US4523936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation-chamber means
Assignee: Individual
•
Filing: 1984-07-25
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Granted: 1985-06-18
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Expires: 2004-07-25
Abstract
Abstract The invention comprises a negative-pressure plastic bag leader in the form of a cylindrical chamber into which the plastic bag is received. The chamber is double-walled, an outer wall being imperforate, and the inner wall being foraminous, and the two being spaced apart, in a substantial concentricity, to define an annular void therebetween. A closure caps the upper, open end of the chamber, and has a conduit in traverse thereof through which to admit gas, and refuse suspended in such gas into the chamber. Further, the closure has an aperture formed therethrough for communicating with a source of negative pressure, and for extracting gas from the chamber. The aperture opens into the chamber and also into the annular void. Accordingly, both the chamber and the annular void experience the same negative pressure, and the plastic, refuse-collecting bag is held securely in place against the inner wall of the chamber. Additionally, the chamber walls and the closure hold the uppermost end of the bag in position, and cooperate with the end of the bag to seal the chamber fully circumferentially thereof.
Inventors
- 👤 William G. Disanza, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:02
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1418; B; B01; B01D; B01D45/00; B01D45/18; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
163 words
Separation-chamber means, for use in a negative-pressure, collection system, for collecting refuse, such as debris, particulate matter, and the like, comprising: means defining a chamber in which to collect refuse; said chamber having an imperforate outer wall and a foraminous inner wall; said walls being generally concentric defining an annular void therebetween; a separation-collection area formed within said foraminous inner wall; means for (a) admitting gas, and refuse suspended in such gas, into said separation-collection area, and for (b) discharging gas from said separation-collection area; wherein said outer wall has a bottom and an open top; said admitting and discharging means comprises means for admitting gas into said separation-collection area, as aforesaid, through said open top, and means for discharging gas from said separation-collection area, as aforesaid, also through said open top; and said discharging means comprises port means opening externally of said separation-collection area, and opening internally and commonly, onto both said separation-collection area and said annular void, through said open top.
Claim 2
Dependent Claim
163 words
Separation-chamber means, for use in a negative-pressure, collection system, for collecting refuse, such as debris, particulate matter, and the like, comprising: means defining a chamber in which to collect refuse; said chamber having an imperforate outer wall and a foraminous inner wall; said walls being generally concentric defining an annular void therebetween; a separation-collection area formed within said foraminous inner wall; means for (a) admitting gas, and refuse suspended in such gas, into said separation-collection area, and for (b) discharging gas from said separation-collection area; wherein said outer wall has a bottom and an open top; said admitting and discharging means comprises means for admitting gas into said separation-collection area, as aforesaid, through said open top, and means for discharging gas from said separation-collection area, as aforesaid, also through said open top; and said discharging means comprises port means opening externally of said separation-collection area, and opening internally and commonly, onto both said separation-collection area and said annular void, through said open top.
Claim 3
Dependent Claim
57 words
Separation-chamber means, according to claim 1, wherein: said inner wall has a base joined thereto, said base also being foraminous; said outer wall bottom also being imperforate; said base and bottom are set apart from each other in a general parallelism, defining a space therebetween; and said space and said annular void are in open, common communication.
Claim 4
Dependent Claim
59 words
Separation-chamber means, according to claim 1, wherein: said annular void has a given, annular width; said chamber-engageable means comprises a closure for said chamber; said closure has a peripheral channel formed by concentric, substantially parallel ribs; and said ribs and said channel together comprise a prescribed annular width which substantially corresponds to said given, annular width of said void.
Claim 5
Dependent Claim
46 words
Separation-chamber means, according to claim 1, wherein: said chamber-engageable means comprises a closure for said chamber; said closure has an outermost peripheral wall; and said outermost peripheral wall has a shoulder formed therein for effecting an abutting engagement thereof with said outer wall of said chamber.
Claim 6
Dependent Claim
26 words
Separation-chamber means, according to claim 1, wherein: said chamber-engageable means comprises a conduit for admitting gas and refuse suspended in such gas therethrough into said chamber.
Claim 7
Dependent Claim
49 words
Separation-chamber means, according to claim 1, wherein: said chamber-engageable means comprises a closure; said closure has a through-going aperture formed therein; and said aperture is disposed for communicating with both said area within said chamber and said annular void, upon said closure being set into engagement with said chamber.
Claim 8
Dependent Claim
34 words
Separation-chamber means, according to claim 3, wherein: one of said ribs, and one of said chamber walls, together comprise means for clasping therebetween, and retaining, the uppermost open end of a refuse collection container.
Claim 9
Dependent Claim
37 words
Separation-chamber means, according to claim 3, wherein: one of said ribs and one of said chamber walls comprise means cooperative with the uppermost open end of a refuse collection container for sealing said chamber fully circumferentially thereof.
References Cited (Backward Citations)
US2892511A
Cited
US3320727A
Cited
US3653190A
Cited
US3740933A
Cited
US3771664A
Cited
US4133769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |