US4731101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector
Assignee: Individual
•
Filing: 1986-10-10
•
Granted: 1988-03-15
•
Expires: 2006-10-10
Abstract
Abstract A cyclone dust collector is comprised of a lower dust chamber (5) having a tangential air inlet (10) and an upper dust chamber (4) in combination with a suction device. A dividing plate separates the upper and lower dust chambers from one another. A communicating duct (2) is installed in the dividing plate (3) in such a manner to extend downward into the lower dust chamber (5), and a cyclone drum (15) is supported in such a manner to enclose the dust (2). A disk (17) is supported to vertically divide the inside of the drum (15) into a pair of upper and lower parts. The air introduced into the lower dust chamber (5) is caused to flow in a swirl in the cyclone drum (15), the dust particles in the air are separated by centrifugalization to be allowed to drop along the inside wall of the drum (15) and the separated dust particles fall onto the bottom of the cyclone drum (15) without being affected by the swirling flow.
Inventors
- 👤 Kinzo Kanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:24
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1658; A47L9/1666; B; B01; B01D; B01D45/00; B01D45/12; B01D50/00; B01D50/20; B04; B04C; B04C5/00; B04C5/08; B04C5/10; B04C7/00; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
234 words
A cyclone dust collector comprising: an airtight shell; a horizontal dividing plate mounted in said shell and dividing the interior of said shell into upper and lower dust chambers; suction means communicating with said upper dust chamber; a communicating duct extending downward into said lower chamber from said dividing plate and comprising means for providing air flow communication between said upper and lower chambers; tangential air inlet means in said lower chamber, whereby said suction means can cause dust laden air to enter said lower chamber through said air inlet means and form a cyclone flow therein; a cyclone drum in said lower chamber and having a circumferential surface, an unrestricted open top end and a closed bottom end; means for supporting said cyclone drum in said lower chamber such that an air gap is formed between said plate and an edge of said circumferential surface at said open top end, said air gap being dimensioned such that swirling air entering said cyclone drum therethrough is accelerated at said air gap, and such that a bottom of said communicating duct extends into said cyclone drum; and a horizontal disc supported in said cyclone drum between said bottom of said communicating duct and said bottom end of said cyclone drum, whereby said cyclone drum is vertically divided into two chambers, a lower one of which is isolated from swirling air in an upper one thereof.
Claim 2
Dependent Claim
234 words
A cyclone dust collector comprising: an airtight shell; a horizontal dividing plate mounted in said shell and dividing the interior of said shell into upper and lower dust chambers; suction means communicating with said upper dust chamber; a communicating duct extending downward into said lower chamber from said dividing plate and comprising means for providing air flow communication between said upper and lower chambers; tangential air inlet means in said lower chamber, whereby said suction means can cause dust laden air to enter said lower chamber through said air inlet means and form a cyclone flow therein; a cyclone drum in said lower chamber and having a circumferential surface, an unrestricted open top end and a closed bottom end; means for supporting said cyclone drum in said lower chamber such that an air gap is formed between said plate and an edge of said circumferential surface at said open top end, said air gap being dimensioned such that swirling air entering said cyclone drum therethrough is accelerated at said air gap, and such that a bottom of said communicating duct extends into said cyclone drum; and a horizontal disc supported in said cyclone drum between said bottom of said communicating duct and said bottom end of said cyclone drum, whereby said cyclone drum is vertically divided into two chambers, a lower one of which is isolated from swirling air in an upper one thereof.
Claim 3
Dependent Claim
39 words
A dust collector as set forth in claim 1, wherein said supporting means comprises a hanger member extending through said communicating duct and into said lower dust chamber, said cyclone drum and disk being secured on said hanger member.
Claim 4
Dependent Claim
25 words
A dust collector as set forth in claim 1, wherein said supporting means comprises said cyclone drum mounted directly on a bottom of said shell.
Claim 5
Dependent Claim
22 words
A dust collector as set forth in claim 1 including a cylindrical filter member enclosing said circumferential surface of said cyclone drum.
Claim 6
Dependent Claim
27 words
A dust collector as set forth in claim 1 including a filter member in said upper chamber, said filter member being upward spread opposite said suction means.
Claim 7
Dependent Claim
32 words
A dust collector as set forth in claim 5, wherein said filter member is loosely fixed in said upper dust chamber and is equipped with a weight attached to the center thereof.
Claim 8
Dependent Claim
48 words
A dust collector as set forth in claim 5, wherein said filter member is loosely fixed in said upper dust chamber and is supprted against a rigid frame that extends downward in such a manner to enclose said suction means, when suction is developed by said suction means.
Claim 9
Dependent Claim
16 words
A dust collector as set forth in claim 1, wherein said shell has a removable bottom.
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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) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |