Patent US3237350A successfully refreshed from Google Patents.
US3237350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic honing method
Assignee: Barnes Drill Co
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Filing: 1965-03-04
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Granted: 1966-03-01
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Mark R Estabrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:42
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/02; B24B33/022
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
THE METHOD OF ROUGH AND FINISH HONING A WORK BORE WALL RECIPROCATING A RADIALLY EXPANSIBLE AND CONTRACTIBLE HONING TOOL BACK AND FORTH ALONG THE WALL WHILE THE TOOL IS BEING ROTATED, SAID METHOD INCLUDING THE STEPS OF, BRINGING THE TOOL INTO CONTACT WITH THE BORE WALL, GRADUALLY EXPANDING THE TOOL WITHIN THE BORE TO MAINTAIN HIGH PRESSURE ENGAGEMENT WITH THE BORE WHILE RECIPROCATING THE TOOL AT A RELATIVELY RAPID RATE AND ROTATING THE TOOL TO ROUGH HONE THE WALL UNTIL THE LATTER ATTAINS THE DESIRED SIZE, AND THEN REDUCING THE PRESSURE BETWEEN THE TOOL AND THE WALL AND RECIPROCATING THE TOOL AT A SLOWER RATE TO POLISH THE WALL.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |