Patent US4302048A successfully refreshed from Google Patents.
US5688162A
Expired / Lapsed
US
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Blast wheels and cages for blast wheels
Assignee: Individual
•
Filing: 1994-05-27
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Granted: 1997-11-18
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Expires: 2014-05-27
Abstract
Abstract A blast wheel assembly has a bladed rotor and an impeller which rotate together. A cage has an axial and angular wall including an aperture through which in use particulate material passes. The cross section of the aperture is irregular to control the uniformity of blast effect on a surface being treated. The assembly can be in a mobile or static machine. Various forms of aperture are described, the preferred form of which is of non-uniform shape as it extends angularly with respect to the cage axis, the aperture being of less cross-section in a region intermediate the angular end regions of the aperture.
Inventors
- 👤 Norman Lewis Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:39
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/06; B24C5/068
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A cage for a blast wheel, the cage having an axis and comprising a wall extending angularly about and axially with respect to the axis, and means defining an aperture in the wall, the aperture having a non-uniform shape as it extends angularly with respect to the axis, in which the aperture is of less cross-section in a region intermediate the angular end regions of the aperture.
Claim 2
Dependent Claim
67 words
A cage for a blast wheel, the cage having an axis and comprising a wall extending angularly about and axially with respect to the axis, and means defining an aperture in the wall, the aperture having a non-uniform shape as it extends angularly with respect to the axis, in which the aperture is of less cross-section in a region intermediate the angular end regions of the aperture.
Claim 3
Dependent Claim
15 words
A cage as claimed in claim 1, in which the aperture has a closed periphery.
Claim 4
Dependent Claim
17 words
A cage as claimed in claim 1, in which the aperture comprises two angularly spaced adjacent apertures.
Claim 5
Dependent Claim
14 words
A cage as claimed in claim 3, in which the two apertures are circular.
Claim 6
Dependent Claim
17 words
A cage as claimed in claim 3, in which each of the two apertures has four sides.
Claim 7
Dependent Claim
18 words
A cage as claimed in claim 1, in which the aperture comprises two spaced adjacent arrays of apertures.
Claim 8
Dependent Claim
20 words
A cage as claimed in claim 1, in which the aperture is symmetrical about an axial plane of the cage.
Claim 9
Dependent Claim
18 words
A cage as claimed in claim 1, in which the region is mid-way between the angular end regions.
Claim 10
Dependent Claim
15 words
A blast wheel comprising a rotor assembly and a cage as claimed in claim 1.
References Cited (Backward Citations)
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US3653239A
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US4333278A
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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) | 2000-11-17 | 2001-05-19 | 2001-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-17 | 2005-05-19 | 2005-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-17 | 2009-05-19 | 2009-11-18 | $7700.00 | Window Closed / Lapsed |