US3368936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for introducing a flocculating agent to an asbestoscement slurry to control the thickness of the sheet used in winding to form a pipe
Assignee: Johns Manville Corp
•
Filing: 1967-03-17
•
Granted: 1968-02-13
•
Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Long George E De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:16
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; B; B28; B28B; B28B21/00; B28B21/42; B28B21/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
THE METHOD OF CONTROLLING THE THICKNESS OF A SHEET OF PARTICULATE MATERIAL ON A CONVEYOR ACROSS THE WIDTH OF SAID CONVEYOR COMPRISING: (A) CONTAINING A SLURRY OF PARTICULATE MATERIAL IN A VAT, (B) DEPOSITING PORTIONS OF SAID PARTICULATE MATERIAL FROM SAID SLURRY AND FORMING ON A CONVEYOR A SHEET OF SAID PARTICULATE MATIERAL ACROSS THE WIDTH OF SAID CONVEYOR WHEREIN SAID CONVEYOR HAS A WIDTH EXTENDING IN THE SAME DIRECTION AS THE WIDTH OF SAID VAT, (C) INTRODUCING AN AGENT INTO SAID SLURRY AT SPACED LOCATIONS ACROSS THE WIDTH OF SAID VAT TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID VAT ONTO SAID CONVEYOR, AND (D) ADJUSTING THE SPACE BETWEEN SAID SPACED LOCATIONS WHERE SIAD AGENT IS BEING INTRODUCED TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY ACROSS THE WIDTH OF SAID VAT AND THE THICKNESS OF SAID SHEET ACROSS THE WIDTH OF SAID CONVEYOR.
Claim 2
Independent Claim
154 words
THE METHOD OF CONTROLLING THE THICKNESS OF A SHEET OF PARTICULATE MATERIAL ON A CONVEYOR ACROSS THE WIDTH OF SAID CONVEYOR COMPRISING: (A) CONTAINING A SLURRY OF PARTICULATE MATERIAL IN A VAT, (B) DEPOSITING PORTIONS OF SAID PARTICULATE MATERIAL FROM SAID SLURRY AND FORMING ON A CONVEYOR A SHEET OF SAID PARTICULATE MATIERAL ACROSS THE WIDTH OF SAID CONVEYOR WHEREIN SAID CONVEYOR HAS A WIDTH EXTENDING IN THE SAME DIRECTION AS THE WIDTH OF SAID VAT, (C) INTRODUCING AN AGENT INTO SAID SLURRY AT SPACED LOCATIONS ACROSS THE WIDTH OF SAID VAT TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID VAT ONTO SAID CONVEYOR, AND (D) ADJUSTING THE SPACE BETWEEN SAID SPACED LOCATIONS WHERE SIAD AGENT IS BEING INTRODUCED TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY ACROSS THE WIDTH OF SAID VAT AND THE THICKNESS OF SAID SHEET ACROSS THE WIDTH OF SAID CONVEYOR.
Claim 3
Dependent Claim
167 words
APPARATUS FOR CONTROLLING THE THICKNESS OF A SHEET OF PARTICULATE MATERIAL ACORSS THE WIDTH THEREOF WHEREIN SAID SHEET IS FORMED ON A CONVEYOR FROM A SLURRY OF SAID PARTICULATE MATERIAL COMPRISING: (A) A VAT CONTAINING A SLURRY OF PARTICULATE MATERIAL, (B) MEANS FOR DEPOSITING PORTIONS OF SAID PARTICULATE MATERIAL FROM SAID SLURRY AND FORMING ON A CONVEYOR A SHEET OF SAID PARTICULATE MATERIAL ACROSS THE WIDTH OF SAID CONVEYOR, (C) SAID CONVEYOR HAVING A WIDTH EXTENDING IN THE SAME DIRECTION AS THE WIDTH OF SAID VAT, (D) MEANS FOR CONTROLLING THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY INCLUDING THE ADDITION OF AN AGENT TO SAID SLURRY AT SPACED LOCATIONS ACROSS THE WIDETH OF SAID VAT, AND (E) MEANS FOR ADJUSTING THE SPACE BETWEEN SAID SPACED LOCATIONS WHERE SAID AGENT IS BEING INTRODUCED TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY ACROSS THE WIDTH OF SAID VAT AND THE THICKNESS OF SAID SHEET ACROSS THE WIDTH OF SAID CONVEYOR.
Claim 4
Dependent Claim
167 words
APPARATUS FOR CONTROLLING THE THICKNESS OF A SHEET OF PARTICULATE MATERIAL ACORSS THE WIDTH THEREOF WHEREIN SAID SHEET IS FORMED ON A CONVEYOR FROM A SLURRY OF SAID PARTICULATE MATERIAL COMPRISING: (A) A VAT CONTAINING A SLURRY OF PARTICULATE MATERIAL, (B) MEANS FOR DEPOSITING PORTIONS OF SAID PARTICULATE MATERIAL FROM SAID SLURRY AND FORMING ON A CONVEYOR A SHEET OF SAID PARTICULATE MATERIAL ACROSS THE WIDTH OF SAID CONVEYOR, (C) SAID CONVEYOR HAVING A WIDTH EXTENDING IN THE SAME DIRECTION AS THE WIDTH OF SAID VAT, (D) MEANS FOR CONTROLLING THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY INCLUDING THE ADDITION OF AN AGENT TO SAID SLURRY AT SPACED LOCATIONS ACROSS THE WIDETH OF SAID VAT, AND (E) MEANS FOR ADJUSTING THE SPACE BETWEEN SAID SPACED LOCATIONS WHERE SAID AGENT IS BEING INTRODUCED TO CONTROL THE RATE OF DEPOSITION OF SAID PARTICULATE MATERIAL FROM SAID SLURRY ACROSS THE WIDTH OF SAID VAT AND THE THICKNESS OF SAID SHEET ACROSS THE WIDTH OF SAID CONVEYOR.
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |