US6764390B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal throwing vane
Assignee: Wheelabrator Group Inc
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Filing: 2001-11-28
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Granted: 2004-07-20
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Expires: 2021-11-28
Abstract
Abstract An improved vane for use with a centrifugal throwing apparatus. The vane has a convex leading surface and flared edges to provide a consistent, broad blast pattern and improved vane wear characteristics. In one embodiment, the vane includes a pickup end, a discharge end opposed to the pickup end, and a leading surface connecting the pickup end to the discharge end. A portion of the leading surface is convex in cross section. Two opposed longitudinal edges define the leading surface, with at least one of the edges being outwardly flared. In an alternative embodiment, the vane includes a longitudinal raised rail formed near one edge of the leading surface, the rail being outwardly flared.
Inventors
- 👤 Katherine Holloway
- 👤 Dan Stoutamire
- 👤 James Simpkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:56
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/06; B24C5/062
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
73 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface connecting the pickup end to the discharge end, a portion of the leading surface being convex in cross section, wherein the leading surface is convex from a substantially laminar flow point; and two opposed longitudinal edges defining the leading surface, at least one of the edges being outwardly flared.
Claim 2
Dependent Claim
73 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface connecting the pickup end to the discharge end, a portion of the leading surface being convex in cross section, wherein the leading surface is convex from a substantially laminar flow point; and two opposed longitudinal edges defining the leading surface, at least one of the edges being outwardly flared.
Claim 3
Dependent Claim
17 words
The vane of claim 1 , wherein both of the two opposed longitudinal edges are outwardly flared.
Claim 4
Dependent Claim
25 words
The vane of claim 1 , wherein said at least one of the edges is flared outwardly starting from a point proximate the pickup end.
Claim 5
Dependent Claim
37 words
The vane of claim 1 , having a radius of convexity that increases from about 0 mm near the pickup end to between about 5 mm and about 15 mm at the discharge end of the vane.
Claim 6
Dependent Claim
34 words
The vane of claim 4 , wherein the radius of convexity increases from about 0 mm at a longitudinal midpoint of the vane to about 7 mm at the discharge end of the vane.
Claim 7
Dependent Claim
34 words
The vane of claim 1 , wherein said at least one of the edges is flared outwardly at an increasing rate from the start of the flare to the discharge end of the vane.
Claim 8
Dependent Claim
22 words
The vane of claim 1 , wherein the leading surface has a width of between about 5 cm and about 15 cm.
Claim 9
Dependent Claim
17 words
The vane of claim 7 , wherein the width of the leading surface is about 10 cm.
Claim 10
Dependent Claim
42 words
The vane of claim 1 , wherein said at least one of the edges is flared outwardly by a distance of between about 5 mm and about 15 mm from the start of the flare to the discharge end of the vane.
Claim 11
Dependent Claim
37 words
The vane of claim 9 , wherein said at least one of the edges is flared outwardly by a distance of about 11 mm from the start of the flare to the discharge end of the vane.
Claim 12
Dependent Claim
17 words
The vane of claim 10 , wherein the leading surface has a width of about 10 cm.
Claim 13
Dependent Claim
81 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface connecting the pickup end to the discharge end, a portion of the leading surface being convex in cross section, wherein the leading surface is convex from a substantially laminar flow point; two opposed longitudinal edges defining the leading surface; and a longitudinal raised rail formed near one edge of the leading surface, the rail being outwardly flared.
Claim 14
Dependent Claim
81 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface connecting the pickup end to the discharge end, a portion of the leading surface being convex in cross section, wherein the leading surface is convex from a substantially laminar flow point; two opposed longitudinal edges defining the leading surface; and a longitudinal raised rail formed near one edge of the leading surface, the rail being outwardly flared.
Claim 15
Dependent Claim
24 words
The vane of claim 12 , having a raised rail on each side of the leading surface, each of the rails being outwardly flared.
Claim 16
Dependent Claim
19 words
The vane of claim 12 , wherein the rail is flared outwardly from a point proximate the pickup end.
Claim 17
Dependent Claim
37 words
The vane of claim 12 , having a radius of convexity that increases from about 0 mm near the pickup end to between about 5 mm and about 15 mm at the discharge end of the vane.
Claim 18
Dependent Claim
34 words
The vane of claim 15 , wherein the radius of convexity increases from about 0 mm at a longitudinal midpoint of the vane to about 7 mm at the discharge end of the vane.
Claim 19
Dependent Claim
11 words
The vane of claim 12 , wherein the rail is curved.
Claim 20
Dependent Claim
29 words
The vane of claim 12 , wherein the rail is flared outwardly at an increasing rate from the start of the flare to the discharge end of the vane.
Claim 21
Dependent Claim
22 words
The vane of claim 12 , wherein the leading surface has a width of between about 5 cm and about 15 cm.
Claim 22
Dependent Claim
17 words
The vane of claim 19 , wherein the width of the leading surface is about 10 cm.
Claim 23
Dependent Claim
37 words
The vane of claim 12 , wherein the rail is flared outwardly by a distance of between about 5 mm and about 15 mm from the start of the flare to the discharge end of the vane.
Claim 24
Dependent Claim
32 words
The vane of claim 21 , wherein the rail is flared outwardly by a distance of about 11 mm from the start of the flare to the discharge end of the vane.
Claim 25
Dependent Claim
17 words
The vane of claim 22 , wherein the leading surface has a width of about 10 cm.
Claim 26
Dependent Claim
138 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface about 10 cm wide and about 21 cm long connecting the pickup end to the discharge end, the leading surface being convex in cross section with the convexity starting at a point about midway between the pickup end and the discharge end of the vane and continuing to the discharge end of the vane, the leading surface having a radius of convexity of about 7 mm proximate the discharge end of the vane; two opposed longitudinal edges defining the leading surface; and a raised rail running inside of each edge, each rail being outwardly flared a distance of about 11 mm from the start of the flare to the discharge end of the vane.
Claim 27
Dependent Claim
138 words
A vane for a centrifugal throwing wheel, said vane comprising: a pickup end; a discharge end opposed to the pickup end; a leading surface about 10 cm wide and about 21 cm long connecting the pickup end to the discharge end, the leading surface being convex in cross section with the convexity starting at a point about midway between the pickup end and the discharge end of the vane and continuing to the discharge end of the vane, the leading surface having a radius of convexity of about 7 mm proximate the discharge end of the vane; two opposed longitudinal edges defining the leading surface; and a raised rail running inside of each edge, each rail being outwardly flared a distance of about 11 mm from the start of the flare to the discharge end of the vane.
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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) | 2007-07-20 | 2008-01-19 | 2008-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-20 | 2012-01-19 | 2012-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-20 | 2016-01-19 | 2016-07-20 | $7700.00 | Window Closed / Lapsed |