Patent US4606678A successfully refreshed from Google Patents.
US4606678A
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Circular chip control insert
Assignee: Valenite LLC
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Filing: 1985-04-22
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Granted: 1986-08-19
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Expires: 2005-04-22
Abstract
Abstract A circular chip breaking insert having a plurality of overlapping peripheral conical depressions extending to the cutting edge including secondary conical depressions formed at the overlapping areas of the primary depressions.
Inventors
- 👤 Raymond Zweekly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:50
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/143; B23B2200/00; B23B2200/04; B23B2200/0461; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/235; Y10T407/24; Y10T407/245
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
A circular chip breaking insert with a cutting face having a circular cutting edge characterized by a plurality of chip breaking depressions around the cutting face periphery intersecting each other and the cutting edge, each depression comprising segments of a pair of opposed base conical frustums connected by an arcuate juncture of their intersecting sides.
Claim 2
Dependent Claim
55 words
A circular chip breaking insert with a cutting face having a circular cutting edge characterized by a plurality of chip breaking depressions around the cutting face periphery intersecting each other and the cutting edge, each depression comprising segments of a pair of opposed base conical frustums connected by an arcuate juncture of their intersecting sides.
Claim 3
Dependent Claim
13 words
The insert of claim 1 wherein said conical frustums have a common axis.
Claim 4
Dependent Claim
18 words
The insert of claim 2 wherein said axis extends normal to the axial center line of said insert.
Claim 5
Dependent Claim
20 words
The insert of claim 3 wherein said depressions overlap approximately one-third of each adjacent depression at the peripheral cutting edge.
Claim 6
Dependent Claim
34 words
The insert of claim 4 wherein said conical frustum surface intersecting the cutting edge extends at approximately 15° positive rake angle relative to the cutting face in a bisecting plane including the insert axis.
Claim 7
Dependent Claim
20 words
The insert of claim 5 wherein said other conical frustum surface extends at approximately 105° included angle to the first.
Claim 8
Dependent Claim
42 words
The insert of claim 6 wherein the axially longitudinal position of conical frustum base juncture and depth of depression provide a cutting edge at the circumferential center of each depression which extends approximately one-half the depth of depression below said cutting face.
Claim 9
Dependent Claim
44 words
The insert of claim 7 wherein a cutter of approximately 1/2" circular diameter each of said depressions extends radially in the order of 0.66" and to a maximum depth in the order of 0.20" and said arcuate surface has a radius of approximately 1/8".
Claim 10
Dependent Claim
44 words
The insert of claim 7 wherein a cutter of approximately 3/8" circular diameter, each of said depressions extends radially in the order of 0.54" and to a maximum depth in the order of 0.17" and said arcuate surface has a radius of approximately 1/8".
Claim 11
Dependent Claim
37 words
The insert of any one of claims 1-9 including a secondary depression of generally the same configuration as the first but of lesser depth superimposed centrally on the overlapping portion of each pair of adjacent first depressions.
Claim 12
Dependent Claim
23 words
The insert of claim 1 wherein the side wall comprises a conical frustum providing a positive rake angle in the order of 7°.
Claim 13
Dependent Claim
24 words
The insert of claim 1 wherein said insert is constructed of sintered powdered metal having the pattern of depressions pressed into the cutting face.
References Cited (Backward Citations)
US2863209A
Cited
US3383748A
Cited
US3922766A
Cited
US4215957A
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US4273480A
Cited
GB2057939A
Cited
US4335984A
Cited
FR2509641A1
Cited
US4465412A
Cited
DE3332821A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |