Patent US2820985A successfully refreshed from Google Patents.
US2820985A
Expired / Lapsed
US
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Spinnerette insert and assembly
Assignee: Wyeth Holdings LLC
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Filing: 1955-07-11
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Granted: 1958-01-28
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
D; D01; D01D; D01D4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12444; Y10T428/12479; Y10T428/12493; Y10T428/12639; Y10T428/12646
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A SPINNERETTE ASSEMBLY COMPRISING, IN COMBINATION, A SPINNERETTE HAVING A CUP AND A LIP; AN INSERT OF SUCH SIZE AND SHAPE AS TO PERMIT IT TO FIT SNUGLY WITHIN THE CUP OF THE SAID SPINNERETTE, THE THICKNESS OF THE SAID INSERT BEING SLIGHTLY LESS THAN THE INSIDE DEPTH OF THE SPINNERETTE CUP, SAID INSERT COMPRISING SUPERIMPOSED DISKS OF STAINLESS STEEL WIRE CLOTH SINTERED TOGETHER TO FORM A RIGID, POROUS UNITARY STRUCTURE, THE DISKS OF SAID INSERT, AFTER THE FIRST DISK, HAVING BEEN ROTATED IN THE PLANE OF LAMINATION FROM 10* TO 80*, WITH RESPECT TO CONTACTING SUPERIMPOSED DISKS, BEFORE BEING UNITED TOGETHER, AND THE OPENINGS BETWEEN THE WOVEN FILAMENTS COMPRISING THE SAID WIER CLOTH BEING SUCH THAT, WHEN THE ASSEMBLY IS IN USE, THERE WILL BE RELATIVELY GOOD FLOW OF THE SPINNING SOLUTION THROUGH THE INSERT WITH MINIMUM BACK PRESSURE; AND A FILTER FABRIC POSITIONED ADJACENT THE SAID INSERT SO THAT THE OUTER PORTION THEREOF RESTS UPON THE LIP OF THE SPINNERETTE AND IS THEN HELD FIRMLY IN PLACE WHEN THE SPINNERETTE IS FIXED IN ITS SUPPORT, SAID FABRIC HAVING A POROSITY WHICH IS LESS THAN THAT OF THE INDIVIDUAL DISKS OF STAINLESS STEEL WIRE CLOTH OF WHICH THE SAID INSERT IS FORMED.
Claim 2
Dependent Claim
203 words
A SPINNERETTE ASSEMBLY COMPRISING, IN COMBINATION, A SPINNERETTE HAVING A CUP AND A LIP; AN INSERT OF SUCH SIZE AND SHAPE AS TO PERMIT IT TO FIT SNUGLY WITHIN THE CUP OF THE SAID SPINNERETTE, THE THICKNESS OF THE SAID INSERT BEING SLIGHTLY LESS THAN THE INSIDE DEPTH OF THE SPINNERETTE CUP, SAID INSERT COMPRISING SUPERIMPOSED DISKS OF STAINLESS STEEL WIRE CLOTH SINTERED TOGETHER TO FORM A RIGID, POROUS UNITARY STRUCTURE, THE DISKS OF SAID INSERT, AFTER THE FIRST DISK, HAVING BEEN ROTATED IN THE PLANE OF LAMINATION FROM 10* TO 80*, WITH RESPECT TO CONTACTING SUPERIMPOSED DISKS, BEFORE BEING UNITED TOGETHER, AND THE OPENINGS BETWEEN THE WOVEN FILAMENTS COMPRISING THE SAID WIER CLOTH BEING SUCH THAT, WHEN THE ASSEMBLY IS IN USE, THERE WILL BE RELATIVELY GOOD FLOW OF THE SPINNING SOLUTION THROUGH THE INSERT WITH MINIMUM BACK PRESSURE; AND A FILTER FABRIC POSITIONED ADJACENT THE SAID INSERT SO THAT THE OUTER PORTION THEREOF RESTS UPON THE LIP OF THE SPINNERETTE AND IS THEN HELD FIRMLY IN PLACE WHEN THE SPINNERETTE IS FIXED IN ITS SUPPORT, SAID FABRIC HAVING A POROSITY WHICH IS LESS THAN THAT OF THE INDIVIDUAL DISKS OF STAINLESS STEEL WIRE CLOTH OF WHICH THE SAID INSERT IS FORMED.
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) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |