Patent US3850368A successfully refreshed from Google Patents.
US3850368A
Expired / Lapsed
US
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Apparatus for centrifugal compaction
Assignee: Kennametal Inc
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Filing: 1973-02-12
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Granted: 1974-11-26
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Expires: 1993-02-12
Abstract
Abstract A method and apparatus for the centrifugal compaction of particulate material in which the particulate material is admixed with a liquid to form a slurry and is then placed in a chamber and centrifuged about a main axis to cause the material to compact into a discrete body. A particular feature of the invention is to be found in the fact that the chamber in which the slurry is contained during compacting is caused to rotate about an axis inclined to the main axis so that the particulate material is agitated and thereby nests intimately together during the centrifuging operation thereby resulting in workpieces significantly more dense than can be arrived at by simple centrifuging or even by pressing.
Inventors
- 👤 B Boeckeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:53
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/08; B04B5/00; B04B5/02; B04B5/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
In an apparatus for the centrifugal compaction for granular materials, a support, means engaging said support and defining a first axis of rotation thereof, flasks pivotally mounted on said support in circumferentially distributed relation and radially spaced from said first axis, each flask being swingable outwardly at the bottom in response to rotation of said support, chamber means carried by each flask and having A cavity adapted to receive a slurry consisting of the said granular material to be compacted and a liquid, a drive shaft on said first axis for rotating said chamber means about respective second axes extending angularly to said first axis as said support rotates about said first axis, said second axes being inclined at a predetermined angle to a plane perpendicular to said first axis, drive means responsive to outward swinging movement of the lower ends of said flasks on said support for drivingly connecting said chamber means to said drive shaft, and means on said support for engaging and halting said flasks at said predetermined angle of inclination to said plane.
Claim 2
Dependent Claim
177 words
In an apparatus for the centrifugal compaction for granular materials, a support, means engaging said support and defining a first axis of rotation thereof, flasks pivotally mounted on said support in circumferentially distributed relation and radially spaced from said first axis, each flask being swingable outwardly at the bottom in response to rotation of said support, chamber means carried by each flask and having A cavity adapted to receive a slurry consisting of the said granular material to be compacted and a liquid, a drive shaft on said first axis for rotating said chamber means about respective second axes extending angularly to said first axis as said support rotates about said first axis, said second axes being inclined at a predetermined angle to a plane perpendicular to said first axis, drive means responsive to outward swinging movement of the lower ends of said flasks on said support for drivingly connecting said chamber means to said drive shaft, and means on said support for engaging and halting said flasks at said predetermined angle of inclination to said plane.
Claim 3
Dependent Claim
34 words
An apparatus according to claim 1 in which said chamber means comprises a hollow cylindrical metallic shell adapted to receive therein mold elements defining the size and shape of the article to be made.
Claim 4
Dependent Claim
36 words
An apparatus according to claim 1 in which said drive means includes output shaft means coupled at one end to said drive shaft and extending radially along said support to the region of said chamber means.
Claim 5
Dependent Claim
89 words
An apparatus according to claim 1 which includes a speed reducer having an input shaft on said first axis and forming said drive shaft and an output shaft for each chamber extending on said support to near the respective chamber, and cooperating elements of a brake connected to said input shaft and to a stationary point and operable when actuated to hold said input shaft stationary during rotation of said support thereby to cause said output shafts to rotate and drive the said chamber means on said second axis.
Claim 6
Dependent Claim
16 words
An apparatus according to claim 4 which includes means selectively operable for actuating said brake means.
Claim 7
Dependent Claim
110 words
An apparatus according to claim 1 which includes a ring for supporting each said flask, trunnions on each ring pivotally connecting the ring to said support on a horizontal axis which is perpendicular to a radius extending therefrom to said first axis, each said flask being generally cylindrical and being insertable into the respective ring from above and including flange means near the top to engage the top of said ring, each said chamber means being insertable into the respective said flask from above, and bearing means interposed between each said chamber means and the pertaining said flask to permit free relative rotation of the chamber means in said flask.
Claim 8
Dependent Claim
55 words
An apparatus according to claim 6 in which said bearing means include thrust bearing means interposed between the bottom of each said chamber means and the bottom of the pertaining said flask and radial bearing means disposed between an upper region of each said chamber means and an upper region of the pertaining said flask.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |