Patent US3158043A successfully refreshed from Google Patents.
US3158043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep hole boring
Assignee: PATENTANWALT DR ING HELMUT JOO
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Filing: 1962-10-24
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Granted: 1964-11-24
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Burgsmueller Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:52
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/02; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF DEEP HOLE FORMING WHICH COMPRISES GRIPPING AND CONTINUOUSLY ROTATING A WORKPIECE, BRINGING A TOOL INTO ENGAGEMENT WITH THE WORKPIECE WHILE THE WORKPIECE IS BEING ROTATED, AND PROGRESSIVELY FRICTIONALLY GRIPPING AND MOVING THE TOOL INTO THE WORKPIECE AS THE WORKPIECE IS BEING ROTATED.
Claim 2
Independent Claim
45 words
THE METHOD OF DEEP HOLE FORMING WHICH COMPRISES GRIPPING AND CONTINUOUSLY ROTATING A WORKPIECE, BRINGING A TOOL INTO ENGAGEMENT WITH THE WORKPIECE WHILE THE WORKPIECE IS BEING ROTATED, AND PROGRESSIVELY FRICTIONALLY GRIPPING AND MOVING THE TOOL INTO THE WORKPIECE AS THE WORKPIECE IS BEING ROTATED.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |