Patent US3619152A successfully refreshed from Google Patents.
US3619152A
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Cutting tool with boron filament composite
Assignee: Tetrahedron Associates Inc
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Filing: 1969-09-16
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Granted: 1971-11-09
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Expires: 1989-09-16
Abstract
Abstract A cutting tool comprising a support body with a boron filament composite cutting edge.
Inventors
- 👤 Stanley A Yalof
- 👤 Ray T Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:23
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/121
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
The boron composite cutting tool as set forth in claim 1 wherein: said supporting body comprises a mandrel chosen from the class consisting of fiberglass, aluminum and steel.
Claim 2
Dependent Claim
22 words
The boron composite cutting tool as set forth in claim 1 wherein: said supporting body comprises a boron filament fiberglass matrix composite.
Claim 3
Dependent Claim
44 words
The boron composite cutting tool as set forth in claim 2 wherein: said mandrel is scalloped evenly about the periphery to form alternating raised and undercut areas; and said cutting edge comprises boron composite inserts physically attached to said raised portions of said mandrel.
Claim 4
Dependent Claim
83 words
The boron composite cutting tool as set forth in claim 4 wherein: said inserts are formed of material chosen from the class consisting of boron monofilament in a metal matrix, boron monofilament in a carbide matrix, boron monofilament in a ceramic matrix, boron crystals in a metal matrix, boron crystals in a carbide matrix and boron crystals in a ceramic matrix, granular amorphous boron in a metal matrix, granular amorphous boron in a carbide matrix and granular amorphous boron in a ceramic matrix.
Claim 5
Dependent Claim
28 words
The boron composite cutting tool as set forth in claim 4 wherein: said inserts are formed of a boron fiberglass composite and are adhesively secured to said mandrel.
References Cited (Backward Citations)
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |