US3288229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling slide for large holes with traversing bar concentric to the drill and automatic regulation of the drilling feed
Assignee: D'ETUDE ET DE CONSTRUCTION DE MACHINES POUR TOUTES INDUSTRIES Ste
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Filing: 1963-12-23
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Granted: 1966-11-29
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Chappuis Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/003; E21B7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A DRILLING APPARATUS COMPRISING A SUPPORT, A DRIVE SHAFT ROTATABLY MOUNTED ON SAID SUPPORT, A HOLLOW DRILL BIT MOUNTED OVER SAID SHAFT FOR LONGITUDINAL MOVEMENT WITH RESPECT THERETO, FIRST COUPLING MEANS COUPLING SAID BIT TO SAID SHAFT DURING ROTATION OF SAID SHAFT WHILE PERMITTING SAID LONGITUDINAL MOVEMENT, DRIVE MEANS EXTERNAL OF SAID SUPPORT, SECOND COUPLING MEANS COUPLING SAID DRIVE MEANS TO SAID SHAFT, MOUNTING MEANS MOUNTING AT LEAST A PORTION OF SAID SECOND COUPLING MEANS FOR PIVOTAL MOVEMENT IN SAID SUPPORT IN RESPONSE TO A PREDETERMINED CHANGE IN RESISTANCE TO DRILLING, FEEDING MEANS MOUNTED ON SAID SUPPORT FOR FEEDING SAID BIT ALONG SAID SUPPORT, AND SENSING MEANS MOUNTED ON SAID SUPPORT AND COOPERATING WITH SAID SECOND COUPLING MEANS AND SAID FEEDING MEANS TO REGULATE THE FEEDING OF SAID BIT IN RESPONSE TO PIVOTAL MOVEMENT OF SAID SECOND COUPLING MEANS.
Claim 2
Dependent Claim
139 words
A DRILLING APPARATUS COMPRISING A SUPPORT, A DRIVE SHAFT ROTATABLY MOUNTED ON SAID SUPPORT, A HOLLOW DRILL BIT MOUNTED OVER SAID SHAFT FOR LONGITUDINAL MOVEMENT WITH RESPECT THERETO, FIRST COUPLING MEANS COUPLING SAID BIT TO SAID SHAFT DURING ROTATION OF SAID SHAFT WHILE PERMITTING SAID LONGITUDINAL MOVEMENT, DRIVE MEANS EXTERNAL OF SAID SUPPORT, SECOND COUPLING MEANS COUPLING SAID DRIVE MEANS TO SAID SHAFT, MOUNTING MEANS MOUNTING AT LEAST A PORTION OF SAID SECOND COUPLING MEANS FOR PIVOTAL MOVEMENT IN SAID SUPPORT IN RESPONSE TO A PREDETERMINED CHANGE IN RESISTANCE TO DRILLING, FEEDING MEANS MOUNTED ON SAID SUPPORT FOR FEEDING SAID BIT ALONG SAID SUPPORT, AND SENSING MEANS MOUNTED ON SAID SUPPORT AND COOPERATING WITH SAID SECOND COUPLING MEANS AND SAID FEEDING MEANS TO REGULATE THE FEEDING OF SAID BIT IN RESPONSE TO PIVOTAL MOVEMENT OF SAID SECOND COUPLING MEANS.
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |