US3286409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honing machine
Assignee: Barnes Drill Co
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Filing: 1964-03-27
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Granted: 1966-11-22
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Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Donald K Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:33
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
IN A MACHINE FOR ROUGH AND FINISH HONING THE WALL OF A BORE IN A WORKPIECE IN A SUBSTANTIALLY CONTINUOUS HONING CYCLE, THE COMBINATION OF, AN EXPANSIBLE HONING TOOL, DRIVE MECHANISM FOR ROTATING SAID TOOL AND SIMULTANEOUSLY RECIPROCATING THE SAME BACK AND FORTH THROUGH SAID BORE, FEED MECHANISM FOR EXPANDING SAID TOOL AT A FIRST RATE SUFFICIENT TO MAINTAIN ROUGH HONING PRESSURE ON SAID BORE WALL AND THEN AT A SECOND SLOWER RATE TO FINISH HONE SAID WALL, AND A SUCCESSIVELY ACTING SIZING DEVICE INCLUDING FIRST MEANS FOR SENSING THE ATTAINMENT OF A FIRST PREDETERMINED BORE SIZE AND CONTROLLING SAID FEED MECHANISM TO TERMINATE THE ROUGH HONING ACTION AND INITIATE THE FINISH HONING, AND SECOND MEANS FOR SENSING THE SUBSEQUENT ATTAINMENT OF A SECOND PREDETERMINED BORE SIZE LARGER THAN SAID FIRST SIZE AND CONTROLLING SAID MECHANISM TO INITIATE TERMINATION OF SAID FINISH HONING ACTION AND THE HONING CYCLE.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |