US4905342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable vacuum cleaner
Assignee: Sharp Corp
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Filing: 1989-03-07
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Granted: 1990-03-06
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Expires: 2009-03-07
Abstract
Abstract A portable vacuum cleaner contains within its housing a dust collecting part in front of a fan. A suction inlet is at the front end and the opening surface defined by it is nearly horizontal and either coplanar with or protruding below the bottom surface of the housing so that the accumulated dust will not fall out of the suction inlet when the fan is stopped.
Inventors
- 👤 Yasukazu Ataka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; A47L9/242; A47L9/244; A47L5/00; A47L5/12; A47L5/22; A47L5/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A portable vacuum cleaner comprising a housing having a front end, back end and a bottom surface, said front end being formed with a suction inlet having an opening, the surface defining said opening being no higher than said bottom surface, a dust collecting means inside said housing, a suction-generating means behind said dust collecting means inside said housing, and a brush which is slidably mounted to said suction inlet, said bottom surface including protrusions such that, when said cleaner is placed on a flat surface, said brush will be kept above said flat surface, said housing being separable into two mutually connectable sections, said sections comprising at least one pair of bosses, each said pair of bosses being adapted to be fastened to each other by a screw means, said at least one pair of bosses being adapted to form at least one of said protrusions when fastened together.
Claim 2
Dependent Claim
150 words
A portable vacuum cleaner comprising a housing having a front end, back end and a bottom surface, said front end being formed with a suction inlet having an opening, the surface defining said opening being no higher than said bottom surface, a dust collecting means inside said housing, a suction-generating means behind said dust collecting means inside said housing, and a brush which is slidably mounted to said suction inlet, said bottom surface including protrusions such that, when said cleaner is placed on a flat surface, said brush will be kept above said flat surface, said housing being separable into two mutually connectable sections, said sections comprising at least one pair of bosses, each said pair of bosses being adapted to be fastened to each other by a screw means, said at least one pair of bosses being adapted to form at least one of said protrusions when fastened together.
Claim 3
Dependent Claim
156 words
A portable vacuum cleaner comprising a housing having a front end, a back end and a bottom surface, said front end being formed with a suction inlet having an opening, the surface defining said opening being no higher than said bottom surface, said suction inlet comprising a brush which protrudes below said below surface of said housing, a dust collecting means inside said housing, and a suction-generating means behind said dust collecting means inside said housing, said bottom surface including protrusions such that, when said cleaner is placed on a flat surface, said brush will be kept above said flat surface, said housing being separable into two mutually connectable sections, said sections comprising at least one pair of bosses, each said pair of bosses being adapted to be fastened to each other by a screw means, said at least one pair of bosses being adapted to form at least one of said protrusions when fastened together.
Claim 4
Dependent Claim
156 words
A portable vacuum cleaner comprising a housing having a front end, a back end and a bottom surface, said front end being formed with a suction inlet having an opening, the surface defining said opening being no higher than said bottom surface, said suction inlet comprising a brush which protrudes below said below surface of said housing, a dust collecting means inside said housing, and a suction-generating means behind said dust collecting means inside said housing, said bottom surface including protrusions such that, when said cleaner is placed on a flat surface, said brush will be kept above said flat surface, said housing being separable into two mutually connectable sections, said sections comprising at least one pair of bosses, each said pair of bosses being adapted to be fastened to each other by a screw means, said at least one pair of bosses being adapted to form at least one of said protrusions when fastened together.
Claim 5
Dependent Claim
113 words
A portable vacuum cleaner comprising a housing with a dust collecting section unistructurally formed therewith, said dust collecting section having an open front surface, a front cover which is detachably attachable to said housing to thereby cover said open front surface of said dust collecting section, and a filter bag which is disposed inside said dust collecting section, said housing having a groove formed thereon near said open front surface, said front cover having formed thereon a clamping means which is engageable with said groove on said housing as said front cover is attached to said housing to thereby clamp a part of said filter bag between said front cover and said housing.
Claim 6
Dependent Claim
113 words
A portable vacuum cleaner comprising a housing with a dust collecting section unistructurally formed therewith, said dust collecting section having an open front surface, a front cover which is detachably attachable to said housing to thereby cover said open front surface of said dust collecting section, and a filter bag which is disposed inside said dust collecting section, said housing having a groove formed thereon near said open front surface, said front cover having formed thereon a clamping means which is engageable with said groove on said housing as said front cover is attached to said housing to thereby clamp a part of said filter bag between said front cover and said housing.
Claim 7
Dependent Claim
31 words
The vacuum cleaner of claim 3 wherein said front cover includes an inlet for collecting dust particles therethrough and an oulet for delivering collected dust particles into said dust collecting section.
References Cited (Backward Citations)
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Cited
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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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |