US4046103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnating die
Assignee: Owens Corning
•
Filing: 1976-03-29
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Granted: 1977-09-06
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Expires: 1996-03-29
Abstract
Abstract A die for impregnating yarn is provided with a die insert having a minimum inside diameter. An inlet duct opening into the die has walls with length L, the walls sloping at an angle within the range of from about 5 degrees to about 25 degrees. The length of the inlet duct is within the range of from about 10 to about 25 times the minimum inside diameter of the die insert. The maximum diameter of the inlet duct is within the range of from about 15 to about 35 times the minimum inside diameter of the die insert.
Inventors
- 👤 Paul D. Yakuboff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:28
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/08; D06B15/085; Y; Y10; Y10S; Y10S118/00; Y10S118/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A die comprising: a. a die insert having a bore with a tapered entrance, said bore tapering to a minimum inside diameter d; and, b. an inlet duct having a frustro-conical inner surface, said inlet duct opening into said bore, said surface sloping inwardly at an angle about 8°, said inlet duct having a length L, said length L being defined by the relation L=rd wherein r is a parameter having a value within the range of from about 10 to about 25, and said inlet having a maximum inside diameter D, said diameter D being defined by the relation D=sd wherein s is a parameter having a value within the range of from about 15 to about 35.
Claim 2
Dependent Claim
119 words
A die comprising: a. a die insert having a bore with a tapered entrance, said bore tapering to a minimum inside diameter d; and, b. an inlet duct having a frustro-conical inner surface, said inlet duct opening into said bore, said surface sloping inwardly at an angle about 8°, said inlet duct having a length L, said length L being defined by the relation L=rd wherein r is a parameter having a value within the range of from about 10 to about 25, and said inlet having a maximum inside diameter D, said diameter D being defined by the relation D=sd wherein s is a parameter having a value within the range of from about 15 to about 35.
Claim 3
Dependent Claim
13 words
The die of claim 1 wherein the value of r is about 16.
Claim 4
Dependent Claim
13 words
The die of claim 1 wherein the value of s is about 24.
Claim 5
Dependent Claim
13 words
The die of claim 1 wherein said die insert comprises a diamond insert.
Claim 6
Dependent Claim
11 words
The die of claim 4 wherein said diamond insert is beveled.
References Cited (Backward Citations)
US1131623A
Cited
GB724952A
Cited
US2787980A
Cited
US2960063A
Cited
GB943151A
Cited
US3090352A
Cited
US3308787A
Cited
US3898113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |