US4757645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
cutting tool and method of making same
Assignee: Boeing Co
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Filing: 1982-09-30
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Granted: 1988-07-19
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Expires: 2002-09-30
Abstract
Abstract A cutting tool having grit particles coated onto its outer surface, most of which include a substantially flat outer surface defining at least one cutting edge. The tool has two surfaces which intersect, and the grit particles are adhered to each surface and to the intersection of the surfaces. The grit particles at the intersection of the surfaces have a further substantially flat outer surface defining at least one cutting edge, with the further substantially flat outer surface being inclined relative to the substantially flat outer surfaces on each of the other two surfaces.
Inventors
- 👤 Theodore Ozer
- 👤 Brian Behringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:40
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; B24; B24D; B24D7/00; B24D7/18
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A rotary cutting tool, comprising: a substrate body defining an axis of rotation and two intersecting outer surfaces; and a plurality of grit particles adhered to both surfaces and at approximately the intersection of both surfaces, wherein: (i) a substantial number of grit particles along both surfaces and at approximately the intersection of both surfaces include a substantially flat outer surface defining at least one cutting edge; and (ii) the substantial number of grit particles at approximately the intersection of both surfaces include a further substantially flat outer surface defining at least one additional cutting edge, said further substantially flat outer surface being inclined relative to said axis.
Claim 2
Dependent Claim
108 words
A rotary cutting tool, comprising: a substrate body defining an axis of rotation and two intersecting outer surfaces; and a plurality of grit particles adhered to both surfaces and at approximately the intersection of both surfaces, wherein: (i) a substantial number of grit particles along both surfaces and at approximately the intersection of both surfaces include a substantially flat outer surface defining at least one cutting edge; and (ii) the substantial number of grit particles at approximately the intersection of both surfaces include a further substantially flat outer surface defining at least one additional cutting edge, said further substantially flat outer surface being inclined relative to said axis.
Claim 3
Dependent Claim
15 words
The rotary cutting tool as defined in claim 1, wherein the inclination is approximately 45°.
Claim 4
Dependent Claim
21 words
The rotary cutting tool as defined in claim 1, wherein the grit particles have an average maximum diameter of 0.080 inches.
Claim 5
Dependent Claim
133 words
A tool for cutting composite material, such as honeycomb core materal, comprising: a generally cylindrical body defining an axis of symmetry, and having a longitudinally extending surface, and a generally transversely extending surface relative to said axis and intersecting said longitudinally extending surface; and a plurality of grit particles adhered to both surfaces and at approximately the intersection of both surfaces, wherein: (i) a substantial number of grit particles along both surfaces and at approximately the intersection of both surfaces include a substantially flat outer surface defining at least one cutting edge; and (ii) the substantial number of grit particles at approximately the intersection of both surfaces include a further substantially flat outer surface defining at least one additional cutting edge, said further substantially flat outer surface being inclined relative to said axis.
Claim 6
Dependent Claim
133 words
A tool for cutting composite material, such as honeycomb core materal, comprising: a generally cylindrical body defining an axis of symmetry, and having a longitudinally extending surface, and a generally transversely extending surface relative to said axis and intersecting said longitudinally extending surface; and a plurality of grit particles adhered to both surfaces and at approximately the intersection of both surfaces, wherein: (i) a substantial number of grit particles along both surfaces and at approximately the intersection of both surfaces include a substantially flat outer surface defining at least one cutting edge; and (ii) the substantial number of grit particles at approximately the intersection of both surfaces include a further substantially flat outer surface defining at least one additional cutting edge, said further substantially flat outer surface being inclined relative to said axis.
Claim 7
Dependent Claim
13 words
The tool as defined in claim 4, wherein the inclination is approximately 45°.
Claim 8
Dependent Claim
21 words
The tool as defined in claim 4, wherein said generally transversely extending surface is inclined relative to said longitudinally extending surface.
Claim 9
Dependent Claim
26 words
The tool as defined in claim 6, wherein the inclination of said generally transversely extending surface relative to the said longitudinally extending surface is approximately 1°-2°.
Claim 10
Dependent Claim
40 words
The tool as defined in claim 4, wherein the inclination of said further substantially flat outer surface of said axis is approximately 45°, and wherein said generally transversely extending surface is inclined to said longitudinally extending surface by approximately 1°-2°.
Claim 11
Dependent Claim
19 words
The tool as defined in claim 4, wherein the grit particles have an average maximum diameter of 0.080 inches.
Claim 12
Dependent Claim
50 words
The rotary cutting tool as defined in claim 1, wherein one of the intersecting outer surfaces is cylindrical with respect to the axis of rotation and the cutting edges defined by the substantially flat outer surface of adjacent grit particles on the cylindrical outer surface define a clearance between them.
Claim 13
Dependent Claim
32 words
The tool as defined in claim 4, wherein the cutting edges defined by the substantially flat outer surface of adjacent grit particles on the longitudinally extending surface define a clearance between them.
References Cited (Backward Citations)
US4083351A
Cited
US4338748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |