Patent US3215593A successfully refreshed from Google Patents.
US3215593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headbox for twin wire paper making apparatus
Assignee: Black Clawson Co
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Filing: 1963-01-25
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Granted: 1965-11-02
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Expires: 1983-01-25
Abstract
No abstract record available.
Inventors
- 👤 Marshall S Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:15
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/06; D21F9/00; D21F9/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN PAPER MAKING APPARATUS COMPRISING A FRAM, A PAIR OF IMPERFORATE BREAST ROLLS SUPPORTED ON SAID FRAME IN CLOSELY SPACED RELATION DEFINING A VERTICAL NIP THEREBETWEEN, END PLATE MEANS COOPERATING WITH SAID BREAST ROLLS TO DEFINE A TROUGH ABOVE SAID NIP AND BETWEEN SAID BREAST ROLLS, A PAIR OF COUCH ROLLS ASSOCIATED WITH SAID BREAST ROLLS RESPECTIVELY AND SUPPORTED IN VERTICALLY SPACED RELATION BELOW THE ASSOCIATED SAID BREAST ROLLS, A PAIR OF ENDLESS FORMING WEBS LOOPED AROUND ASSOCIATED SAID BREAST AND COUCH ROLLS FOR TRAVEL THROUGH A FORMING ZONE BETWEEN SAID BREAST AND COUCH ROLLS, A HEADBOX MOUNTED ON SAID FRAME ABOVE SAID TROUGH INCLUDING SIDE AND END WALLS DEFINING THEREBETWEEN A CONTAINER FOR HOLDING STOCK, AND MEANS FOR SUPPLYING STOCK TO SAID CONTAINER, THE COMBINATION OF COOPERATING LIPS ON THE LOWER ENDS OF SAID SIDE WALLS OF SAID HEADBOX DEPENDING INTO SAID TROUGH TO A
Claim 2
Dependent Claim
146 words
IN PAPER MAKING APPARATUS COMPRISING A FRAM, A PAIR OF IMPERFORATE BREAST ROLLS SUPPORTED ON SAID FRAME IN CLOSELY SPACED RELATION DEFINING A VERTICAL NIP THEREBETWEEN, END PLATE MEANS COOPERATING WITH SAID BREAST ROLLS TO DEFINE A TROUGH ABOVE SAID NIP AND BETWEEN SAID BREAST ROLLS, A PAIR OF COUCH ROLLS ASSOCIATED WITH SAID BREAST ROLLS RESPECTIVELY AND SUPPORTED IN VERTICALLY SPACED RELATION BELOW THE ASSOCIATED SAID BREAST ROLLS, A PAIR OF ENDLESS FORMING WEBS LOOPED AROUND ASSOCIATED SAID BREAST AND COUCH ROLLS FOR TRAVEL THROUGH A FORMING ZONE BETWEEN SAID BREAST AND COUCH ROLLS, A HEADBOX MOUNTED ON SAID FRAME ABOVE SAID TROUGH INCLUDING SIDE AND END WALLS DEFINING THEREBETWEEN A CONTAINER FOR HOLDING STOCK, AND MEANS FOR SUPPLYING STOCK TO SAID CONTAINER, THE COMBINATION OF COOPERATING LIPS ON THE LOWER ENDS OF SAID SIDE WALLS OF SAID HEADBOX DEPENDING INTO SAID TROUGH TO A
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |