US2743911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of producing filling materials to be used together with hydraulic cements
Assignee: Individual
•
Filing: 1953-02-18
•
Granted: 1956-05-01
•
Expires: 1973-02-18
Abstract
No abstract record available.
Inventors
- 👤 Lejmark Karl Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/34; B28C5/36; B01; B01F; B01F33/00; B01F33/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF SIMULTANEOUSLY CONVEYING AND AERATING A COMMINUTED LIGHT WEIGHT MATERIAL, SUCH AS WOOD WASTE, AND MIXING THE SAME WITH A BINDING MATERIAL, CONSISTING IN FEEDING THE MATERIAL TO THE BOTTOM END OF AN INCLINED CHUTE AND SUBJECTING THE MATERIAL TO THE IMPACT OF A SUCCESSION OF SPACED UPWARDLY TRAVELING SCRAPERS, THEREBY PRODUCING UPWARD MOVEMENT OF THE MATERIAL, CAUSING THE SCRAPERS TO TRAVEL AT A SPEED ABOVE THAT ASSUMED BY THE MATERIAL AND TO CUT THROUGH AND THEREBY AGITATE THE MATERIAL IN THEIR PASSAGE, INTRODUCING INTO THE MOVING AND AGITATED STREAM OF MATERIAL A QUANTITY OF BINDING MATERIAL TO BE MIXED THEREWITH, AND UTILIZING THE MOVING STREAM TO DETERMINE THE RATE OF ADDITION OF THE BINDING MATERIAL.
Claim 2
Independent Claim
118 words
THE METHOD OF SIMULTANEOUSLY CONVEYING AND AERATING A COMMINUTED LIGHT WEIGHT MATERIAL, SUCH AS WOOD WASTE, AND MIXING THE SAME WITH A BINDING MATERIAL, CONSISTING IN FEEDING THE MATERIAL TO THE BOTTOM END OF AN INCLINED CHUTE AND SUBJECTING THE MATERIAL TO THE IMPACT OF A SUCCESSION OF SPACED UPWARDLY TRAVELING SCRAPERS, THEREBY PRODUCING UPWARD MOVEMENT OF THE MATERIAL, CAUSING THE SCRAPERS TO TRAVEL AT A SPEED ABOVE THAT ASSUMED BY THE MATERIAL AND TO CUT THROUGH AND THEREBY AGITATE THE MATERIAL IN THEIR PASSAGE, INTRODUCING INTO THE MOVING AND AGITATED STREAM OF MATERIAL A QUANTITY OF BINDING MATERIAL TO BE MIXED THEREWITH, AND UTILIZING THE MOVING STREAM TO DETERMINE THE RATE OF ADDITION OF THE BINDING MATERIAL.
References Cited (Backward Citations)
US1473445A
Cited
US2031369A
Cited
US2264170A
Cited
US2533852A
Cited
US2557623A
Cited
US2539904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |