US5494477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive tool insert
Assignee: Diamond Innovations Inc
•
Filing: 1993-08-11
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Granted: 1996-02-27
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Expires: 2013-08-11
Abstract
Abstract An abrasive tool insert comprises a cemented substrate and a polycrystalline diamond layer formed thereon by high pressure, high temperature processing. The interface between the substrate and the diamond layer comprises at least one angled profile wherein said profile slopes downwardly and outwardly toward the periphery of the insert.
Inventors
- 👤 Gary M. Flood
- 👤 David M. Johnson
- 👤 Henry S. Marek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:46
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; B23B2226/00; B23B2226/12; B23B2226/125; B23B2226/31; B23B2226/315; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2272; Y10T407/2282; Y10T407/2286; Y10T407/2288
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
an abrasive 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 at least one sloped region extending from said cutting surface to a substantially planar region, said planar region extending from said sloped region to said periphery, 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
83 words
an abrasive 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 at least one sloped region extending from said cutting surface to a substantially planar region, said planar region extending from said sloped region to said periphery, 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
36 words
A tool insert as defined in claim 1, wherein said abrasive layer further comprises a top flat surface, wherein said sloped region is sloped between about 10 to about 50 degrees to said top flat surface.
Claim 4
Dependent Claim
25 words
A tool insert as defined in claim 2, wherein said sloped region is sloped between 25 to about 45 degrees to said top flat surface.
Claim 5
Dependent Claim
17 words
An abrasive tool insert as defined in claim 1 wherein said substrate is made of cemented carbide.
Claim 6
Dependent Claim
17 words
A tool insert as defined in claim 1 wherein said abrasive compact is made of polycrystalline diamond.
References Cited (Backward Citations)
US4109737A
Cited
FR2355990A1
Cited
SU911004A1
Cited
US4504284A
Cited
US4629373A
Cited
US4525178A
Cited
US4525178B1
Cited
US4784023A
Cited
US4872520A
Cited
US4972637A
Cited
EP0322214B1
Cited
US5007207A
Cited
US5025874A
Cited
US4858707A
Cited
US4997049A
Cited
SU1694847A1
Cited
US5037451A
Cited
US5054246A
Cited
US5057124A
Cited
EP0369852A1
Cited
EP0389800A1
Cited
US4954139A
Cited
US4984642A
Cited
US5011515A
Cited
US5011515B1
Cited
US5217081A
Cited
JPH04152003A
Cited
US5120327A
Cited
US5172778A
Cited
US5351772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-26 | 1999-08-28 | 2000-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-26 | 2003-08-28 | 2004-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-26 | 2007-08-28 | 2008-02-27 | $7700.00 | Window Closed / Lapsed |