US3683473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toolholders with detachable cutting inserts
Assignee: Wickman Wimet Ltd
•
Filing: 1970-02-25
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Granted: 1972-08-15
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Expires: 1990-02-25
Abstract
Abstract A toolholder for clamping a symmetrical cutting insert comprising a recessed shank for reception of the insert, a chip breaker engaging one face of the insert a top clamp engaging the chip breaker, and the chip breaker being pivotally mounted about an axis spaced from the insert and the clamp being movable between a clamping position and a releasing position in which the chip breaker can be pivoted to permit removal of the insert.
Inventors
- 👤 Sidney Edmund Joynson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:51
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1666; B23B27/1674; B23B27/1677; Y; Y10; Y10T; Y10T407/00; Y10T407/11; Y10T407/112; Y10T407/114; Y10T407/22; Y10T407/2272; Y10T407/2274; Y10T407/2276; Y10T407/2278
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
A tool holder for clamping a symmetrical cutting insert, about the central axis of which it is indexable, comprising a shank, a recessed seating in the shank having a surface on which one side face of the cutting insert engages, a chip breaker engageable with an opposite side face of the insert, a top clamp releasably securable by a screw in engagement with the chip breaker, the chip breaker being pivotally mounted on the shank about an axis which is spaced from the recessed seating and from said screw, the top clamp being non-rotatably movable away from the chip breaker to a releasing position in which the chip breaker can be pivoted to a position permitting removal of the insert and the top clamp also being noN-rotatably movable towards the chip breaker to a clamping position in which the insert and chip breaker are clamped in superimposed relationship on the shank.
Claim 2
Dependent Claim
151 words
A tool holder for clamping a symmetrical cutting insert, about the central axis of which it is indexable, comprising a shank, a recessed seating in the shank having a surface on which one side face of the cutting insert engages, a chip breaker engageable with an opposite side face of the insert, a top clamp releasably securable by a screw in engagement with the chip breaker, the chip breaker being pivotally mounted on the shank about an axis which is spaced from the recessed seating and from said screw, the top clamp being non-rotatably movable away from the chip breaker to a releasing position in which the chip breaker can be pivoted to a position permitting removal of the insert and the top clamp also being noN-rotatably movable towards the chip breaker to a clamping position in which the insert and chip breaker are clamped in superimposed relationship on the shank.
Claim 3
Dependent Claim
59 words
A toolholder as claimed in claim 1 in which the shank has a hole alignable with a central hole in the insert, a clamping bar engageable in the holes in the shank and insert, and means for forcing the clamping bar in a direction to clamp an edge of the insert against a corresponding edge in the recessed seating.
Claim 4
Dependent Claim
25 words
A toolholder as clamied in claim 1 including an adjusting screw whereby the chip breaker can be adjusted relatively to the shank of the toolholder.
Claim 5
Dependent Claim
33 words
A toolholder as claimed in claim 1, in which the top clamp carries a pin located in the shank and serving as a pivot about the axis of which the chip breaker moves.
References Cited (Backward Citations)
US2860402A
Cited
US2854735A
Cited
US2808638A
Cited
US3084416A
Cited
US3191262A
Cited
US3189975A
Cited
US3369284A
Cited
US3491421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |