Patent US4184754A successfully refreshed from Google Patents.
Patent US3667768A successfully refreshed from Google Patents.
US3667768A
Expired / Lapsed
US
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Holder for spade drill
Assignee: Allied Machine and Engineering Corp
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Filing: 1970-04-09
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Granted: 1972-06-06
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Expires: 1990-04-09
Abstract
Abstract A HOLDER FOR A SPADE DRILL. THE HOLDER HAS THE USUAL BIFURCATED END FOR RECEIVING THE SPADE DRILL AND THE USUAL CLAMPING SCREW LOCATED THROUGH THE BIFURCATED END OF THE HOLDER AND THROUGH THE USUAL RELATIVELY LARGE APERTURE IN THE SPADE DRILL FOR FRICTIONALLY CLAMPING THE SPADE DRILL BETWEEN THE FURCATIONS OF THE HOLDER. A SETSCREW WITH CONICAL END IS LOCATED THROUGH A DIAMETRICALLY DISPOSED TAPPED OPENING IN ONE OF THE FURCATIONS, THE CONICAL END OF THE SETSCREW BEING RECEIVED IN THE APERTURE IN THE BLADE DRILL IN CONTACT WITH THE USUAL BEVELLED EDGE AT THE REAR SIDE OF SAID APERTURE, FOR HOLDING THE BLADE DRILL AGAINST ACCIDENTAL MOVEMENT IN THE HOLDER.
Inventors
- 👤 William H Stokey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/0002; B23B51/0003; B23B51/00035; B23B2260/00; B23B2260/004; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17821; Y10T279/17846; Y10T408/00; Y10T408/94; Y10T408/95
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |