US3751177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide pad mounting on a drill bit
Assignee: Santrade Ltd
•
Filing: 1970-11-20
•
Granted: 1973-08-07
•
Expires: 1990-11-20
Abstract
Abstract A drill has a guide pad pivotally mounted on it, on that the guide pad may adapt itself to the surface of a hole wherein the drill is being operated.
Inventors
- 👤 K Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:28
CPC Classifications
B; B23; B23D; B23D77/00; B23B; B23B51/00; B23B2251/00; B23B2251/02; B23B2251/56; B23B51/06; B23B51/063; Y; Y10; Y10S; Y10S408/00; Y10S408/705; Y10T; Y10T408/00; Y10T408/89; Y10T408/892; Y10T408/905; Y10T408/906; Y10T408/907
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
Drill for drilling in metal having a guide pad adapted to slide with frictional contact along the wall of the drill hole, in which the guide pad is pivotally rockable on at least one axis having the same general direction as the sliding surface of the guide pad and situated at a fixed distance from the drill axis.
Claim 2
Dependent Claim
58 words
Drill for drilling in metal having a guide pad adapted to slide with frictional contact along the wall of the drill hole, in which the guide pad is pivotally rockable on at least one axis having the same general direction as the sliding surface of the guide pad and situated at a fixed distance from the drill axis.
Claim 3
Dependent Claim
23 words
Drill as defined in claim 1, in which the guide pad is mounted on a sliding bearing with a curved sliding bearing surface.
Claim 4
Dependent Claim
19 words
Drill as defined in claim 1 in which the pivot comprises a cylindrical sliding bearing with a longitudinal axis.
Claim 5
Dependent Claim
20 words
Drill as defined in claim 3, in which the pivot comprises a second cylindrical sliding bearing with a transverse axis.
Claim 6
Dependent Claim
15 words
Drill as defined in claim 1 in which the pivot comprises a spherical sliding bearing.
Claim 7
Dependent Claim
27 words
Drill as defined in claim 1 having a guide pad on a longitudinal pivot axis, in which said axis lies outside the periphery surface of the pad.
Claim 8
Dependent Claim
38 words
Drill as defined in claim 1, in which the pivoted guide pad is rockable about longitudinal and transverse axes whereby said guide pad adapts itself to the surface of a hole in which said drill is being operated.
References Cited (Backward Citations)
US875664A
Cited
US874848A
Cited
AT66525B
Cited
DE321935C
Cited
GB271839A
Cited
US1866082A
Cited
GB313802A
Cited
US1745351A
Cited
US2151646A
Cited
US2647726A
Cited
FR1221024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |