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US3761061A
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Apparatus for adjusting the flow of material through an extruder
Assignee: Phillips Petroleum Co
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Filing: 1971-08-26
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Granted: 1973-09-25
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Expires: 1991-08-26
Abstract
Abstract An apparatus and method for adjusting the flow of material through the annulus between the churn and a housing assembly of a plasticizing section of an extruder.
Inventors
- 👤 G Carrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/03; B29C48/09; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92504; B29C2948/9258; B29C2948/926; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92961
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
An apparatus for adjusting the flow of material through the annulus between a churn and a housing assembly of a plasticizing section of an extruder, comprising: a ring being positioned about said churn section within the housing assembly and having an inside diameter in the range of about the inside diameter of adjacent portions of the housing assembly to substantially the diameter of an adjacent segment of the churn and an outside diameter at least greater than the inside diameter of the housing assembly; and means for laterally moving the ring relative to the axis of the churn for adjusting the pressure and flow of material about the churn.
Claim 2
Independent Claim
109 words
An apparatus for adjusting the flow of material through the annulus between a churn and a housing assembly of a plasticizing section of an extruder, comprising: a ring being positioned about said churn section within the housing assembly and having an inside diameter in the range of about the inside diameter of adjacent portions of the housing assembly to substantially the diameter of an adjacent segment of the churn and an outside diameter at least greater than the inside diameter of the housing assembly; and means for laterally moving the ring relative to the axis of the churn for adjusting the pressure and flow of material about the churn.
Claim 3
Dependent Claim
56 words
An apparatus, as set forth in claim 1, wherein the means are at least three bolts with each of said bolts passing through the housing assembly and into contact with the ring, said bolts being matable with threads of the housing assembly for movement of the bolts and ring relative to the housing and the churn.
Claim 4
Dependent Claim
30 words
An apparatus, as set forth in claim 1, wherein the inside diameter of the ring is substantially equal to the inside diameter of immediately adjacent portions of the housing assembly.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |