US3618429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum cap removing tool
Assignee: Individual
•
Filing: 1969-09-03
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Granted: 1971-11-09
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Expires: 1989-09-03
Abstract
Abstract A TOOL FOR REMOVING A CAP FROM A DRUM HAS A BASE WITH A CENTRAL APERATURE ALONG THE AXIS OF WHICH A PLUNGER IS MOVED. FROM THE SIDES OF THE PLUNGER A PLURALITY OF JAWS HAVING SHARP ENDS MOVE RADIALLY OUTWARD TO BITE INTO THE ANNULAR WALL OF THE CAP. A SPRING RESISTS THE JAW MOVEMENT. THE PLUNGER END IS A DIE TO ABUT HE CENTRAL PART OF THE CAP AND STRETCH AND DEFORM THE CAP MATERIAL BETWEEN THE JAWS AND THE PLUNGER THUS PULLING THE CAP WALL OUT FROM A RETAINING BEAD ON THE DRUM. THE JAWS CAN TIP SLIGHTLY FOR CAP DISENGAGEMENT.
Inventors
- 👤 Joseph E Froeliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49821
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |