Patent DE25420C successfully refreshed from Google Patents.
Patent US2995081A successfully refreshed from Google Patents.
Patent US4512586A successfully refreshed from Google Patents.
US3113733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for extracting trash
Assignee: United States Gypsum Co
•
Filing: 1960-10-13
•
Granted: 1963-12-10
•
Expires: 1980-10-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:27
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN APPARATUS FOR SEPARATING SUBSTANTIALLY SOLID MATERIALS FROM AN AQUEOUS PULP SUSPENSION CONTAMINATED BY SAID SOLID MATERIALS COMPRISING A SLUSHING MACHINE, A CYLINDRICAL SCREEN MOUNTED ADJACENT TO AND IN COOPERATIVE RELATIONSHIP WITH THE SLUSHING MACHINE AND HAVING A MESH WITH PERFORATIONS OF PREDETERMINED SIZE FOR SEPARATING SOLID MATERIALS LARGER THAN THE SIZE OF THE PERFORATIONS FROM SOLID MATERIALS AND PULP PARTICLES IN SAID SUSPENSION PASSABLE THROUGH THE MESH, SAID SCREEN BEING POSITIONED ALONG A DECLINE FROM A HIGHER INPUT END OF SAID SCREEN TO A LOWER DISCHARGE END AND BEING REVOLVABLE ABOUT AN AXIS PASSING THROUGH EACH OF SAID ENDS, A CONDUIT IN COMMUNICATION WITH THE SLUSHING MACHINE AND THE SCREEN, A PUMP CONNECTED TO THE CONDUIT INTERMEDIATE THE SLUSHING
Claim 2
Independent Claim
120 words
AN APPARATUS FOR SEPARATING SUBSTANTIALLY SOLID MATERIALS FROM AN AQUEOUS PULP SUSPENSION CONTAMINATED BY SAID SOLID MATERIALS COMPRISING A SLUSHING MACHINE, A CYLINDRICAL SCREEN MOUNTED ADJACENT TO AND IN COOPERATIVE RELATIONSHIP WITH THE SLUSHING MACHINE AND HAVING A MESH WITH PERFORATIONS OF PREDETERMINED SIZE FOR SEPARATING SOLID MATERIALS LARGER THAN THE SIZE OF THE PERFORATIONS FROM SOLID MATERIALS AND PULP PARTICLES IN SAID SUSPENSION PASSABLE THROUGH THE MESH, SAID SCREEN BEING POSITIONED ALONG A DECLINE FROM A HIGHER INPUT END OF SAID SCREEN TO A LOWER DISCHARGE END AND BEING REVOLVABLE ABOUT AN AXIS PASSING THROUGH EACH OF SAID ENDS, A CONDUIT IN COMMUNICATION WITH THE SLUSHING MACHINE AND THE SCREEN, A PUMP CONNECTED TO THE CONDUIT INTERMEDIATE THE SLUSHING
References Cited (Backward Citations)
US2033123A
Cited
US612404A
Cited
US719582A
Cited
US1202504A
Cited
US2089215A
Cited
US2078235A
Cited
US2331455A
Cited
US2228185A
Cited
US2238962A
Cited
US2294060A
Cited
US2331135A
Cited
DE945831C
Cited
US2592215A
Cited
US2658453A
Cited
US2970776A
Cited
US2942731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |