Patent US3666321A successfully refreshed from Google Patents.
US3666321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for cutting tip of milling cutter machine
Assignee: Sandvik AB
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Filing: 1970-07-30
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Granted: 1972-05-30
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Expires: 1990-07-30
Abstract
Abstract A carbide cutting tip is mounted in a separate cartridge which is removably secured in a rotary milling cutter head, so that break-down of the tip will not endanger damage to the cutter head but only the cartridge.
Inventors
- 👤 Hans Per Olof Lundstrom
- 👤 Bernt Soren Liljekvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:38
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; B; B23; B23B; B23B29/00; B23B29/04; B23B29/046; E21B17/00; E21B17/02; E21B17/04; B23B2240/00; B23B2240/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A tool holder assembly for a milling cutter for rock drilling, said assembly comprising a shank adapted to be mounted in the cutter and a holder mounted in said shank, in which the connection between the holder and the shank comprises a T-slot connection converging in the general direction of the mutual contact surfaces, the T-component being wedged in the slot component.
Claim 2
Dependent Claim
62 words
A tool holder assembly for a milling cutter for rock drilling, said assembly comprising a shank adapted to be mounted in the cutter and a holder mounted in said shank, in which the connection between the holder and the shank comprises a T-slot connection converging in the general direction of the mutual contact surfaces, the T-component being wedged in the slot component.
Claim 3
Dependent Claim
32 words
A tool holder assembly according to claim 1 in which the tongue and groove connection is directed in such a way that it is tightened by the working pressure on the holder.
Claim 4
Dependent Claim
29 words
A tool holder assembly as claimed in claim 1 in which the holder protrudes from the shank a distance not less than the feed per tooth of the cutter.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |