Patent US3762828A successfully refreshed from Google Patents.
US3762828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill with guide device
Assignee: Sandvik AB
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Filing: 1971-09-07
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Granted: 1973-10-02
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Expires: 1991-09-07
Abstract
Abstract A drilling tool comprising a drill head fixed to a rotatable drill shaft is provided with a special guide device consisting essentially of roller bodies (balls or rollers) retained in bearing rings positioned on the drill shaft adjacent to the drill head. The position of the roller bodies can be adjusted so that they bear with selected pressure against the surface of a drill hole thereby plastically working such surface.
Inventors
- 👤 K Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:34
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0486; B23B51/0493; B23D; B23D77/00; B23D77/02; B23D77/04; B23D77/042; B23B2251/00; B23B2251/56; B23B2251/58; B23B2260/00; B23B2260/022; B23B2270/00; B23B2270/34; B23B51/06; B23B51/063; B23D2277/00; B23D2277/20; B23D2277/201; B23D2277/46; Y; Y10; Y10S; Y10S408/00; Y10S408/705; Y10T; Y10T29/00; Y10T29/47; Y10T407/00; Y10T407/10; Y10T408/00; Y10T408/55; Y10T408/557; Y10T408/558; Y10T408/5583; Y10T408/5586; Y10T408/89; Y10T408/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A tool for machining a metal object, said tool comprising a rotatable drill holder in the form of a drill shaft; a drill head adapted to said drill holder; said drill head having at least one guide pad; at least one separate guide device on said drill shaft, said guide device comprising at least one ring supporting roller bodies adapted to run against the surface of a bore hole in such object, said guide device having annular means for adjusting the axial position of said ring with respect to said drill head, said adjusting means comprising a spacer, a lock washer and a shaft nut.
Claim 2
Dependent Claim
105 words
A tool for machining a metal object, said tool comprising a rotatable drill holder in the form of a drill shaft; a drill head adapted to said drill holder; said drill head having at least one guide pad; at least one separate guide device on said drill shaft, said guide device comprising at least one ring supporting roller bodies adapted to run against the surface of a bore hole in such object, said guide device having annular means for adjusting the axial position of said ring with respect to said drill head, said adjusting means comprising a spacer, a lock washer and a shaft nut.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |