Patent US3248023A successfully refreshed from Google Patents.
US3248023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Taphole gun with moving cylinder
Assignee: Dango and Dienenthal KG
•
Filing: 1964-11-13
•
Granted: 1966-04-26
•
Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Dienenthal Herbert
- 👤 Zimmermann Theodor
- 👤 Ullrich Alois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/015; C; C21; C21B; C21B7/00; C21B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A TAPHOLE GUN COMPRISING A CYLINDER OF HOLDING A PLUGGING COMPOUND, AN IMPREVIOUS PISTON IN THE CYLINDER FOR EJECTING THE COMPOUND THEREFROM, A STATIONARY HOUSING AXIALLY ALIGNED WITH THE CYLINDER AND HAVING AN END WALL SEPARATING SAID HOUSING FROM THE CYLINDER, HYDRAULIC DRIVE MEANS LOCATED IN SAID HOUSING AND COMPRISING A HYDRAULIC CYLINDER AND A HYDRAULIC PISTON WITHIN SAID HYDRAULIC CYLINDER, SAID HYDRAULIC PISTON BEING FIXED TO A STATIONARY PISTON ROD EXTENDING COAXIALLY TO SAID HYDRAULIC CYLINDER, SAID HYDRAULIC CYLINDER BEING SLIDABLE ON SAID HYDRAULIC PISTON AND THROUGH AN OPENING IN SAID END WALL OF SAID HOUSING, THE COMPOUND-EJECTING PISTON BEING FIXED TO SAID HYDRAULIC CYLINDER AT AN END THEREOF REMOTE FROM SAID STATIONARY PISTON ROD AND BEING MOVABLE WITH SAID HYDRAULIC CYLINDER AS IT SLIDES THROUGH SAID OPENING.
Claim 2
Dependent Claim
129 words
A TAPHOLE GUN COMPRISING A CYLINDER OF HOLDING A PLUGGING COMPOUND, AN IMPREVIOUS PISTON IN THE CYLINDER FOR EJECTING THE COMPOUND THEREFROM, A STATIONARY HOUSING AXIALLY ALIGNED WITH THE CYLINDER AND HAVING AN END WALL SEPARATING SAID HOUSING FROM THE CYLINDER, HYDRAULIC DRIVE MEANS LOCATED IN SAID HOUSING AND COMPRISING A HYDRAULIC CYLINDER AND A HYDRAULIC PISTON WITHIN SAID HYDRAULIC CYLINDER, SAID HYDRAULIC PISTON BEING FIXED TO A STATIONARY PISTON ROD EXTENDING COAXIALLY TO SAID HYDRAULIC CYLINDER, SAID HYDRAULIC CYLINDER BEING SLIDABLE ON SAID HYDRAULIC PISTON AND THROUGH AN OPENING IN SAID END WALL OF SAID HOUSING, THE COMPOUND-EJECTING PISTON BEING FIXED TO SAID HYDRAULIC CYLINDER AT AN END THEREOF REMOTE FROM SAID STATIONARY PISTON ROD AND BEING MOVABLE WITH SAID HYDRAULIC CYLINDER AS IT SLIDES THROUGH SAID OPENING.
References Cited (Backward Citations)
CA592394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |