Patent US3121769A successfully refreshed from Google Patents.
US3121769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for opening the tap hole of a metallurgical furnace
Assignee: —
•
Filing: —
•
Granted: 1964-02-18
•
Expires: 1981-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:17
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; B; B23; B23B; B23B39/00; B23B41/00; B28; B28D; B28D1/00; B28D1/14; C; C21; C21B; C21B7/00; C21B7/12; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
APPARATUS FOR TAPPING A WALL OF A METALLURGICAL FURNACE, COMPRISING MOUNTING MEANS FORMING A LINEAR GUIDE TRACK, A DRILLING MACHINE CARRIED BY SAID MOUNTING MEANS FOR REVERSIBLE DISPLACEMENT ALONG SAID TRACK, MOTOR MEANS ON SAID MOUNTING MEANS COUPLED WITH SAID DRILLING MACHINE FOR EFFECTING THE REVERSIBLE DISPLACEMENT THEREOF, STATIONARY SUPPORTING MEANS, SUSPENSION MEANS FOR SAID MOUNTING MEANS ON SAID SUPPORTING MEANS AND MECHANISM ON SAID SUPPORTING MEANS COUPLED WITH SAID SUSPENSION MEANS FOR SELECTIVELY DISPLACING SAID MOUNTING MEANS INTO AN OPERATIVE POSITION AND AN INOPERATIVE POSITION, AND LATCH MEANS SWINGABLY SECURED TO SAID DRILLING MACHING FOR NORMALLY HOLDING AN ELONGATED BORING TOOL IN ENGAGEMENT WITH SAID DRILLING MACHINE FOR ACTUA-
Claim 2
Dependent Claim
110 words
APPARATUS FOR TAPPING A WALL OF A METALLURGICAL FURNACE, COMPRISING MOUNTING MEANS FORMING A LINEAR GUIDE TRACK, A DRILLING MACHINE CARRIED BY SAID MOUNTING MEANS FOR REVERSIBLE DISPLACEMENT ALONG SAID TRACK, MOTOR MEANS ON SAID MOUNTING MEANS COUPLED WITH SAID DRILLING MACHINE FOR EFFECTING THE REVERSIBLE DISPLACEMENT THEREOF, STATIONARY SUPPORTING MEANS, SUSPENSION MEANS FOR SAID MOUNTING MEANS ON SAID SUPPORTING MEANS AND MECHANISM ON SAID SUPPORTING MEANS COUPLED WITH SAID SUSPENSION MEANS FOR SELECTIVELY DISPLACING SAID MOUNTING MEANS INTO AN OPERATIVE POSITION AND AN INOPERATIVE POSITION, AND LATCH MEANS SWINGABLY SECURED TO SAID DRILLING MACHING FOR NORMALLY HOLDING AN ELONGATED BORING TOOL IN ENGAGEMENT WITH SAID DRILLING MACHINE FOR ACTUA-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |