Patent US4087192A successfully refreshed from Google Patents.
US4087192A
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US
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Cutting tool bit
Assignee: Individual
•
Filing: 1976-10-07
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Granted: 1978-05-02
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Expires: 1996-10-07
Abstract
Abstract A cutting tool bit has at least one cutting edge formed by an abutment edge between an end face and a side face; a cutting face adjoining the cutting edge and more than two chip breaker steps bounded by step edges and extending approximately parallel to the length dimension of the cutting edge and ascending from the cutting face towards the bit center. The chip breaker steps are arranged in a terraced manner and each step edge has a wavy shape along its length.
Inventors
- 👤 Karl Hertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:21
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1614; B23B27/1618; B23B2200/00; B23B2200/08; B23B2200/083; B23B2200/20; B23B2200/202; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/235
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
110 words
In a cutting tool bit having a center, end faces and side faces; at least one cutting edge formed by an abutment edge between an end face and a side face; a cutting face adjoining the cutting edge; and a plurality of chip breaker steps bounded by step edges and having a length dimension extending approximately parallel to the length dimension of the cutting edge and ascending from the cutting face towards the center; the improvement wherein the number of said chip breaker steps is more than two; said chip breaker steps being arranged in a terraced manner; and each said step edge having a wavy course of harmonic shape.
Claim 2
Dependent Claim
110 words
In a cutting tool bit having a center, end faces and side faces; at least one cutting edge formed by an abutment edge between an end face and a side face; a cutting face adjoining the cutting edge; and a plurality of chip breaker steps bounded by step edges and having a length dimension extending approximately parallel to the length dimension of the cutting edge and ascending from the cutting face towards the center; the improvement wherein the number of said chip breaker steps is more than two; said chip breaker steps being arranged in a terraced manner; and each said step edge having a wavy course of harmonic shape.
Claim 3
Dependent Claim
25 words
A cutting tool bit as defined in claim 1, wherein each step edge lies in a plane oriented parallel to one of said end faces.
Claim 4
Dependent Claim
25 words
A cutting tool bit as defined in claim 1, wherein each step edge lies in a plane oriented perpendicular to one of said end faces.
Claim 5
Dependent Claim
33 words
A cutting tool bit as defined in claim 1, wherein each step edge lies in a plane oriented obliquely about an axis extending parallel to a free cutting face of the tool bit.
Claim 6
Dependent Claim
51 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and the same wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged in phase with one another.
Claim 7
Dependent Claim
55 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the groove edges have, compared to one another, the same amplitudes and the same wavelengths; the spacing between the different wavy groove edges being the same; and adjoining wavy groove edges being arranged with a phase shift with respect to one another.
Claim 8
Dependent Claim
54 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and the same wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 9
Dependent Claim
52 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and the same wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 10
Dependent Claim
52 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and different wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 11
Dependent Claim
51 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and different wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 12
Dependent Claim
54 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and different wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 13
Dependent Claim
53 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and different wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 14
Dependent Claim
52 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and the same wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 15
Dependent Claim
55 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, the same amplitudes and the same wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 16
Dependent Claim
53 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and the same wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 17
Dependent Claim
51 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and the same wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 18
Dependent Claim
53 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and different wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 19
Dependent Claim
52 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and different wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged with a phase shift with respect to one another.
Claim 20
Dependent Claim
51 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and different wavelengths; the spacing between the different wavy step edges being the same; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 21
Dependent Claim
50 words
A cutting tool bit as defined in claim 1, wherein the waves constituting the step edges have, compared to one another, different amplitudes and different wavelengths; the spacing between the different wavy step edges being different; and adjoining wavy step edges being arranged in phase with respect to one another.
Claim 22
Dependent Claim
15 words
A cutting tool bit as defined in claim 1, wherein said cutting edge is linear.
Claim 23
Dependent Claim
30 words
A cutting tool bit as defined in claim 1, wherein said cutting edge has a wavy course oscillating about an axis which extends parallel to one of said end faces.
Claim 24
Dependent Claim
38 words
A cutting tool bit as defined in claim 1, wherein there are provided a plurality of cutting edges; every edge formed between a side face and an end face of said cutting tool bit being a cutting edge.
Claim 25
Dependent Claim
19 words
A cutting tool bit as defined in claim 1, wherein said chip breaker steps have surfaces of wavy course.
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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |