US4522633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive bodies
Assignee: Individual
•
Filing: 1983-08-03
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Granted: 1985-06-11
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Expires: 2003-08-03
Abstract
Abstract An abrasive body which comprises a cubic boron nitride compact bonded to a substrate. The compact has intergrowth between the cubic boron nitride particles which provides it with good thermal conductivity and has major surfaces on each of opposite sides, the one surface being bonded to the substrate and the other surface presenting a cutting edge. The substrate has a coefficient of thermal conductivity at least four times lower than that of the compact. The substrate is preferably made of aluminium oxide, Syalon or zirconia.
Inventors
- 👤 Henry B. Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/005; B; B24; B24D; B24D3/00; B24D3/001; B24D3/007; B24D3/02; B24D3/04; B24D3/06; B24D3/14; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B35/5831; C04B37/006; C09; C09K; C09K3/00; C09K3/14; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/08; C04B2237/12; C04B2237/124; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/345; C04B2237/348; C04B2237/36; C04B2237/361; C04B2237/366; C04B2237/368
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
An abrasive body comprising a cubic boron nitride compact having major surfaces on each of opposite sides thereof, the one surface being bonded to a substrate, and the other surface presenting a cutting edge, the compact comprising a first phase of a polycrystalline mass of intergrown cubic boron nitride particles and a second bonding phase and the substrate having a coefficient of thermal conductivity at least four times lower than that of the compact.
Claim 2
Dependent Claim
74 words
An abrasive body comprising a cubic boron nitride compact having major surfaces on each of opposite sides thereof, the one surface being bonded to a substrate, and the other surface presenting a cutting edge, the compact comprising a first phase of a polycrystalline mass of intergrown cubic boron nitride particles and a second bonding phase and the substrate having a coefficient of thermal conductivity at least four times lower than that of the compact.
Claim 3
Dependent Claim
11 words
An abrasive body according to claim 1 which is disc shaped.
Claim 4
Dependent Claim
22 words
An abrasive body according to claim 1 which has a shape selected from a segment of a disc rectangular, triangular or square.
Claim 5
Dependent Claim
17 words
An abrasive body according to claim 1 wherein the substrate is larger in mass than the compact.
Claim 6
Dependent Claim
28 words
An abrasive body according to claim 1 wherein bonding of the one surface of the compact to the substrate is achieved through a metal or alloy bonding layer.
Claim 7
Dependent Claim
18 words
An abrasive body according to claim 1 wherein the substrate is made of an oxide, nitride or Syalon.
Claim 8
Dependent Claim
28 words
An abrasive body according to claim 6 wherein the substrate is made of a material selected from aluminium oxide, zirconia, Syalon, boron nitride, aluminium nitride and silicon nitride.
Claim 9
Dependent Claim
18 words
An abrasive body according to claim 1 wherein the second phase of the compact is metallic in nature.
Claim 10
Dependent Claim
18 words
An abrasive body according to claim 1 wherein the second phase of the compact is ceramic in nature.
Claim 11
Dependent Claim
18 words
An abrasive body according to claim 9 wherein the second phase consists of aluminium nitride and/or aluminium diboride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |