US5266004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Hitachi Ltd
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Filing: 1991-03-18
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Granted: 1993-11-30
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Expires: 2011-03-18
Abstract
Abstract A blower having a base, a main body which has an air inlet opening and an air blowing opening and which is rotatably mounted on a base, a fan disposed in the main body to make air entering the main body through the air inlet opening flow out of the main body through the air blowing opening, a motor for rotating the fan, an automatic rotation mechanism for rotating the main body through 360° or more relative to the base, and an automatic oscillation mechanism for changing over the normal-direction and reverse-direction rotations of the main body on the base in a predetermined angular range.
Inventors
- 👤 Yasuo Tsumurai
- 👤 Seiichi Kawauchi
- 👤 Masato Saitoh
- 👤 Shiyuji Abiko
- 👤 Kazuharu Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:35
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/10; F04D17/00; F04D17/02; F04D17/04; F04D29/00; F04D29/70; F04D29/701; F04D29/703
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
183 words
A blower comprising: a base; a main body mounted on said base so as to be rotatable relative to said base; an air inlet opening formed in said main body; an air blowing opening formed in said main body; a fan disposed in said main body, said fan causing air entering said main body through said air inlet opening flow out of said main body through said air blowing opening; a motor for rotating said fan; a first filter of a rough mesh capable of covering an outer circumferential surface surrounding said air inlet opening; a second fine filter of a fine mesh disposed between said first filter and said air inlet opening; rotation means for rotating said main body through an angle of 360° or more relative to said base; and oscillation means for changing over the normal-direction and reverse-direction rotations of said main body on said base in a predetermined angular range; and selection means for selecting one of an operation of separately driving one of said rotation means and said oscillation means and an operation of driving both said means.
Claim 2
Dependent Claim
183 words
A blower comprising: a base; a main body mounted on said base so as to be rotatable relative to said base; an air inlet opening formed in said main body; an air blowing opening formed in said main body; a fan disposed in said main body, said fan causing air entering said main body through said air inlet opening flow out of said main body through said air blowing opening; a motor for rotating said fan; a first filter of a rough mesh capable of covering an outer circumferential surface surrounding said air inlet opening; a second fine filter of a fine mesh disposed between said first filter and said air inlet opening; rotation means for rotating said main body through an angle of 360° or more relative to said base; and oscillation means for changing over the normal-direction and reverse-direction rotations of said main body on said base in a predetermined angular range; and selection means for selecting one of an operation of separately driving one of said rotation means and said oscillation means and an operation of driving both said means.
Claim 3
Dependent Claim
146 words
A blower having a base, a main body mounted on said base so as to be rotatable relative to said base, an air inlet opening formed in said main body, an air blowing opening formed in said main body, a fan disposed in said main body and serving to cause air entering said main body through said air inlet opening to flow out of said main body through said air blowing opening, a motor for rotating said fan, rotation means for rotating said main body through 360° or more relative to said base, and oscillation means for changing over the normal-direction and reverse-direction rotations of said main body on said base in a predetermined angular range, and selection means for selecting one of an operation of separately driving one of said rotation means and said oscillation means and an operation of driving both of said means.
Claim 4
Dependent Claim
146 words
A blower having a base, a main body mounted on said base so as to be rotatable relative to said base, an air inlet opening formed in said main body, an air blowing opening formed in said main body, a fan disposed in said main body and serving to cause air entering said main body through said air inlet opening to flow out of said main body through said air blowing opening, a motor for rotating said fan, rotation means for rotating said main body through 360° or more relative to said base, and oscillation means for changing over the normal-direction and reverse-direction rotations of said main body on said base in a predetermined angular range, and selection means for selecting one of an operation of separately driving one of said rotation means and said oscillation means and an operation of driving both of said means.
Claim 5
Dependent Claim
77 words
A blower comprising a main body incorporating a fan and a motor for driving said fan, and a base on which said main body is rotatably mounted, wherein said main body is arranged to effect a rotation operation through an angle of 360° relative to said base, and an oscillation operation relative to said base in a normal or a reverse direction in a predetermined angular range, or an operation which is a combination of said operations.
Claim 6
Dependent Claim
77 words
A blower comprising a main body incorporating a fan and a motor for driving said fan, and a base on which said main body is rotatably mounted, wherein said main body is arranged to effect a rotation operation through an angle of 360° relative to said base, and an oscillation operation relative to said base in a normal or a reverse direction in a predetermined angular range, or an operation which is a combination of said operations.
Claim 7
Dependent Claim
143 words
A blower comprising: a base; a main body mounted on said base; an air inlet opening formed in said main body; an air blowing opening formed in said main body; a fan disposed in said main body, said fan causing air entering said main body through said air inlet opening flow out of said main body through said air blowing opening; a motor for rotating said fan; a first filter of a rough mesh capable of covering an outer circumferential surface surrounding said air inlet opening; and a second fine filter of a fine mesh disposed between said first filter and said air inlet opening, wherein said second filter is disposed so as to be movable relative to said main body such that the rate at which air flows into said main body through both said first and second filters is substantially changed.
Claim 8
Dependent Claim
143 words
A blower comprising: a base; a main body mounted on said base; an air inlet opening formed in said main body; an air blowing opening formed in said main body; a fan disposed in said main body, said fan causing air entering said main body through said air inlet opening flow out of said main body through said air blowing opening; a motor for rotating said fan; a first filter of a rough mesh capable of covering an outer circumferential surface surrounding said air inlet opening; and a second fine filter of a fine mesh disposed between said first filter and said air inlet opening, wherein said second filter is disposed so as to be movable relative to said main body such that the rate at which air flows into said main body through both said first and second filters is substantially changed.
Claim 9
Dependent Claim
42 words
A blower according to claim 4, wherein the blower serves as an air cleaner when said second filter is moved so that the rate at which air flows into said main body through both said first and second filters is substantially 100%.
Claim 10
Dependent Claim
42 words
A blower according to claim 4, wherein the blower serves as an electric fan when said second filter is moved so that the rate at which air flows into said main body through both said first and second filters is substantially 0%.
Claim 11
Dependent Claim
49 words
A blower according to claim 4, wherein said second filter is disposed so as to be movable relative to said main body so that the rate at which air flows into said main body through both said first and second filters is continuously changed substantially from 0 to 100%.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |