Patent US4809394A successfully refreshed from Google Patents.
US4809394A
Expired / Lapsed
US
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Vacuum cleaner having a blower facility structure
Assignee: Hitachi Ltd
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Filing: 1987-08-31
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Granted: 1989-03-07
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Expires: 2007-08-31
Abstract
Abstract A vacuum cleaner with panel portion structure which includes an improved panel main body and a blower facility valve body. The panel main body has an exhaust air port and an opening for a blower facility. The blower facility valve body is provided at a lower side of the panel main body and is rotatably supported so as to normally shut the blower facility opening. A first exhaust air passage is formed between the intermediate exhaust air port to the main body exhaust air port. A second exhaust air passage is formed between the intermediate exhaust air port to the blower facility opening. The first exhaust air passage and the second exhaust air passage are changed over by the blower facility valve body. The improved blower facility structure permits the development of a series of vacuum cleaners with and without a blower facility.
Inventors
- 👤 Hisao Suka
- 👤 Akira Iwao
- 👤 Kazuhiro Kubota
- 👤 Yoshitaro Ishii
- 👤 Masao Sunagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:00
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/0072
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A vacuum cleaner comprising, a main body case having a motor driven blower mechanism and a cord reel mechanism therein, a dust case having a dust collector apparatus therein, and a panel portion structure provided on said main body case, wherein said panel portion structure including a panel main body member and a blower facility valve body member, said panel main body member has a main body exhaust air port and an opening for a blower facility, said blower facility valve body member is provided at a lower side of said panel main body member and is pivotally supported so as to normally close said blower faiclity opening, a first exhaust air passage is formed from an exhaust air passage from said motor driven blower mechanism to said main body exhaust air port, a second exhaust air passage is formed from said exhaust air passage from said motor driven blower mechanism to said blower facility opening, and said blower facility valve body member is operable to change over from said first exhaust air passage to said second exhaust air passage.
Claim 2
Dependent Claim
180 words
A vacuum cleaner comprising, a main body case having a motor driven blower mechanism and a cord reel mechanism therein, a dust case having a dust collector apparatus therein, and a panel portion structure provided on said main body case, wherein said panel portion structure including a panel main body member and a blower facility valve body member, said panel main body member has a main body exhaust air port and an opening for a blower facility, said blower facility valve body member is provided at a lower side of said panel main body member and is pivotally supported so as to normally close said blower faiclity opening, a first exhaust air passage is formed from an exhaust air passage from said motor driven blower mechanism to said main body exhaust air port, a second exhaust air passage is formed from said exhaust air passage from said motor driven blower mechanism to said blower facility opening, and said blower facility valve body member is operable to change over from said first exhaust air passage to said second exhaust air passage.
Claim 3
Dependent Claim
207 words
A vacuum cleaner comprising, a main body case having a motor driven blower mechanism and a cord reel mechanism therein, a dust case having a dust collector apparatus therein, and a panel portion structure provided on said main body case, wherein a partition wall portion having an intermediate exhaust air port, said intermediate exhaust air port is provided at an intermediate portion of an exhaust air passage from said motor driven blower mechanism, said panel portion structure includes a panel main body member and a blower facility valve body member, said panel main body member has a main body exhaust air port and an opening for a blower facility, said blower facility valve body member is provided at a lower side of said panel main body member and supported rotatably so as to normally close said blower facility opening of said panel main body member, a first exhaust air passage is formed from said intermediate exhaust air port to said main body exhaust air port, a second exhaust air passage is formed from said intermediate exhaust air port to said blower facility opening, and said blower facility valve body member is operable to change over from said first exhaust air passage to said second exhaust air passage.
Claim 4
Dependent Claim
207 words
A vacuum cleaner comprising, a main body case having a motor driven blower mechanism and a cord reel mechanism therein, a dust case having a dust collector apparatus therein, and a panel portion structure provided on said main body case, wherein a partition wall portion having an intermediate exhaust air port, said intermediate exhaust air port is provided at an intermediate portion of an exhaust air passage from said motor driven blower mechanism, said panel portion structure includes a panel main body member and a blower facility valve body member, said panel main body member has a main body exhaust air port and an opening for a blower facility, said blower facility valve body member is provided at a lower side of said panel main body member and supported rotatably so as to normally close said blower facility opening of said panel main body member, a first exhaust air passage is formed from said intermediate exhaust air port to said main body exhaust air port, a second exhaust air passage is formed from said intermediate exhaust air port to said blower facility opening, and said blower facility valve body member is operable to change over from said first exhaust air passage to said second exhaust air passage.
Claim 5
Dependent Claim
17 words
A vacuum cleaner according to claim 2, wherein said intermediate exhaust air port has a lattice-like form.
Claim 6
Dependent Claim
33 words
A vacuum cleaner according to claim 3, wherein an opening area of said intermediate exhaust air port of lattice-like form is smaller than an opening area of said main body exhaust air port.
Claim 7
Dependent Claim
23 words
A vacuum cleaner according to claim 3, wherein a filter member is provided at a lower portion of said intermediate exhaust air port.
Claim 8
Dependent Claim
24 words
A vacuum cleaner according to claim 3, wherein said blower facility opening is provided at a central portion of said panel main body member.
Claim 9
Dependent Claim
25 words
A vacuum cleaner according to claim 3, wherein a power source switch portion is provided at a side portion of said panel main body member.
Claim 10
Dependent Claim
27 words
A vacuum cleaner according to claim 3, wherein an opening for a cord reel pedal is provided at a side portion of said panel main body member.
Claim 11
Dependent Claim
69 words
A vacuum cleaner according to claim 2, wherein said blower facility valve body member is provided on a valve body supporting member, said valve body supporting member is rotatably supported at a lower side of said panel main body member, and spring means is associated with said blower facility valve body member for normally pressing said member toward said blower facility opening to a closed state of the opening.
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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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |