US3559258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for burnishing a bore
Assignee: Halliburton Co
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Filing: 1969-01-29
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Granted: 1971-02-02
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Expires: 1989-01-29
Abstract
Abstract A TOOL FOR BURNISHING AND WORK HARDENING A BORE COMPRISING AN ELONGATED FEXIBLE BODY HAVING NARROW ROTATABLE ROLLERS POSITIONED AROUND THE PERIPHERY THEREOF. ONE OF SAID ROTATABLE ROLLERS IS ADJUSTABLE IN DIRECTIONS PERPENDICULAR TO THE AXIS OF SAID BODY SO THAT IT MAY BE LOCKED IN A POSITION AGAINST THE BORE CAUSING THE BODY TO DEFLECT AND THE OTHER ROLLERS TO CONTACT THE BORE. THE BORE TO BE BURNISHED IS ROTATED WHILE THE TOOL IS MOVED PROGRESSIVELY ALONG THE BORE. WHEN THE TOOL HAS PASSED THROUGH THE BORE THEREBY BURNISHING THE BORE, THE AD- JUSTABLE ROLLER IS RETRACTED ALLOWING THE TOOL TO BE REMOVED WITHOUT SCRATCHING THE BURNISHED SURFACE OF THE BORE.
Inventors
- 👤 William A Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:37
CPC Classifications
B; B24; B24B; B24B39/00; B24B39/02; B24B39/023; Y; Y10; Y10T; Y10T29/00; Y10T29/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |