Patent US3153833A successfully refreshed from Google Patents.
US3153833A
Expired / Lapsed
US
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Block making machine
Assignee: P A MACKIN
•
Filing: 1959-05-19
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Granted: 1964-10-27
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Expires: 1979-05-19
Abstract
No abstract record available.
Inventors
- 👤 Sr Carroll R Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30; B28B7/32; B28B3/00; B28B3/003; Y; Y10; Y10S; Y10S425/00; Y10S425/014; Y10S425/019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A BLOCK MAKING MACHINE COMPRISING A BASE, COLUMNS EXTENDING UPWARDLY FROM THE BASE, A BOTTOM DIE DISPOSED SLIDABLE UPON THE COLUMNS AND MEANS FOR LIFTING SAID BOTTOM DIE, A MOLD ALSO SLIDABLE UPON THE COLUMNS, AND MEANS FOR SUPPORTING SAID MOLD ABOVE THE BOTTOM DIE, SAID MOLD HAVING FOUR CAM SIDE MEMBERS WITH FOUR CAM FOLLOWING INSERT WALL MEMBERS, SAID WALL MEMBERS BEING VERTICALLY MOVABLE WITH RESPECT TO SAID CAM SIDE MEMBERS TO PRODUCE A RETRACTABLE PERIMETER MOLD WALL, SAID WALL MEMBERS HAVING AN INTERLOCK CONSTRUCTION WHEREIN EACH WALL MEMBER HAS A SIDE FLANGE MATED INTO A SLOT IN THE ADJACENT SIDE MEMBER SAID BOTTOM DIE BEING ENGAGEABLE WITH THE BOTTOM EDGES OF SAID FOUR INSERT WALL MEMBERS OF THE MOLD TO ENCLOSE THE BOTTOM OF THE SAME, A TOP DIE ON THE UPPER ENDS OF THE COLUMNS AND ENGAGEABLE WITH THE
Claim 2
Dependent Claim
142 words
A BLOCK MAKING MACHINE COMPRISING A BASE, COLUMNS EXTENDING UPWARDLY FROM THE BASE, A BOTTOM DIE DISPOSED SLIDABLE UPON THE COLUMNS AND MEANS FOR LIFTING SAID BOTTOM DIE, A MOLD ALSO SLIDABLE UPON THE COLUMNS, AND MEANS FOR SUPPORTING SAID MOLD ABOVE THE BOTTOM DIE, SAID MOLD HAVING FOUR CAM SIDE MEMBERS WITH FOUR CAM FOLLOWING INSERT WALL MEMBERS, SAID WALL MEMBERS BEING VERTICALLY MOVABLE WITH RESPECT TO SAID CAM SIDE MEMBERS TO PRODUCE A RETRACTABLE PERIMETER MOLD WALL, SAID WALL MEMBERS HAVING AN INTERLOCK CONSTRUCTION WHEREIN EACH WALL MEMBER HAS A SIDE FLANGE MATED INTO A SLOT IN THE ADJACENT SIDE MEMBER SAID BOTTOM DIE BEING ENGAGEABLE WITH THE BOTTOM EDGES OF SAID FOUR INSERT WALL MEMBERS OF THE MOLD TO ENCLOSE THE BOTTOM OF THE SAME, A TOP DIE ON THE UPPER ENDS OF THE COLUMNS AND ENGAGEABLE WITH THE
References Cited (Backward Citations)
US1017876A
Cited
US1433204A
Cited
US1919070A
Cited
GB439252A
Cited
US2289698A
Cited
US2358765A
Cited
US2542874A
Cited
US2741007A
Cited
US2595286A
Cited
US2729871A
Cited
US2875499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |