US4626140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chip control insert
Assignee: Valenite LLC
•
Filing: 1985-10-07
•
Granted: 1986-12-02
•
Expires: 2005-10-07
Abstract
Abstract Circular chip control insert including a plurality of peripheral arcuate scallops having adjacent intersections terminating in points at the cutting edge of the insert providing a wedge effect in dividing and breaking chips.
Inventors
- 👤 Raymond Zweekly
- 👤 Tony M. Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:06
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/143; B23B2200/00; B23B2200/04; B23B2200/0461; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1952; Y10T407/1962; Y10T407/1964; Y10T407/23; Y10T407/235
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
65 words
A chip breaking insert characterized by a circular cutting face with a circular peripheral cutting edge, a plurality of chip breaking scallop depressions around the cutting face periphery adjacent the cutting edge forming adjacent ridges on said face which intersect each other in wedge points substantially at the cutting edge, each scallop comprising a bottm positive rake planar surface terminating in a conical segment backwall.
Claim 2
Dependent Claim
65 words
A chip breaking insert characterized by a circular cutting face with a circular peripheral cutting edge, a plurality of chip breaking scallop depressions around the cutting face periphery adjacent the cutting edge forming adjacent ridges on said face which intersect each other in wedge points substantially at the cutting edge, each scallop comprising a bottm positive rake planar surface terminating in a conical segment backwall.
Claim 3
Dependent Claim
18 words
The insert of claim 1 wherein said planar surface and conical backwall are provided with an arcuate intersection.
Claim 4
Dependent Claim
18 words
The insert of claim 1 wherein said planar surface and conical backwall are provided with a radiused intersection.
Claim 5
Dependent Claim
20 words
The insert of claim 1 wherein said backwall extends in the order of 28° from normal to the insert face.
Claim 6
Dependent Claim
28 words
The insert of claim 1 wherein said planar scallop surface extends with a positive radial rake in the order of 20° relative to the face of the insert.
Claim 7
Dependent Claim
24 words
The insert of claim 1 wherein said scallop backwall extends at an included angle in the order of 98° relative to said planar surface.
Claim 8
Dependent Claim
28 words
The insert of claim 1 wherein said cutting edge extends in the order of 0.005" below the face of said insert at the center line of each scallop.
Claim 9
Dependent Claim
26 words
The insert of claim 1 wherein the intersection between adjacent scallops has a lowermost point in the order of 0.0015" maximum rise above the cutting edge.
Claim 10
Dependent Claim
22 words
The insert of claim 1 where each scallop has the form of the corner of intersecting conical and planar transverse end surfaces.
Claim 11
Dependent Claim
25 words
The insert of claim 1 wherein said scallop has the form of the corner of intersecting conical and planar transverse end surfaces with intersecting radius.
Claim 12
Dependent Claim
21 words
The insert of claim 1 wherein the extent of said scallop is in the order of 1/4 of the conical diameter.
Claim 13
Dependent Claim
20 words
The insert of claim 1 wherein scallops are provided at intervals in the order of 0.010" of cutting edge perimeter.
Claim 14
Dependent Claim
19 words
The insert of claim 1 wherein said scallops are provided at intervals not exceeding 0.010" of cutting edge perimeter.
Claim 15
Dependent Claim
12 words
The insert of claim 1 having a 3/8" diameter with 12 scallops.
Claim 16
Dependent Claim
13 words
The insert of claim 1 having a 12 mm. diameter with 16 scallops.
Claim 17
Dependent Claim
12 words
The insert of claim 1 having a 1/2 diameter with 18 scallops.
Claim 18
Dependent Claim
12 words
The insert of claim 1 having a 5/8" diameter with 24 scallops.
Claim 19
Dependent Claim
15 words
The insert of claim 1 including a corner scallop radius in the order of 0.010".
References Cited (Backward Citations)
US2863209A
Cited
US3383748A
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US4215957A
Cited
US4273480A
Cited
GB2057939A
Cited
US4335984A
Cited
US4465412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |