US4712740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi spray nozzle for a cleaning device
Assignee: Oreck Holdings LLC
•
Filing: 1986-03-17
•
Granted: 1987-12-15
•
Expires: 2006-03-17
Abstract
Abstract A venturi spray nozzle having a cleaning fluid manifold with a plurality of fingers extending into a plurality of venturi nozzle channels of an air manifold such that the air manifold educes cleaning fluid from the cleaning fluid manifold and projects it on a surface to be cleaned. The cleaning fluid manifold is centrally positioned in the air manifold and a pressurized source of cleaning fluid is used.
Inventors
- 👤 L. Scot Duncan
- 👤 Hugh F. Groth
- 👤 John M. Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:01
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/34; A47L11/4036; A47L11/4044; A47L11/4083
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
A cleaning device comprising: a source of cleaning fluid; a source of pressurized air; spray means connected to said fluid and air sources for educing fluid from said fluid source using said pressurized air and forcibly spraying said fluid onto a surface to be cleaned; said spray means including an air manifold provided by and internally of a housing which is open at one end and which is connected to said air source to pressurize said housing, said housing having separate, interconnected top and bottom walls and having a plurality of nozzle channels extending from said air manifold and formed by constrictions in at least one of said walls of said housing, said constrictions extending inwardly into said manifold from said open one end of said housing; and a fluid manifold connected to said fluid source and having a plurality of fingers extending therefrom, each finger being positioned in a respective nozzle channel so that pressurized air flowing through said channels educes fluid from said fingers.
Claim 2
Dependent Claim
166 words
A cleaning device comprising: a source of cleaning fluid; a source of pressurized air; spray means connected to said fluid and air sources for educing fluid from said fluid source using said pressurized air and forcibly spraying said fluid onto a surface to be cleaned; said spray means including an air manifold provided by and internally of a housing which is open at one end and which is connected to said air source to pressurize said housing, said housing having separate, interconnected top and bottom walls and having a plurality of nozzle channels extending from said air manifold and formed by constrictions in at least one of said walls of said housing, said constrictions extending inwardly into said manifold from said open one end of said housing; and a fluid manifold connected to said fluid source and having a plurality of fingers extending therefrom, each finger being positioned in a respective nozzle channel so that pressurized air flowing through said channels educes fluid from said fingers.
Claim 3
Dependent Claim
24 words
A cleaning device according to claim 1 wherein the axis of said nozzle channels are positioned relative to each other in a fan shape.
Claim 4
Dependent Claim
23 words
A cleaning device according to claim 2 wherein the axis of said fingers are positioned relative to each other in a fan shape.
Claim 5
Dependent Claim
15 words
A cleaning device according to claim 3 wherein said fluid manifold housing is fan shaped.
Claim 6
Dependent Claim
17 words
A cleaning device according to claim 1 wherein said fluid manifold is mounted within said air manifold.
Claim 7
Dependent Claim
39 words
A cleaning device according to claim 5 wherein said air manifold includes supports to position said fluid manifold housing centrally in said air manifold housing and said fingers extend cantilevered from said air manifold housing into said nozzle channels.
Claim 8
Dependent Claim
19 words
A cleaning device according to claim 6 wherein said nozzle channel includes supports to position said fingers centrally therein.
Claim 9
Dependent Claim
33 words
A cleaning device according to claim 5 wherein said air manifold housing includes two complementary body portions mating along a plane including the axis of said nozzle channels to provide a unitary structure.
Claim 10
Dependent Claim
24 words
A cleaning device according to claim 5 including an air conduit integral with said air manifold housing and connected to said pressurized air source.
Claim 11
Dependent Claim
38 words
A cleaning device according to claim 5 wherein said source of pressurized air is also connected to said cleaning fluid source at lower air pressure than said manifold to pressurize said cleaning fluid source and said fluid manifold.
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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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |