US2970938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of stock supply in paper making machines
Assignee: Beloit Iron Works Inc
•
Filing: 1956-05-08
•
Granted: 1961-02-07
•
Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Erbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:18
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86204; Y10T137/86348; Y10T137/86372
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
THE METHOD OF MAKING PAPER COMPRISING THE STEPS OF SUPPLY STOCK AT A HIGH VELOCITY, PROGRESSIVELY REDUCING THE VELOCITY OF SAID STOCK BY CONFINING IT FOR FLOW IN ALWAYS UPWARD DIRECTIONS WHILE ANGULARLY CHANGING ITS PATH AND INCREASING ITS CROSS-SECTIONAL AREAS, LEADING AND CONFINING SAID STOCK FLOW INTO AN OPEN TOP POOL FROM THE BOTTOM THEREOF AND WITHOUT SURFACE SPLASHING, AND THEN FLOWING ONLY THE UPPER PART OF SAID POOL TO A PAPER FORMING REGION TO FORM A WEB OF WET PAPER FIBERS.
References Cited (Backward Citations)
DE224759C
Cited
US1046901A
Cited
US1144306A
Cited
US1262225A
Cited
US1856492A
Cited
US2114858A
Cited
FR921160A
Cited
US2527298A
Cited
US2919233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |