Patent US4021167A successfully refreshed from Google Patents.
US4021167A
Expired / Lapsed
US
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Apparatus for manufacturing spherical hollow particles
Assignee: Toyota Motor Corp
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Filing: 1975-10-21
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Granted: 1977-05-03
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Expires: 1995-10-21
Abstract
Abstract Apparatus for manufacturing spherical hollow particles which provides a large number of individual linear water jets arranged in a ring and converging at a single point, so that a molten metal may be passed through this ring of water jets and converging point.
Inventors
- 👤 Itaru Niimi
- 👤 Kametaro Hashimoto
- 👤 Kenji Ushitani
- 👤 Masashi Shibata
- 👤 Yoshitaka Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F1/00; B22F1/06; B22F1/065; B22F1/0655; B22F2009/0824; B22F2009/0828
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
Apparatus for manufacturing spherical hollow particles, which comprises a core defining an internal passage for molten metal flow and having a tapered end, a ring with a hole which receives said tapered end, and a housing which connects said core and said ring to define therewith a pressure-resistant water chamber the end of said core and the hole receiving said core having edges inclined at slightly different slopes, one of said edges being provided with a plurality of slots so that by vertically shifting said core relative to said ring, the gap between said core and said ring can be adjusted and the water supplied to said housing permitted to flow through said slots to form an inverted cone of water.
Claim 2
Dependent Claim
121 words
Apparatus for manufacturing spherical hollow particles, which comprises a core defining an internal passage for molten metal flow and having a tapered end, a ring with a hole which receives said tapered end, and a housing which connects said core and said ring to define therewith a pressure-resistant water chamber the end of said core and the hole receiving said core having edges inclined at slightly different slopes, one of said edges being provided with a plurality of slots so that by vertically shifting said core relative to said ring, the gap between said core and said ring can be adjusted and the water supplied to said housing permitted to flow through said slots to form an inverted cone of water.
Claim 3
Dependent Claim
148 words
Apparatus for manufacturing spherical hollow particles from molten metal, said apparatus comprising a hollow tube having a vertical axis and through which a stream of molten metal may be dropped, said tube having at one end a frusto-conical outer surface concentric with and lying at an acute angle α to the axis of said tube, an outer ring encircling, concentric with, and spaced from said one end of said tube, said ring having a frusto-conical inner surface lying at an acute angle β to said longitudinal axis, said angle β being larger than said angle α and one of said frusto-conical surfaces having equidistant grooves therein parallel to the generatrix of the surface in which said grooves are formed, and means for supplying water under pressure to the space between said surfaces to form a cone of water converging at a point in alignment with said longitudinal axis.
Claim 4
Dependent Claim
148 words
Apparatus for manufacturing spherical hollow particles from molten metal, said apparatus comprising a hollow tube having a vertical axis and through which a stream of molten metal may be dropped, said tube having at one end a frusto-conical outer surface concentric with and lying at an acute angle α to the axis of said tube, an outer ring encircling, concentric with, and spaced from said one end of said tube, said ring having a frusto-conical inner surface lying at an acute angle β to said longitudinal axis, said angle β being larger than said angle α and one of said frusto-conical surfaces having equidistant grooves therein parallel to the generatrix of the surface in which said grooves are formed, and means for supplying water under pressure to the space between said surfaces to form a cone of water converging at a point in alignment with said longitudinal axis.
Claim 5
Dependent Claim
27 words
Apparatus as claimed in claim 2 in which said surfaces are sufficiently close that said water emerges from said grooves in the form of substantially separate jets.
Claim 6
Dependent Claim
15 words
Apparatus as claimed in claim 2 comprising means for adjusting the distance between said surfaces.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 2 in which the angle α is approximately 40° and the angle β is approximately 45°.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |