US3669265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Classifying apparatus with adjustable fines outlet
Assignee: Individual
•
Filing: 1969-07-17
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Granted: 1972-06-13
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Expires: 1989-07-17
Abstract
Abstract In a centripetal classifier an adjustable ''''fines'''' outlet opening is provided consisting of a circular array of vertical elongated trapezoidal segments which are mounted by shafts through apertures in a horizontal apron. There are five ''''control'''' segments spaced equally around the circle whose lower shaft ends engage five respective arcuate slots in a rotatable cam plate disposed beneath the apron. Between adjacent ones of the control segments are located four interleaved ''''slave'''' segments having shorter shafts which do not engage the arcuate slots. A horizontal rod is attached to the cam plate and passes through the enclosure and terminates in a handle outside of the enclosure. When the handle is pulled out or pushed in, the cam plate rotates and the lower shaft ends of the control segments are tilted inwardly or outwardly thereby tilting or pivoting the trapezoidal segments outwardly and inwardly to change the effective size of the outlet opening and hence the fines ''''cut.'''' Since the control and slave segments are interleaved, the slave segments are similarly caused to pivot.
Inventors
- 👤 Kurt H Conley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/12; B02; B02C; B02C13/00; B02C13/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
In the classifying apparatus including means for introducing a mixture of various-sized particles and means for causing said mixture to move in an inwardly-spiraling flow in a predetermined direction parallel to the axis of said spacing flow, the combination comprising: a. an outlet opening assembly disposed within said apparatus substantially concentric with said spiral flow in the path of said flow downstream of said introducing means, said assembly including variable means for varying the effective crosssectional area of said opening thereby to intercept and remove from said mixture a predetermined inward fraction thereof and b. means coupled to said assembly and extending outside of said apparatus for operating said variable means.
Claim 2
Dependent Claim
111 words
In the classifying apparatus including means for introducing a mixture of various-sized particles and means for causing said mixture to move in an inwardly-spiraling flow in a predetermined direction parallel to the axis of said spacing flow, the combination comprising: a. an outlet opening assembly disposed within said apparatus substantially concentric with said spiral flow in the path of said flow downstream of said introducing means, said assembly including variable means for varying the effective crosssectional area of said opening thereby to intercept and remove from said mixture a predetermined inward fraction thereof and b. means coupled to said assembly and extending outside of said apparatus for operating said variable means.
Claim 3
Dependent Claim
16 words
The invention according to claim 1 wherein said variable means comprising a plurality of interleaved segments.
Claim 4
Dependent Claim
60 words
The invention according to claim 2 wherein said segments include a plurality of control segments which are directly caused to change their angular position by said adjusting means and a plurality of slave segments which are interleaved with one another and witH said control segments and are thereby impelled indirectly to assume the same angular position as said control segments.
Claim 5
Dependent Claim
76 words
The invention according to claim 3 wherein said control segments have attached thereto shafts and wherein said adjusting means includes a rotatable cam plate located in a substantially horizontal plane in proximity to said control segments and having a plurality of arcuate slots each of which is engaged by at least one of said shafts, and also includes a lever coupled to said cam plate for causing rotation thereof, said lever being accessible outside said apparatus.
Claim 6
Dependent Claim
113 words
The invention according to claim 4 wherein said slave segments are attached to shafts which are shorter than the shafts attached to said control segments and said assembly includes a generally horizontal annular apron between said slave and control segments and said cam plate, said apron having a circular array of apertures through which said shafts of said slave and control segments respectively extend and wherein means are provided which prevent said slave and control segments and their associated shafts from being detached from said cam plate yet allows them to pivot about substantially horizontal axes in response to movement of said control segments upon rotation of said cam plate by said lever.
Claim 7
Dependent Claim
65 words
The invention according to claim 2 wherein said interleaved segments are upstanding and mounted for pivoting about respective horizontal axes and are attached to respective shafts and wherein said adjusting means includes an externally operable cam plate which is engaged by at least predetermined ones of said shafts thereby to cause said segments to tilt about their axes in response to operation of said plate.
Claim 8
Dependent Claim
18 words
The invention according to claim 6 wherein said cam plate is mounted for rotation within its own plane.
Claim 9
Dependent Claim
20 words
The invention according to claim 1 wherein said adjusting means includes externally operable cam means which engages said variable assembly.
Claim 10
Dependent Claim
14 words
The invention according to claim 1 wherein said spiralling flow is also generally downward.
Claim 11
Dependent Claim
25 words
The invention according to claim 1 wherein said variable means varies the axial location of said opening of said assembly in said direction of flow.
Claim 12
Dependent Claim
107 words
In a classification apparatus which comprises means toward the upper end thereof for feeding a mixture of various-sized solid particles, means including a chamber defined by an apertured wall extending downward from said feeding means for creating a first spiral flow of gas, the improvement which comprises: an assembly disposed toward the lower end of said apparatus substantially concentric with said flow which has an outlet opening means having a variable cross-sectional area for removing a predetermined central fraction of the particles in said flow and means coupled to said assembly and accessible on the outside of said apparatus for adjusting the area of said opening means.
Claim 13
Dependent Claim
107 words
In a classification apparatus which comprises means toward the upper end thereof for feeding a mixture of various-sized solid particles, means including a chamber defined by an apertured wall extending downward from said feeding means for creating a first spiral flow of gas, the improvement which comprises: an assembly disposed toward the lower end of said apparatus substantially concentric with said flow which has an outlet opening means having a variable cross-sectional area for removing a predetermined central fraction of the particles in said flow and means coupled to said assembly and accessible on the outside of said apparatus for adjusting the area of said opening means.
Claim 14
Dependent Claim
34 words
The invention according to claim 11 wherein said variable outlet opening includes a circular row of substantially vertical segments which are pivotable about respective horizontal axes in response to operation of said adjusting means.
Claim 15
Dependent Claim
25 words
The invention according to claim 12 wherein said assembly rests on the terminal portion of a conduit adapted to be connected to a suction source.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |