaner maintaining said filter pad over said discharge port; and a grill hingedly mounted to said mounting frame to cover and protect said filter pad.
Claim 22
Dependent Claim
96 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluently connected to the discharge side of said motor-fan assembly; a series of spaced exhaust louvers extending within said exhaust duct in a longitudinal direction along said exhaust duct; a filter pad disposed outwardly of a discharge port for said exhaust duct; a mounting frame attached to said cleaner maintaining said filter pad over said discharge port; and a grill hingedly mounted to said mounting frame to cover and protect said filter pad.
Claim 23
Dependent Claim
36 words
The exhaust system for a vacuum cleaner as set out in claim 18 wherein: said mounting frame includes at least one discontinuity; and whereby the presence or absence of said filter pad can be visually determined.
Claim 24
Dependent Claim
127 words
An exhaust system for a vacuum cleaner including: an exhaust duct extending along the side of said vacuum cleaner; a series of spaced, parallel and continuous exhaust louvers extending within said exhaust duct; said exhaust duct having a discharge port formed therein; a filter pad disposed outwardly of said discharge port; a mounting frame holding said filter pad attached to said vacuum cleaner; said mounting frame including at least one discontinuity; whereby the presence or absence of said filter pad may be visually ascertained; said mounting frame has said discontinuity formed on an outer frame member; and and inner frame is disposed closely to and parallel to the outer frame member to serve to clamp said filter pad between it and the border of said exhaust duct.
Claim 25
Dependent Claim
127 words
An exhaust system for a vacuum cleaner including: an exhaust duct extending along the side of said vacuum cleaner; a series of spaced, parallel and continuous exhaust louvers extending within said exhaust duct; said exhaust duct having a discharge port formed therein; a filter pad disposed outwardly of said discharge port; a mounting frame holding said filter pad attached to said vacuum cleaner; said mounting frame including at least one discontinuity; whereby the presence or absence of said filter pad may be visually ascertained; said mounting frame has said discontinuity formed on an outer frame member; and and inner frame is disposed closely to and parallel to the outer frame member to serve to clamp said filter pad between it and the border of said exhaust duct.
Claim 26
Dependent Claim
86 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluent connected to the discharge side of motor-fan assembly, said exhaust duct having a longitudinal wall; a series of spaced exhaust louvers extending longitudinally within said exhaust duct; and an exhaust grill positioned over said exhaust duct, said exhaust grill being formed with a series of exhaust slots which extend transversely across said exhaust duct generally perpendicular to the longitudinally extending exhaust louvers.
Claim 27
Dependent Claim
86 words
An exhaust system for a vacuum cleaner including: a motor-fan assembly providing a flow of air to said exhaust system; an exhaust duct confluent connected to the discharge side of motor-fan assembly, said exhaust duct having a longitudinal wall; a series of spaced exhaust louvers extending longitudinally within said exhaust duct; and an exhaust grill positioned over said exhaust duct, said exhaust grill being formed with a series of exhaust slots which extend transversely across said exhaust duct generally perpendicular to the longitudinally extending exhaust louvers.
Claim 28
Dependent Claim
37 words
The exhaust system for a vacuum cleaner as set out in claim 21 wherein: said exhaust duct and exhaust louvers extend vertically; and said exhaust slots extend horizontally when the vacuum cleaner is in an upright position.
References Cited (Backward Citations)
US2174443A
Cited
US2979755A
Cited
GB989204A
Cited
US3203157A
Cited
US3218783A
Cited
FR1440924A
Cited
GB1154604A
Cited
US3614860A
Cited
CA931308A
Cited
US3866263A
Cited
US4209875A
Cited
AU3959278A
Cited
US4202070A
Cited
US4517705A
Cited
US4724574A
Cited
KR940000712A
Cited
US5685894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |