Patent US3964519A successfully refreshed from Google Patents.
US3964519A
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Fluid velocity equalizing apparatus
Assignee: AIR MONITOR CORP
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Filing: 1974-11-18
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Granted: 1976-06-22
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Expires: 1994-11-18
Abstract
Abstract Apparatus for equalizing the velocity of fluids flowing in duct work and the like which comprises one or more rigid honeycomb sections having a plurality of coaxial passages wherein the ratio of the surface area of each passage to its cross-sectional area is in the order of thirty or greater.
Inventors
- 👤 Kenneth W. De Baun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:25
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
Apparatus for equalizing the velocity of flowing fluid including duct means defining a flowing stream of fluid; at least one open-ended honeycomb equalizing section substantially coaxial with said duct means, intercepting and conducting the fluid therethrough, said honeycomb section having a plurality of parallel passages across substantially the entire duct cross-section wherein the ratio of surface area of each passage to the cross-sectional area of each passage is at least 30.
Claim 2
Dependent Claim
71 words
Apparatus for equalizing the velocity of flowing fluid including duct means defining a flowing stream of fluid; at least one open-ended honeycomb equalizing section substantially coaxial with said duct means, intercepting and conducting the fluid therethrough, said honeycomb section having a plurality of parallel passages across substantially the entire duct cross-section wherein the ratio of surface area of each passage to the cross-sectional area of each passage is at least 30.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein the end of the honeycomb facing the stream of fluid is curved to flatten the velocity profile of the stream.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 further comprising an air straightening honeycomb section preceding the first-mentioned honeycomb section.
Claim 5
Dependent Claim
30 words
The apparatus of claim 3 wherein the ratio of the surface area of each passage of said straightening honeycomb section to its cross-sectional area is in the order of 6.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein the parallel passages are approximately 3 inches in length or greater.
Claim 7
Dependent Claim
22 words
The apparatus of claim 1 wherein the parallel passages are of hexagonal cross-section having dimensions of 3/8 to 3/16 inch across flats.
Claim 8
Dependent Claim
33 words
The apparatus of claim 1 wherein the lengths of said parallel passages vary over the cross-sectional area of said conduit to equalize the fluid flow velocities across the cross-sectional area of said conduit.
Claim 9
Dependent Claim
77 words
Apparatus for equalizing the velocity of flowing fluid including duct means defining a flowing stream of fluid; at least one open-ended honeycomb equalizing section substantially coaxial with said duct means, intercepting and conducting the fluid therethrough, said honeycomb section having a plurality of passages across substantially the entire duct cross-section, said parallel passages having hexagonal cross-sections, each passage being approximately 3 inches in length or greater and having a dimension of 3/8 to 3/16 inch across flats.
Claim 10
Dependent Claim
77 words
Apparatus for equalizing the velocity of flowing fluid including duct means defining a flowing stream of fluid; at least one open-ended honeycomb equalizing section substantially coaxial with said duct means, intercepting and conducting the fluid therethrough, said honeycomb section having a plurality of passages across substantially the entire duct cross-section, said parallel passages having hexagonal cross-sections, each passage being approximately 3 inches in length or greater and having a dimension of 3/8 to 3/16 inch across flats.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |