US3703055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill sharpening device
Assignee: Individual
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Filing: 1971-01-25
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Granted: 1972-11-21
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Expires: 1991-01-25
Abstract
Abstract The invention relates to a drill sharpening jig in which the drill is held for grinding against a wheel by a pivotable support which has a table with an edge against which the flute edges of the drill are held, a holder and a stop for the chuck end of the drill, the support causing the drill tip to generate a conical surface for producing a progressively increasing clearance angle for the drill cutting edges.
Inventors
- 👤 Samuel Niquet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/24; B24B3/247
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A drill sharpening jig used in combination with an abrasive wheel, comprising a pivot which is mounted with its axis parallel to the wheel axis, an elongated support rigid with said pivot at an angle thereto, a table having a base and a platform angularly adjustably secured thereto, said base secured to said support and adjustable along the same, the platform having a free-standing resilient strip with a straight bent edge against which the drill is leaned with the flute edges thereof lying against said straight edge of said strip, said straight edge making an acute angle with the pivot axis, a stop adjustably secured to said support remote from said pivot to abut the chuck end of the drill, and a holder secured to said support between said stop and said table to receive and hold the drill therein.
Claim 2
Dependent Claim
140 words
A drill sharpening jig used in combination with an abrasive wheel, comprising a pivot which is mounted with its axis parallel to the wheel axis, an elongated support rigid with said pivot at an angle thereto, a table having a base and a platform angularly adjustably secured thereto, said base secured to said support and adjustable along the same, the platform having a free-standing resilient strip with a straight bent edge against which the drill is leaned with the flute edges thereof lying against said straight edge of said strip, said straight edge making an acute angle with the pivot axis, a stop adjustably secured to said support remote from said pivot to abut the chuck end of the drill, and a holder secured to said support between said stop and said table to receive and hold the drill therein.
Claim 3
Dependent Claim
140 words
A drill sharpening jig used in combination with an abrasive wheel, comprising a pivot which is mounted with its axis parallel to the wheel axis, an elongated support rigid with said pivot at an angle thereto, a table having a base and a platform angularly adjustably secured thereto, said base secured to said support and adjustable along the same, the platform having a free-standing resilient strip with a straight bent edge against which the drill is leaned with the flute edges thereof lying against said straight edge of said strip, said straight edge making an acute angle with the pivot axis, a stop adjustably secured to said support remote from said pivot to abut the chuck end of the drill, and a holder secured to said support between said stop and said table to receive and hold the drill therein.
Claim 4
Dependent Claim
140 words
A drill sharpening jig used in combination with an abrasive wheel, comprising a pivot which is mounted with its axis parallel to the wheel axis, an elongated support rigid with said pivot at an angle thereto, a table having a base and a platform angularly adjustably secured thereto, said base secured to said support and adjustable along the same, the platform having a free-standing resilient strip with a straight bent edge against which the drill is leaned with the flute edges thereof lying against said straight edge of said strip, said straight edge making an acute angle with the pivot axis, a stop adjustably secured to said support remote from said pivot to abut the chuck end of the drill, and a holder secured to said support between said stop and said table to receive and hold the drill therein.
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |