US3209057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure molding of dry material
Assignee: Benjamin Lassman and Son Inc
•
Filing: 1962-06-04
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Granted: 1965-09-28
•
Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Lassman Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/02; B28B7/00; B28B7/16; B28B7/28; B28B7/40; B28B7/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
METHOD OF DRY PRESS MOLDING OF RELATIVELY DRY PARTICULATE MATERIALS, COMPRISING, IN COMBINATION, DUMP CHARGING RELATIVELY DRY NON-ADHERENT PARTICLES OF MATERIAL TO BE MOLDED INTO A MOLDING CAVITY, DRIVING AIR OUT OF SAID CAVITY AND FROM AMONG SAID PARTICLES LATERALLY OUTWARDLY FROM SAID CAVITY BY SAID CHARGING OF SAID PARTICLES TO SHORTEN CHARGING TIME AND INHIBIT ENTRAPMENT OF AIR AMONG SAID PARTICLES IN SAID CAVITY, SAID DRIVING OCCURRING SUBSTANTIALLY SIMULTANEOUSLY ENTIRELY AROUND SAID CAVITY AND SUBSTANTIALLY OVER THE HEIGHT THEREOF REACHED BY SAID PARTICLES IN THE COURSE OF A CHARGING OPERATION, SAID DRIVING FURTHER OCCURRING SOLELY TO THE ATMOSPHERE THROUGH OPENINGS LOCATED TRANSVERSELY OF THE GENERAL DIRECTION OF MOVEMENT OF SAID PARTICLES AND SMALLER THAN THE MAJORITY PARTICLE SIZE OF THE DRY PARTICULATE MATERIAL,
Claim 2
Dependent Claim
124 words
METHOD OF DRY PRESS MOLDING OF RELATIVELY DRY PARTICULATE MATERIALS, COMPRISING, IN COMBINATION, DUMP CHARGING RELATIVELY DRY NON-ADHERENT PARTICLES OF MATERIAL TO BE MOLDED INTO A MOLDING CAVITY, DRIVING AIR OUT OF SAID CAVITY AND FROM AMONG SAID PARTICLES LATERALLY OUTWARDLY FROM SAID CAVITY BY SAID CHARGING OF SAID PARTICLES TO SHORTEN CHARGING TIME AND INHIBIT ENTRAPMENT OF AIR AMONG SAID PARTICLES IN SAID CAVITY, SAID DRIVING OCCURRING SUBSTANTIALLY SIMULTANEOUSLY ENTIRELY AROUND SAID CAVITY AND SUBSTANTIALLY OVER THE HEIGHT THEREOF REACHED BY SAID PARTICLES IN THE COURSE OF A CHARGING OPERATION, SAID DRIVING FURTHER OCCURRING SOLELY TO THE ATMOSPHERE THROUGH OPENINGS LOCATED TRANSVERSELY OF THE GENERAL DIRECTION OF MOVEMENT OF SAID PARTICLES AND SMALLER THAN THE MAJORITY PARTICLE SIZE OF THE DRY PARTICULATE MATERIAL,
References Cited (Backward Citations)
US1925050A
Cited
US2026940A
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US2218196A
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US2209404A
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US2348197A
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Cited
US2527537A
Cited
US2522298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |