US3291302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveying and separating appartus and process
Assignee: General Mills Inc
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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
2026-11-02 13:18
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
AN APPARATUS FOR CONVEYING PARTICULATE MATERIAL, SAID APPARATUS COMPRISING: (A) A LOWER ELECTRODE HAVING AN UPWARDLY DISPOSED CARRYING SURFACE FOR SAID MATERIAL, SAID ELECTRODE HAVING A FEED END AND A DISCHARGE END, (B) MEANS FOR ADMITTING MATERIAL ONTO SAID ELECTRODE AT THE FEED END, (C) SAID DISCHARGE END PERMITTING SAID MATERIAL TO BE DISCHARGED FROM SAID ELECTRODE, (D) RECIPROCATING MEANS TO MOVE SAID LOWER ELECTRODE CYCLICLY ALONG A PREDETERMINED PATH HAVING A SUBSTANTIAL HORIZONTAL PATH COMPONENT WITH SUFFICIENT ACCELERATION TO AT LEAST CAUSE SLIDING OF SAID MATERIAL WITH RESPECT TO SAID CARRYING SURFACE, (E) AN UPPER ELECTRODE, (F) MEANS FOR POSITIONING SAID UPPER ELECTRODE GENERALLY ABOVE SAID LOWER ELECTRODE, (G) MEANS FOR ENERGIZING SAID UPPER ELECTRODE THEREBY ESTABLISHING AN ELECTROSTATIC FIELD BETWEN SAID ELECTRODES, THE LINES OF FORCE OF SAID FIELD HAVING A SUBSTANTIAL COMPONENT PERPENDICULAR TO SAID CARRYING SURFACE OF SAID LOWER ELECTRODE, AND (H) MEANS OPERATIVELY CONNECTED TO THE ENERGIZING MEANS FOR CYCLICLY ESTABLISHING A VOLTAGE OF A PREDETERMINED INTENSITY BETWEEN SAID ELECTRODES ONLY DURING A SELECTED PORTION OF EACH CYCLE OF MOVEMENT OF SAID LOWER ELECTRODE, SAID VOLTAGE BEING ESTABLISHED IN TIMED RELATIONSHIP WITH THE RECIPROCATING MEANS AND CAUSING AN ELECTROSTATIC FORCE OF A PREDETERMINED INTENSITY TO BE EXERTED ON SAID MATERIAL.
Claim 2
Independent Claim
205 words
AN APPARATUS FOR CONVEYING PARTICULATE MATERIAL, SAID APPARATUS COMPRISING: (A) A LOWER ELECTRODE HAVING AN UPWARDLY DISPOSED CARRYING SURFACE FOR SAID MATERIAL, SAID ELECTRODE HAVING A FEED END AND A DISCHARGE END, (B) MEANS FOR ADMITTING MATERIAL ONTO SAID ELECTRODE AT THE FEED END, (C) SAID DISCHARGE END PERMITTING SAID MATERIAL TO BE DISCHARGED FROM SAID ELECTRODE, (D) RECIPROCATING MEANS TO MOVE SAID LOWER ELECTRODE CYCLICLY ALONG A PREDETERMINED PATH HAVING A SUBSTANTIAL HORIZONTAL PATH COMPONENT WITH SUFFICIENT ACCELERATION TO AT LEAST CAUSE SLIDING OF SAID MATERIAL WITH RESPECT TO SAID CARRYING SURFACE, (E) AN UPPER ELECTRODE, (F) MEANS FOR POSITIONING SAID UPPER ELECTRODE GENERALLY ABOVE SAID LOWER ELECTRODE, (G) MEANS FOR ENERGIZING SAID UPPER ELECTRODE THEREBY ESTABLISHING AN ELECTROSTATIC FIELD BETWEN SAID ELECTRODES, THE LINES OF FORCE OF SAID FIELD HAVING A SUBSTANTIAL COMPONENT PERPENDICULAR TO SAID CARRYING SURFACE OF SAID LOWER ELECTRODE, AND (H) MEANS OPERATIVELY CONNECTED TO THE ENERGIZING MEANS FOR CYCLICLY ESTABLISHING A VOLTAGE OF A PREDETERMINED INTENSITY BETWEEN SAID ELECTRODES ONLY DURING A SELECTED PORTION OF EACH CYCLE OF MOVEMENT OF SAID LOWER ELECTRODE, SAID VOLTAGE BEING ESTABLISHED IN TIMED RELATIONSHIP WITH THE RECIPROCATING MEANS AND CAUSING AN ELECTROSTATIC FORCE OF A PREDETERMINED INTENSITY TO BE EXERTED ON SAID MATERIAL.
References Cited (Backward Citations)
US1375741A
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 |