US5484330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive tool insert
Assignee: Diamond Innovations Inc
•
Filing: 1993-07-21
•
Granted: 1996-01-16
•
Expires: 2013-07-21
Abstract
Abstract An abrasive tool insert comprises a cemented metallic substrate and a polycrystalline diamond layer formed thereon by high pressure, high temperature processing. The interface between the substrate and the diamond layer forms a sawtooth shaped cross-sectional profile including a number of surfaces sloping outwardly and downwardly toward a cutting edge of the insert.
Inventors
- 👤 Gary M. Flood
- 👤 David M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/573; E21B10/5735; B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/145; B23B27/146; B23B2222/00; B23B2222/28; B23B2226/00; B23B2226/31; B23B2226/315; Y; Y10; Y10T; Y10T407/00; Y10T407/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A tool insert, comprising: a substrate; a continuous abrasive layer having a periphery forming a cutting surface, said abrasive layer integrally formed on said substrate and defining an interface therebetween, wherein said interface includes a plurality of sloped regions forming a concentric circular pattern about a central axis of the insert, said interface having a sawtooth shaped contour in cross section having at least one sloped region and a surface extending from said cutting surface such that said abrasive layer is thicker at said cutting surface than at regions immediately and radially interior to said cutting surface.
Claim 2
Dependent Claim
97 words
A tool insert, comprising: a substrate; a continuous abrasive layer having a periphery forming a cutting surface, said abrasive layer integrally formed on said substrate and defining an interface therebetween, wherein said interface includes a plurality of sloped regions forming a concentric circular pattern about a central axis of the insert, said interface having a sawtooth shaped contour in cross section having at least one sloped region and a surface extending from said cutting surface such that said abrasive layer is thicker at said cutting surface than at regions immediately and radially interior to said cutting surface.
Claim 3
Dependent Claim
17 words
An abrasive tool insert as defined in claim 1 wherein said substrate is made of cemented carbide.
Claim 4
Dependent Claim
18 words
An abrasive tool insert as defined in claim 1 wherein said abrasive layer is made of polycrystalline diamond.
Claim 5
Dependent Claim
22 words
A tool insert as defined in claim 1, wherein said interface has a plurality of sloped regions forming a repeating linear pattern.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |