US3348818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for blending dry materials
Assignee: A&T Development Corp
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Filing: 1965-02-12
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Granted: 1967-10-24
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Expires: 1985-02-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Avril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:31
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/80; B01F25/84; B01F33/00; B01F33/80; B01F33/805; B01F33/8052; B28; B28C; B28C5/00; B28C5/02; B28C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF BLENDING A COMBINATION OF DRY MATERIALS, EITHER OF UNIFORM OR OF VARYING PARTICLE SIZES AND OF DIFFERENT SPECIFIC GRAVITIES COMPRISING THE STEPS OF: PROVIDING A GENERALLY CONE-SHAPED DIAPHRAGM FORMED OF FLEXIBLE MATERIAL AND NORMALLY DEPRESSED TO AN INVERTED RECEIVING POSITION TO FORM A VESSEL, WITH THE APEX OF THE CONE-SHAPED DIAPHRAGM DISPOSED AT THE LOWER END THEREOF; FEEDING SAID COMBINATION OF DRY MATERIALS IN METERED QUANTITIES INTO SAID CONE-SHAPED DIAPHRAGM, WITH THE DIAPHRAGM IN SAID INVERTED RECEIVING POSITION FORMING SAID VESSEL; SHIFTING SAID DIAPHRAGM FROM SAID INVERTED RECEIVING POSITION TO AN ERECTED UPRIGHT POSITION WITH THE APEX OF THE CONE AT THE UPPER END THEREOF, THEREBY TO PROPEL THE MATERIAL FROM THE DIAPHRAGM; AND THEREAFTER COLLECTING SAID COMBINATION OF BLENDED DRY MATERIALS.
Claim 2
Independent Claim
125 words
A METHOD OF BLENDING A COMBINATION OF DRY MATERIALS, EITHER OF UNIFORM OR OF VARYING PARTICLE SIZES AND OF DIFFERENT SPECIFIC GRAVITIES COMPRISING THE STEPS OF: PROVIDING A GENERALLY CONE-SHAPED DIAPHRAGM FORMED OF FLEXIBLE MATERIAL AND NORMALLY DEPRESSED TO AN INVERTED RECEIVING POSITION TO FORM A VESSEL, WITH THE APEX OF THE CONE-SHAPED DIAPHRAGM DISPOSED AT THE LOWER END THEREOF; FEEDING SAID COMBINATION OF DRY MATERIALS IN METERED QUANTITIES INTO SAID CONE-SHAPED DIAPHRAGM, WITH THE DIAPHRAGM IN SAID INVERTED RECEIVING POSITION FORMING SAID VESSEL; SHIFTING SAID DIAPHRAGM FROM SAID INVERTED RECEIVING POSITION TO AN ERECTED UPRIGHT POSITION WITH THE APEX OF THE CONE AT THE UPPER END THEREOF, THEREBY TO PROPEL THE MATERIAL FROM THE DIAPHRAGM; AND THEREAFTER COLLECTING SAID COMBINATION OF BLENDED DRY MATERIALS.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |