Patent US3318600A successfully refreshed from Google Patents.
Patent US6141826A successfully refreshed from Google Patents.
US6141826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center air feed for cyclonic separator
Assignee: Omachron Intellectual Property Inc
•
Filing: 1999-01-08
•
Granted: 2000-11-07
•
Expires: 2019-01-08
Abstract
Abstract A cyclonic separation device is provided having improved pressure loss characteristics. A fluid supply conduit in flow communication with an inlet to a cyclone is located and configured to extend longitudinally through a central portion of the cyclone, whereby the sharp bending of the conduit may be reduced, thereby reducing pressure losses in the device, without unduly interfering with the cyclonic flow within the cyclone. The present invention may be adapted for use with cyclonic separation devices of all types, including single- and multi-stage cyclonic separators.
Inventors
- 👤 Wayne Ernest Conrad
- 👤 Helmut Gerhard Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:20
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/16; A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/165; A47L9/1691; B04; B04C; B04C5/00; B04C5/02; B04C5/08; B04C5/103; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
96 words
A vacuum cleaner comprising: (a) a housing; (b) a cyclone removable from the housing and having a bottom, a wall having an inner surface, a longitudinally extending axis and an outlet in communication with a source of suction; (c) a fluid inlet to the at least one cyclone; and, (d) a fluid supply conduit extending along the length of the cyclone from the bottom to the fluid inlet and forming a one-piece assembly therewith and communicating with a dirty air inlet and with fluid inlet, the fluid supply conduit removable with the cyclone from the housing.
Claim 2
Dependent Claim
96 words
A vacuum cleaner comprising: (a) a housing; (b) a cyclone removable from the housing and having a bottom, a wall having an inner surface, a longitudinally extending axis and an outlet in communication with a source of suction; (c) a fluid inlet to the at least one cyclone; and, (d) a fluid supply conduit extending along the length of the cyclone from the bottom to the fluid inlet and forming a one-piece assembly therewith and communicating with a dirty air inlet and with fluid inlet, the fluid supply conduit removable with the cyclone from the housing.
Claim 3
Dependent Claim
18 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit extends longitudinally through the cyclone.
Claim 4
Dependent Claim
21 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit extends coaxially with the axis of the cyclone.
Claim 5
Dependent Claim
25 words
The vacuum cleaner as claimed in claim 1 wherein the cyclone has a central portion and the fluid supply conduit extends through the central portion.
Claim 6
Dependent Claim
31 words
The vacuum cleaner as claimed in claim 4 wherein the fluid supply conduit comprises an exit portion which extends within the cyclone from the central portion outwardly towards the inner surface.
Claim 7
Dependent Claim
16 words
The vacuum cleaner as claimed in claim 5 wherein the exit portion includes a curved portion.
Claim 8
Dependent Claim
15 words
The vacuum cleaner as claimed in claim 6 wherein the exit portion extends substantially horizontally.
Claim 9
Dependent Claim
27 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit comprises an exit portion which is configured to direct fluid tangentially into the cyclone.
Claim 10
Dependent Claim
35 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit comprises an exit portion which is curved to at least assist in directing fluid tangentially into the cyclone through the fluid inlet.
Claim 11
Dependent Claim
51 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit comprises a longitudinally extending portion and an exit portion which extends within the cyclone from the longitudinally extending portion outwardly towards the inner surface, the longitudinally extending portion having a curved portion which merges with the exit portion.
Claim 12
Dependent Claim
30 words
The vacuum cleaner as claimed in claim 10 wherein the exit portion is curved to at least assist in directing the fluid tangentially into the cyclone through the fluid inlet.
Claim 13
Dependent Claim
44 words
The vacuum cleaner as claimed in claim 1 wherein the cyclone has an outlet having a portion which is removable with the cyclone and one of the portion of the outlet and the portion of the fluid supply conduit is nested within the other.
Claim 14
Dependent Claim
22 words
The vacuum cleaner as claimed in claim 1 wherein the the fluid supply conduit is integrally formed as part of the cyclone.
Claim 15
Dependent Claim
79 words
The vacuum cleaner as claimed in claim 1 wherein the fluid supply conduit comprises (1) an upstream portion in air flow communication with the source of dirty air which is positioned exterior to the cyclone and (2) a downstream portion which extends longitudinally through the cyclone and the downstream portion is in air flow communication with the upstream portion when the cyclone is mounted in the housing and the downstream portion is removable with the cyclone from the housing.
Claim 16
Dependent Claim
67 words
A vacuum cleaner comprising: (a) a cleaning head for cleaning a surface; (b) a cyclone having a wall having an inner surface, a longitudinally axis and an outlet in communication with a source of suction; (c) a fluid inlet to the cyclone; and (d) a fluid supply conduit communicating with the cleaning head and with the fluid inlet, the fluid supply conduit extending longitudinally through the cyclone.
