Patent US4233255A successfully refreshed from Google Patents.
US4233255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling the thickness or weight of extruded stock
Assignee: Honeywell Measurex Corp
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Filing: 1978-11-29
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Granted: 1980-11-11
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Expires: 1998-11-29
Abstract
Abstract An extruding system for the production of continuously extruded elastomer, such as tread stock for the manufacture of vehicle tires, has an extruder, a first take-away conveyor belt for conveying the extrusion as it exits the extruder, a second conveyor belt for varying the thickness or weight of the extrusion after leaving the first conveyor belt, a sensor to measure the running-weigh-scale value and a targeted running-weigh-scale value. The weight or thickness of the continuously extruded elastomer is controlled by measuring the weight of the continuous extrusion at the running-weigh-scale. The measured value is compared to the target value to obtain a control signal. The control signal is used to adjust the difference in speed between the first conveyor belt and the second conveyor belt.
Inventors
- 👤 William S. Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:37
CPC Classifications
G; G01; G01G; G01G11/00; G01G11/08; G01G11/12; B; B29; B29C; B29C48/00; B29C48/25; B29C48/92; B29D; B29D30/00; B29D30/06; B29D30/52; G05; G05D; G05D5/00; G05D5/02; G05D5/03; B29C37/00; B29C2037/90; B29C2948/00; B29C2948/92; B29C2948/92504; B29C2948/9258; B29C2948/92609; B29C2948/92647; B29C2948/92676; B29C2948/92819; B29C2948/92933; B29C2948/92942; B29C48/03; B29C48/07; B29L; B29L2030/00; B29L2030/002
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
In a process comprising an extruder, having a rate of extrusion, a continuous sheet length of elastomeric extrusion, a first variable speed take-away conveyor belt to convey the extrusion as it exits the extruder, a second variable speed conveyor belt for varying the thickness or weight of the extrusion after leaving the first conveyor belt, a running-weigh-scale to measure the weight per unit area of the continuous extrusion after said extrusion commences to be conveyed by said second conveyor, and an a priori determined targeted running-weigh-scale value; a method of controlling the thickness or weight of the extruded elastomer comprising the steps of: measuring the weight value of the extrusion at the running-weigh-scale; comparing the targeted running-weigh-scale value to said measured value to obtain a control signal; and adjusting the difference in speed between said first conveyor belt and said second conveyer belt in response to said control.
Claim 2
Dependent Claim
148 words
In a process comprising an extruder, having a rate of extrusion, a continuous sheet length of elastomeric extrusion, a first variable speed take-away conveyor belt to convey the extrusion as it exits the extruder, a second variable speed conveyor belt for varying the thickness or weight of the extrusion after leaving the first conveyor belt, a running-weigh-scale to measure the weight per unit area of the continuous extrusion after said extrusion commences to be conveyed by said second conveyor, and an a priori determined targeted running-weigh-scale value; a method of controlling the thickness or weight of the extruded elastomer comprising the steps of: measuring the weight value of the extrusion at the running-weigh-scale; comparing the targeted running-weigh-scale value to said measured value to obtain a control signal; and adjusting the difference in speed between said first conveyor belt and said second conveyer belt in response to said control.
Claim 3
Dependent Claim
25 words
The method of claim 1 further comprising: controlling the difference between said rate of extrusion and said rate of speed of said first conveyor belt.
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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) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |