US3201308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable drainage foil for paper machine
Assignee: Library and Archives Canada
•
Filing: 1963-10-02
•
Granted: 1965-08-17
•
Expires: 1983-10-02
Abstract
No abstract record available.
Inventors
- 👤 Denis A Goddard
- 👤 Truxa Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:40
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/483; D21F1/486; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/1896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN ADJUSTABLE DRAINIAGE FOIL FOR A FOURDRINIER MACHINE HAVING A FORMING WIRE TRAVELLING IN A GIVEN DIRECTION, SAID FOIL EXTENDING UNDER SAID WIRE TRANSVERSELY OF SAID DIRECTION, SAID FOIL HAVING A RIGID LEADING PORTION AND A RIGID TRAILING PORTION JOINED BY A THIN-NECKED FLEXIBLE PORTION, SAID LEADING PORTION, FLEXIBLE PORTION AND TRAILING PORTION HAVING A CONTINUOUS UPPER SURFACE, SAID LEADING PORTION HAVING AN ACUTE-ANGLED LEADING EDGE AND HAVING A FLAT UPPER SURFACE IN SUPPORTING RELATIONSHIP TO SAID WIRE, SAID LEADING PORTION BEING FIRMLY ATTACHED TO A FIXED SUPPORTING BODY, SAID TRAILING PORTION HAVING A FLAT UPPER SUR-
Claim 2
Dependent Claim
97 words
AN ADJUSTABLE DRAINIAGE FOIL FOR A FOURDRINIER MACHINE HAVING A FORMING WIRE TRAVELLING IN A GIVEN DIRECTION, SAID FOIL EXTENDING UNDER SAID WIRE TRANSVERSELY OF SAID DIRECTION, SAID FOIL HAVING A RIGID LEADING PORTION AND A RIGID TRAILING PORTION JOINED BY A THIN-NECKED FLEXIBLE PORTION, SAID LEADING PORTION, FLEXIBLE PORTION AND TRAILING PORTION HAVING A CONTINUOUS UPPER SURFACE, SAID LEADING PORTION HAVING AN ACUTE-ANGLED LEADING EDGE AND HAVING A FLAT UPPER SURFACE IN SUPPORTING RELATIONSHIP TO SAID WIRE, SAID LEADING PORTION BEING FIRMLY ATTACHED TO A FIXED SUPPORTING BODY, SAID TRAILING PORTION HAVING A FLAT UPPER SUR-
References Cited (Backward Citations)
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |