US4854784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond tipped chip control insert
Assignee: Clapp & Haney Tool Co
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Filing: 1988-10-19
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Granted: 1989-08-08
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Expires: 2008-10-19
Abstract
Abstract An improved metalcutting insert which incorporates a polycrystalline diamond or a polycrystalline cubic boron nitride material therein as a cutting edge material. The insert substrate includes integral chip control features which eliminate the need for the use of separately attached mechanical chipbreakers.
Inventors
- 👤 Gerald D. Murray
- 👤 Shelby R. Gibson
- 👤 Keith J. Carpenter
- 👤 Kenneth E. Carpenter
- 👤 Michael R. Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:59
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B2200/00; B23B2200/32; B23B2200/326; B23B2226/00; B23B2226/12; B23B2226/125; B23B2226/31; B23B2226/315; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/235; Y10T407/24; Y10T407/245; Y10T407/27
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
An improved metalcutting insert comprising a substrate defining a forward end, an upper surface, a bottom surface and means defining a substantially continuous side wall therebetween, said upper surface having a first portion, a second portion and a third portion, said first portion being of a predetermined first elevation relative to said bottom surface and defining a rake face, said second portion being at a second elevation relative to said bottom surface and defining a floor portion and said third portion being at a third elevation and defining chip breaking means integral with the remainder of said substrate; said first, second and third portions of said upper surface defining therein means forming a slot between said integral chip breaking means and floor portion, said slot extending rearwardly from said forward end; and means defining a cutting edge adapted to be mounted in said slot means, so that at least a portion of said cutting edge means forms said rake face and at least a portion of said integral chip breaking means extends over said cutting edge means.
Claim 2
Dependent Claim
177 words
An improved metalcutting insert comprising a substrate defining a forward end, an upper surface, a bottom surface and means defining a substantially continuous side wall therebetween, said upper surface having a first portion, a second portion and a third portion, said first portion being of a predetermined first elevation relative to said bottom surface and defining a rake face, said second portion being at a second elevation relative to said bottom surface and defining a floor portion and said third portion being at a third elevation and defining chip breaking means integral with the remainder of said substrate; said first, second and third portions of said upper surface defining therein means forming a slot between said integral chip breaking means and floor portion, said slot extending rearwardly from said forward end; and means defining a cutting edge adapted to be mounted in said slot means, so that at least a portion of said cutting edge means forms said rake face and at least a portion of said integral chip breaking means extends over said cutting edge means.
Claim 3
Dependent Claim
21 words
The improved metalcutting insert according to claim 1 wherein the insert is a rectangular style insert with integral chip control features.
Claim 4
Dependent Claim
22 words
The improved metalcutting insert according to claim 1 wherein the insert is a diamond shaped insert with chip control features integral therewith.
Claim 5
Dependent Claim
22 words
The improved metalcutting insert according to claim 1 wherein the insert is a triangle shaped insert with chip control features integral therewith.
Claim 6
Dependent Claim
31 words
The improved metalcutting insert according to claim 1 wherein the insert is adapted to be retained in a tool by a clamping mechanism which securely retains the insert within the tool.
Claim 7
Dependent Claim
29 words
The improved metalcutting insert according to claim 1 wherein the insert has a centrally disposed hole for securing in a securing means for retaining the insert onto a toolholder.
Claim 8
Dependent Claim
18 words
The improved metalcutting insert according to claim 1 wherein the cutting edge means is a polycrystalline diamond material.
Claim 9
Dependent Claim
20 words
The improved metalcutting insert according to claim 1 wherein the cutting edge means is a polycrystalline cubic boric nitride material.
Claim 10
Dependent Claim
16 words
The improved metalcutting insert according to claim 1 wherein the substrate is a hard cemented carbide.
References Cited (Backward Citations)
US3868750A
Cited
US4201501A
Cited
JPS5444293A
Cited
WO1982002161A1
Cited
US4561810A
Cited
US4714385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |