Patent US3660877A successfully refreshed from Google Patents.
US3660877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutoff tool having improved cutting tip
Assignee: Manchester Tool Co
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Filing: 1970-04-22
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Granted: 1972-05-09
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Expires: 1990-04-22
Abstract
Abstract A cutoff tool characterized by the fact that the cutting portion thereof is provided with a localized cutting area that includes a relatively high degree of compound clearance angles provided in a minimal amount of space for increasing the cutoff efficiency and the tool life, while permitting simplified grinding without impairing tool strength.
Inventors
- 👤 William B Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:19
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/18; B23B27/04; Y; Y10; Y10T; Y10T407/00; Y10T407/25; Y10T407/26
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
110 words
An improved cutting tip for use on cutting tools, comprising; A. at least one hardened tip adapted to be supported on said cutting tool and having an integral enlarged transverse cutting portion extending transversely across said cutting tool; and B. said cutting portion being 1. integral with said hardened body and 2. having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and 3. projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body.
Claim 2
Dependent Claim
110 words
An improved cutting tip for use on cutting tools, comprising; A. at least one hardened tip adapted to be supported on said cutting tool and having an integral enlarged transverse cutting portion extending transversely across said cutting tool; and B. said cutting portion being 1. integral with said hardened body and 2. having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and 3. projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body.
Claim 3
Dependent Claim
26 words
having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and
Claim 4
Dependent Claim
26 words
having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and
Claim 5
Dependent Claim
3 words
opposed side surfaces
Claim 6
Dependent Claim
3 words
opposed side surfaces
Claim 7
Dependent Claim
26 words
having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and
Claim 8
Dependent Claim
26 words
having opposed side surfaces that are respectively disposed at equal compound angles with respect to the remaining opposed side surfaces of said hardened body portion and
Claim 9
Dependent Claim
15 words
a cutting edge formed by the point of juncture of said top and front surfaces
Claim 10
Dependent Claim
15 words
a cutting edge formed by the point of juncture of said top and front surfaces
Claim 11
Dependent Claim
25 words
The tip of claim 1 further characterized by the fact that said side and back clearance angles are equal and exceed 4* in each instance.
Claim 12
Dependent Claim
49 words
projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body; and C. said cutting tool having a bottom surface with a truncated V-shaped configuration which underlies said tip.
Claim 13
Dependent Claim
49 words
projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body; and C. said cutting tool having a bottom surface with a truncated V-shaped configuration which underlies said tip.
Claim 14
Dependent Claim
13 words
a tip receiving pocket in one end thereof; B. a cutting tip having
Claim 15
Dependent Claim
13 words
a tip receiving pocket in one end thereof; B. a cutting tip having
Claim 16
Dependent Claim
25 words
The device of claim 1 further characterized by the fact that said cutting portion is generally triangularly shaped in front to rear cross sectional view.
Claim 17
Dependent Claim
31 words
projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body.
Claim 18
Dependent Claim
31 words
projecting transversely beyond said remaining opposed side surfaces a. whereby said compound surfaces provide side and back clearance areas for said cutting edge in a localized area of said hardened body.
Claim 19
Dependent Claim
3 words
opposed side walls
Claim 20
Dependent Claim
3 words
opposed side walls
Claim 21
Dependent Claim
23 words
The device of claim 1 further characterized by the fact said cutting portion is approximately one-third of the cross-sectional area of said tip.
Claim 22
Dependent Claim
63 words
an enlarged cutting portion adjacent said cutting edge and extending beyond said opposed side walls and forming a compound angle beyond the planes of said opposed side walls a. whereby side and back clearance are provided with respect to said cutting edge, with the transverse distance between said side walls remaining constant; and C. said cutting tip adapted to seat in said pocket.
Claim 23
Dependent Claim
63 words
an enlarged cutting portion adjacent said cutting edge and extending beyond said opposed side walls and forming a compound angle beyond the planes of said opposed side walls a. whereby side and back clearance are provided with respect to said cutting edge, with the transverse distance between said side walls remaining constant; and C. said cutting tip adapted to seat in said pocket.
Claim 24
Dependent Claim
45 words
An improved cutting tip for use on a cutting tool, comprising; A. at least one hardened tip adapted to be supported on said cutting tool and having an enlarged integral transverse cutting portion extending transversely across said cutting tool; and B. said cutting portion being
Claim 25
Dependent Claim
45 words
An improved cutting tip for use on a cutting tool, comprising; A. at least one hardened tip adapted to be supported on said cutting tool and having an enlarged integral transverse cutting portion extending transversely across said cutting tool; and B. said cutting portion being
Claim 26
Dependent Claim
25 words
The device of claim 5 further characterized by the fact that said cutting portion is generally triangularly shaped in front to rear cross sectional view.
Claim 27
Dependent Claim
10 words
A cutting tool, comprising; A. an elongate body portion having
Claim 28
Dependent Claim
10 words
A cutting tool, comprising; A. an elongate body portion having
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |