US3099311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure and apparatus for making drums and the like
Assignee: Grotnes Machine Works Inc
•
Filing: 1959-11-02
•
Granted: 1963-07-30
•
Expires: 1979-11-02
Abstract
No abstract record available.
Inventors
- 👤 Oscar J Van Leer
- 👤 Ragettli Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:26
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10; B21D22/12; B21D22/125; B21D15/00; B21D15/04; B21D15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A DRUM MAKING MACHINE FOR FORMING ANNULAR BEADS IN A CYLINDRICAL BLANK, THE COMBINATION COMPRISING A FRAME, A PLURALITY OF SEGMENTED ANNULAR DIES IN SAID FRAME, A CYLINDRICAL RUBBER BAD CENTERED WITH RESPECT TO SAID DIES, A CENTRAL POST EXTENDING THE LENGTH OF THE RUBBER BAG FOR SUPPORTING THE LATTER, MEANS FOR SEALING THE BAG TO THE POST TOP AND BOTTOM, MEANS FOR APPLYING HYDRAULIC PRESSURE WITHIN SAID BAG SO THAT THE BLANK IS EXPANDED OUTWARDLY TO TAKE THE FORM OF SAID DIES, SAID DIES BEING FLOATINGLY MOUNTED ON SAID FRAME SO THAT THEY ARE FREE TO AXIALLY APPROACH ONE ANOTHER FOR FORESHORTENING OF THE
Claim 2
Dependent Claim
106 words
IN A DRUM MAKING MACHINE FOR FORMING ANNULAR BEADS IN A CYLINDRICAL BLANK, THE COMBINATION COMPRISING A FRAME, A PLURALITY OF SEGMENTED ANNULAR DIES IN SAID FRAME, A CYLINDRICAL RUBBER BAD CENTERED WITH RESPECT TO SAID DIES, A CENTRAL POST EXTENDING THE LENGTH OF THE RUBBER BAG FOR SUPPORTING THE LATTER, MEANS FOR SEALING THE BAG TO THE POST TOP AND BOTTOM, MEANS FOR APPLYING HYDRAULIC PRESSURE WITHIN SAID BAG SO THAT THE BLANK IS EXPANDED OUTWARDLY TO TAKE THE FORM OF SAID DIES, SAID DIES BEING FLOATINGLY MOUNTED ON SAID FRAME SO THAT THEY ARE FREE TO AXIALLY APPROACH ONE ANOTHER FOR FORESHORTENING OF 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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |