US2701067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retort charging machine
Assignee: National Zinc Co Inc
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Filing: 1952-05-22
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Granted: 1955-02-01
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Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 Carl G Harbordt
- 👤 Bern F Buff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:34
CPC Classifications
C; C22; C22B; C22B19/00; C22B19/04; C22B19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A MACHINE FOR CHARGING A RETORT OF A ZINC FURNACE, A LOWER TRUCK MOUNTED FOR MOVEMENT PARALLEL TO THE FRONT OF SAID FURNACE, A TRACK CARRIED BY SAID TRUCK IN PARALLEL RELATION WITH THE AXES OF SAID RETORTS, AN UPPER TRUCK MOUNTED ON SAID TRACK FOR MOVEMENT THEREALONG, A SCREW BOX ASSEMBLY MOUNTED ON SAID TRACK AHEAD OF SAID TRUCK FOR MOVEMENT THEREALONG, A CHARGING SCREW CARRIED BY SAID TRUCK TO EXTEND THROUGH SAID SCREW BOX ASSEMBLY, A MOTOR CARRIED BY SAID TRUCK OPERABLE TO MOVE SAID TRUCK ALONG SAID TRACK, A PUSHER ROD CARRIED BY SAID TRUCK EXTENDING FORWARDLY TO ENGAGE A TRIP MECHANISM CARRIED BY SAID SCREW BOX AS-
Claim 2
Dependent Claim
111 words
A MACHINE FOR CHARGING A RETORT OF A ZINC FURNACE, A LOWER TRUCK MOUNTED FOR MOVEMENT PARALLEL TO THE FRONT OF SAID FURNACE, A TRACK CARRIED BY SAID TRUCK IN PARALLEL RELATION WITH THE AXES OF SAID RETORTS, AN UPPER TRUCK MOUNTED ON SAID TRACK FOR MOVEMENT THEREALONG, A SCREW BOX ASSEMBLY MOUNTED ON SAID TRACK AHEAD OF SAID TRUCK FOR MOVEMENT THEREALONG, A CHARGING SCREW CARRIED BY SAID TRUCK TO EXTEND THROUGH SAID SCREW BOX ASSEMBLY, A MOTOR CARRIED BY SAID TRUCK OPERABLE TO MOVE SAID TRUCK ALONG SAID TRACK, A PUSHER ROD CARRIED BY SAID TRUCK EXTENDING FORWARDLY TO ENGAGE A TRIP MECHANISM CARRIED BY SAID SCREW BOX AS-
References Cited (Backward Citations)
US2270381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |