US3321802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerets
Assignee: British Nylon Spinners Ltd
•
Filing: 1965-03-26
•
Granted: 1967-05-30
•
Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Derek J Wood
- 👤 William G Parr
- 👤 Peter C C Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:18
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A SPINNERET FOR USE IN SPINNING ARTIFICIAL FILAMENTS HAVING NON-CIRCULAR CROSS-SECTIONS COMPRISING A SPINNERET PLATE HAVING A FRONT AND BACK FACE AND CONTAINING THEREIN AN EXTRUSION ORIFICE CONSISTING OF AT LEAST TWO INTERCONNECTING SLOT-LIKE ARMS HAVING TIP PORTIONS, SAID TIP PORTIONS OF SAID SLOT-LIKE ARMS HAVING AT LEAST ONE BORE COMMUNICATING WITH SAID TIP PORTIONS OF SAID EXTRUSION ORIFICE, SAID BORE BEING OF SUCH DEPTH AS TO AVOID REACHING SAID FRONT FACE OF SAID SPINNERET.
Claim 2
Dependent Claim
75 words
A SPINNERET FOR USE IN SPINNING ARTIFICIAL FILAMENTS HAVING NON-CIRCULAR CROSS-SECTIONS COMPRISING A SPINNERET PLATE HAVING A FRONT AND BACK FACE AND CONTAINING THEREIN AN EXTRUSION ORIFICE CONSISTING OF AT LEAST TWO INTERCONNECTING SLOT-LIKE ARMS HAVING TIP PORTIONS, SAID TIP PORTIONS OF SAID SLOT-LIKE ARMS HAVING AT LEAST ONE BORE COMMUNICATING WITH SAID TIP PORTIONS OF SAID EXTRUSION ORIFICE, SAID BORE BEING OF SUCH DEPTH AS TO AVOID REACHING SAID FRONT FACE OF SAID SPINNERET.
References Cited (Backward Citations)
US3006026A
Cited
GB865843A
Cited
US3041894A
Cited
US3174364A
Cited
US3109195A
Cited
US3230582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |