US3291301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Classifying apparatus and process
Assignee: General Mills Inc
•
Filing: 1963-10-28
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Granted: 1966-12-13
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 William A Brastad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN APPARATUS FOR CLASSIFYING PARTICULATE MATERIAL COMPRISING A FIRST AND SECOND FRACTION, SAID FIRST FRACTION BEING IN THE OPERATION OF SAID APPARATUS MORE SUSCEPTIBLE TO ELECTROSTATIC FORCE AS COMPARED TO SAID SECOND FRACTION THEREOF, SAID APPARATUS COMPRISING, IN COMBINATION: (A) A CARRYING MEMBER PRESENTING AN UPWARDLY DISPOSED CARRYING SURFACE FOR SAID MATERIAL, SAID MEMBER HAVING AN INFEED EDGE AND AN OUTFEED EDGE, (B) MEANS FOR ADMITTING MATERIAL ONTO SAID MEMBER PROXIMATE THE INFEED EDGE, (C) SAID OUTFEED EDGE PERMITTING SAID MATERIAL TO BE DISCHARGED FROM THE CARRYING MEMBER, (D) RECIPROCATING MEANS TO MOVE SAID CARRYING MEMBER CYCLICLY ALONG A PATH SUBSTANTIALLY PERPENDICULAR TO AN AXIS EXTENDING FROM THE INFEED EDGE TO THE OUTFEED EDGE, (E) A BARRIER POSITIONED ON SAID CARRYING SURFACE SO AS TO BE UPSTANDING FROM SAID SURFACE AT A PREDETERMINED GENERAL LOCATION ON SAID SURFACE, AND
Claim 2
Independent Claim
139 words
AN APPARATUS FOR CLASSIFYING PARTICULATE MATERIAL COMPRISING A FIRST AND SECOND FRACTION, SAID FIRST FRACTION BEING IN THE OPERATION OF SAID APPARATUS MORE SUSCEPTIBLE TO ELECTROSTATIC FORCE AS COMPARED TO SAID SECOND FRACTION THEREOF, SAID APPARATUS COMPRISING, IN COMBINATION: (A) A CARRYING MEMBER PRESENTING AN UPWARDLY DISPOSED CARRYING SURFACE FOR SAID MATERIAL, SAID MEMBER HAVING AN INFEED EDGE AND AN OUTFEED EDGE, (B) MEANS FOR ADMITTING MATERIAL ONTO SAID MEMBER PROXIMATE THE INFEED EDGE, (C) SAID OUTFEED EDGE PERMITTING SAID MATERIAL TO BE DISCHARGED FROM THE CARRYING MEMBER, (D) RECIPROCATING MEANS TO MOVE SAID CARRYING MEMBER CYCLICLY ALONG A PATH SUBSTANTIALLY PERPENDICULAR TO AN AXIS EXTENDING FROM THE INFEED EDGE TO THE OUTFEED EDGE, (E) A BARRIER POSITIONED ON SAID CARRYING SURFACE SO AS TO BE UPSTANDING FROM SAID SURFACE AT A PREDETERMINED GENERAL LOCATION ON SAID SURFACE, AND
References Cited (Backward Citations)
US1375741A
Cited
US2699869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |