US3202228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill apparatus and drill bit for enlarging apertures
Assignee: Individual
•
Filing: 1963-01-30
•
Granted: 1965-08-24
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Allan C Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/28; E21B10/00; E21B10/26; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5621; Y10T408/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A DRILLING APPARATUS COMPRISING AN ELONGATED DRIVE MEMBEER HAVING MEANS ON ONE END PORTION TO ADVANCE SAID MEMBER UPON TURNING SAME AND A CUTTING BIT MOUNTED ON A CENTRAL PORTION TO TURN THEREWITH, SAID CUTTING BIT BEING TAPERED INWARDLY AND FORWARDLY AND HAVING SPACED CUTTING EDGES THEREALONG, A MEANS TO ADVANCE SAID DRIVE MEMBER AND CUTTING BIT INTO MATERIAL BEING DRILLED, SAID MEANS TO ADVANCE HAVING A PORTION IN ENGAGEMENT WITH SAID MEANS ON SAID ROD TO ADVANCE SAME, AND AN ABUTMENT SURFACE LOCATED BETWEEN SAID PORTION IN
Claim 2
Dependent Claim
88 words
A DRILLING APPARATUS COMPRISING AN ELONGATED DRIVE MEMBEER HAVING MEANS ON ONE END PORTION TO ADVANCE SAID MEMBER UPON TURNING SAME AND A CUTTING BIT MOUNTED ON A CENTRAL PORTION TO TURN THEREWITH, SAID CUTTING BIT BEING TAPERED INWARDLY AND FORWARDLY AND HAVING SPACED CUTTING EDGES THEREALONG, A MEANS TO ADVANCE SAID DRIVE MEMBER AND CUTTING BIT INTO MATERIAL BEING DRILLED, SAID MEANS TO ADVANCE HAVING A PORTION IN ENGAGEMENT WITH SAID MEANS ON SAID ROD TO ADVANCE SAME, AND AN ABUTMENT SURFACE LOCATED BETWEEN SAID PORTION IN
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |