US3328236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bunched tube approach to a headbox of a papermaking machine
Assignee: Black Clawson Co
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Filing: 1964-06-22
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Granted: 1967-06-27
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Burgess
- 👤 Girard L Calehuff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02; D21F1/024; D21F1/026; D21F1/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
HEADBOX APPARATUS OF THE TYPE DESCRIBED COMPRISING: (A) AN ELONGATED MANIFOLD HAVING A TOP WALL PORTION, BOTTOM WALL PORTION AND SIDEWALL PORTION (B) AN INLET PLATE MEM BER EXTENDING BETWEEN AND ATTACHED TO SAID TOP AND BOTTOM WALL PORTIONS IN SPACED RELATION TO SAID SIDEWALL PORTION, (C) SAID INLET PLATE MEMBER HAVING PORTIONS DEFINING A PLURALITY OF APERTURES THERETHROUGH, (D) A PLURALITY OF TUBES EXTENDING FROM SAID INLET PLATE MEMBER WITH THE INLET END OF EACH OF SAID TUBES OVERLYING ONE OF SAID APERTURES, AND (E) A SLICE ASSEMBLY INCLUDING A REAR WALL AND UPPER AND LOWER SLICE LIPS CONVERGING AWAY FROM SAID REAR WALL TO DEFINE A GENERALLY TRIANGULAR SPACE AND OUTLET SLOT,
Claim 2
Dependent Claim
114 words
HEADBOX APPARATUS OF THE TYPE DESCRIBED COMPRISING: (A) AN ELONGATED MANIFOLD HAVING A TOP WALL PORTION, BOTTOM WALL PORTION AND SIDEWALL PORTION (B) AN INLET PLATE MEM BER EXTENDING BETWEEN AND ATTACHED TO SAID TOP AND BOTTOM WALL PORTIONS IN SPACED RELATION TO SAID SIDEWALL PORTION, (C) SAID INLET PLATE MEMBER HAVING PORTIONS DEFINING A PLURALITY OF APERTURES THERETHROUGH, (D) A PLURALITY OF TUBES EXTENDING FROM SAID INLET PLATE MEMBER WITH THE INLET END OF EACH OF SAID TUBES OVERLYING ONE OF SAID APERTURES, AND (E) A SLICE ASSEMBLY INCLUDING A REAR WALL AND UPPER AND LOWER SLICE LIPS CONVERGING AWAY FROM SAID REAR WALL TO DEFINE A GENERALLY TRIANGULAR SPACE AND OUTLET SLOT,
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |