US3153833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block making machine
Assignee: P A MACKIN
•
Filing: 1959-05-19
•
Granted: 1964-10-27
•
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 07:32
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
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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 |