Claim 17
Dependent Claim
67 words
A vacuum cleaner comprising: (a) a cleaning head for cleaning a surface; (b) a cyclone having a wall having an inner surface, a longitudinally axis and an outlet in communication with a source of suction; (c) a fluid inlet to the cyclone; and (d) a fluid supply conduit communicating with the cleaning head and with the fluid inlet, the fluid supply conduit extending longitudinally through the cyclone.
Claim 18
Dependent Claim
21 words
The vacuum cleaner as claimed in claim 15 wherein the fluid supply conduit extends through a central portion of the cyclone.
Claim 19
Dependent Claim
31 words
The vacuum cleaner as claimed in claim 16 wherein the fluid supply conduit comprises an exit portion which extends within the cyclone from the central portion outwardly towards the inner surface.
Claim 20
Dependent Claim
30 words
The vacuum cleaner as claimed in claim 17 wherein at least one of the fluid inlet and the exit portion are configured to direct the fluid tangentially into the cyclone.
Claim 21
Dependent Claim
16 words
The vacuum cleaner as claimed in claim 17 wherein the exit portion includes a curved portion.
Claim 22
Dependent Claim
15 words
The vacuum cleaner as claimed in claim 19 wherein the exit portion extends substantially horizontally.
Claim 23
Dependent Claim
36 words
The vacuum cleaner as claimed in claim 16 wherein the fluid supply conduit comprises an exit portion which is curved to at least assist in directing the fluid tangentially into the cyclone through the fluid inlet.
Claim 24
Dependent Claim
21 words
The vacuum cleaner as claimed in claim 15 wherein the fluid supply conduit extends coaxially with the axis of the cyclone.
Claim 25
Dependent Claim
51 words
The vacuum cleaner as claimed in claim 15 wherein the fluid supply conduit comprises a longitudinally extending portion and an exit portion which extends through the cyclone from the longitudinally extending portion outwardly towards the inner surface, the longitudinally extending portion having a curved portion which merges with the exit portion.
Claim 26
Dependent Claim
30 words
The vacuum cleaner as claimed in claim 23 wherein the exit portion is curved to at least assist in directing the fluid tangentially into the cyclone through the fluid inlet.
References Cited (Backward Citations)
US32257A
Cited
US450372A
Cited
US1897144A
Cited
CA54488A
Cited
US883413A
Cited
US1023082A
Cited
US1127896A
Cited
US1369939A
Cited
US1826798A
Cited
US1759947A
Cited
US1798510A
Cited
US1752231A
Cited
DK52195C
Cited
US2014287A
Cited
US2171248A
Cited
US2143421A
Cited
US2392872A
Cited
US2397872A
Cited
US2397980A
Cited
DK69708C
Cited
US2405625A
Cited
US2402845A
Cited
US2608268A
Cited
US2681124A
Cited
GB762070A
Cited
US2822060A
Cited
US2993223A
Cited
SU148023A1
Cited
US3235090A
Cited
US3283480A
Cited
US3200568A
Cited
US3320727A
Cited
US3425192A
Cited
US3501014A
Cited
US3535854A
Cited
US3853518A
Cited
US3877902A
Cited
US3925045A
Cited
US3955236A
Cited
US4005998A
Cited
US4141698A
Cited
US4172710A
Cited
US4198290A
Cited
US4162149A
Cited
US4162149B1
Cited
US4251368A
Cited
US4373228A
Cited
US4251241A
Cited
US4268288A
Cited
US4390426A
Cited
US4398928A
Cited
USRE32257E
Cited
US4377882A
Cited
US4326862A
Cited
US4826515A
Cited
US4853011A
Cited
US4593429A
Cited
US5160356A
Cited
US4345572A
Cited
US4352681A
Cited
US4443234A
Cited
SU1042812A1
Cited
US4588423A
Cited
US4571772A
Cited
US4573236A
Cited
US4756729A
Cited
US4643748A
Cited
US5101532A
Cited
USD305269S
Cited
US4853008A
Cited
US5254147A
Cited
US5078761A
Cited
US5062870A
Cited
US5090976A
Cited
US5145499A
Cited
USD343707S
Cited
US5267371A
Cited
US5307538A
Cited
US5350432A
Cited
US5558697A
Cited
CA2104136A1
Cited
US5755007A
Cited
US5591253A
Cited
USD382679S
Cited
US5779745A
Cited
WO1998002080A1
Cited
US5950274A
Cited
WO1998010691A1
Cited
WO1998023381A1
Cited
US5935279A
Cited
WO1998027857A1
Cited
WO1998033424A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-07 | 2004-05-08 | 2004-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-07 | 2008-05-08 | 2008-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-07 | 2012-05-08 | 2012-11-07 | $7700.00 | Window Closed / Lapsed |