Patent US1814983A successfully refreshed from Google Patents.
US4426211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner with dust disposal
Assignee: Sharp Corp
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Filing: 1981-12-16
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Granted: 1984-01-17
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Expires: 2001-12-16
Abstract
Abstract According to the present invention, there is provided a vacuum cleaner which comprises a dust collector detachably installed in a main body of the cleaner. A primary filter composed of a horizontal wall and a vertical wall is disposed within the dust collector. Both the horizontal and vertical walls are permeable to air and include a dust filter. A secondary filter is disposed behind the vertical wall of the primary filter. A first path for dust is defined btween the horizontal wall of the primary filter and the bottom of the body and merged into a second path developed between the vertical wall of the primary filter and the second filter. Preferably, the horizontal and vertical walls of the primary filter include a coarse mesh for trapping relatively large dust and the secondary filter includes a fine mesh for trapping relatively small dust which has passed through the primary filter. A lid is provided on the side of the primary filter opposite the vertical wall for discharging dust accumulated on said primary and secondary filters.
Inventors
- 👤 Yasukazu Ataka
- 👤 Katuzi Ikezaki
- 👤 Katsuhiko Umeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:25
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1409; A47L9/20; B; B01; B01D; B01D46/00; B01D46/10; B01D46/12; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
367 words
A detachable dust collector for use with a vacuum cleaner having a main body including an inlet opening and an outlet opening with an electric fan being operatively positioned therebetween, said dust collector comprising: a housing having a top, bottom and two side walls adapted to be removably disposed within said main body and operatively positioned between said inlet opening and said electric fan; primary filter means for trapping dust and objects of a predetermined size being operatively positioned within said housing; said primary filter means including a horizontal wall extending from one side wall to the other side wall and a vertical wall being spaced from said bottom wall of said housing and extending from said top wall to said horizontal wall to define a dust collection chamber adapted to be in communication with said inlet opening and a first path being positioned between said horizontal wall of said primary filter means, said two side walls and said bottom wall of said housing; secondary filter means for trapping dust and objects of a predetermined size being operatively positioned within said housing downstream of said primary filter means, said secondary filter means being spaced from said vertical wall to define a second path being in communication with said first path; said secondary filter means extending between said top, bottom and both side walls of said housing to form an air permeable end closure for said housing; and a movable lid being operatively positioned on an open front of said housing and being hinged about said top wall for forming a closure thereto, said lid including an opening adapted to be in communication with said inlet opening and said dust collection chamber and said lid being in engagement with said horizontal wall of said primary filter means and said bottom wall for closing the front of said dust collection chamber and said first path; wherein detaching said dust collector from said vacuum cleaner and moving said lid to an open position permits dust and objects to be discharged in a single tilting action from said dust collection chamber of said primary filter means and from said first and second paths being in communication with said secondary filter means.
Claim 2
Dependent Claim
367 words
A detachable dust collector for use with a vacuum cleaner having a main body including an inlet opening and an outlet opening with an electric fan being operatively positioned therebetween, said dust collector comprising: a housing having a top, bottom and two side walls adapted to be removably disposed within said main body and operatively positioned between said inlet opening and said electric fan; primary filter means for trapping dust and objects of a predetermined size being operatively positioned within said housing; said primary filter means including a horizontal wall extending from one side wall to the other side wall and a vertical wall being spaced from said bottom wall of said housing and extending from said top wall to said horizontal wall to define a dust collection chamber adapted to be in communication with said inlet opening and a first path being positioned between said horizontal wall of said primary filter means, said two side walls and said bottom wall of said housing; secondary filter means for trapping dust and objects of a predetermined size being operatively positioned within said housing downstream of said primary filter means, said secondary filter means being spaced from said vertical wall to define a second path being in communication with said first path; said secondary filter means extending between said top, bottom and both side walls of said housing to form an air permeable end closure for said housing; and a movable lid being operatively positioned on an open front of said housing and being hinged about said top wall for forming a closure thereto, said lid including an opening adapted to be in communication with said inlet opening and said dust collection chamber and said lid being in engagement with said horizontal wall of said primary filter means and said bottom wall for closing the front of said dust collection chamber and said first path; wherein detaching said dust collector from said vacuum cleaner and moving said lid to an open position permits dust and objects to be discharged in a single tilting action from said dust collection chamber of said primary filter means and from said first and second paths being in communication with said secondary filter means.
Claim 3
Dependent Claim
52 words
A detachable dust collector as set forth in claim 1 wherein the horizontal and vertical walls of the primary filter means include a coarse mesh for catching relatively large dust and the secondary filter means includes a fine mesh for catching relatively small dust which has passed through said primary filter means.
Claim 4
Dependent Claim
25 words
A detachable dust collector according to claim 1, wherein said housing includes a handle for aiding in the removal and emptying of said dust collector.
Claim 5
Dependent Claim
48 words
A detachable dust collector according to claim 1, and further including a slide operatively positioned adjacent to said vertical wall of said primary filter means and reciprocating means for imparting motion to said slide for dislodging dust particles accumulated on said vertical wall of said primary filter means.
Claim 6
Dependent Claim
88 words
A detachable dust collector according to claim 4, wherein said reciprocating means includes a top plate, standing studs affixed thereto and spring means, said standing studs projecting through said top wall and being affixed to said slide, said spring means being operatively positioned between said top plate and said top wall of said housing, wherein imparting a manual force to said top plate reciprocates said slide relative to said vertical wall and said spring means returning said slide to a first position when said manual force is released.
Claim 7
Dependent Claim
32 words
A detachable dust collector according to claim 1, wherein said lid further includes a hook disposed adjacent a lower end thereof for retaining said lid on said bottom wall of said housing.
Claim 8
Dependent Claim
69 words
A detachable dust collector according to claim 1, further including a shaft and at least one leaf spring, said leaf spring being affixed at one end to the top wall of said housing, said shaft being operatively positioned on the other end of said leaf spring, said lid being rotatably mounted to said shaft and said lid and shaft being positioned on said leaf spring for limited vertical movement.
Claim 9
Dependent Claim
36 words
A detachable dust collector according to claim 7, and further including a coil spring disposed around said shaft and operatively positioned between said lid and said top wall for closing said lid relative to said housing.
Claim 10
Dependent Claim
38 words
A detachable dust collector according to claim 8, and further including an actuator means operatively connected to said lid and said top wall of said housing for selectively permitting said lid to be opened relative to said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |