Patent US3882749A successfully refreshed from Google Patents.
US3882749A
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US
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Beavertooth cutting edge
Assignee: Individual
•
Filing: 1973-10-10
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Granted: 1975-05-13
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Expires: 1993-10-10
Abstract
Abstract A cutting member employs an elongated body composed of at least two separate elongated sections disposed side by side and bonded together along a common interface, one section being relatively thick, the other being relatively thin. One end of the body defines a cutting edge which defines a line intersecting the longitudinal axis of the body at an acute angle. The cutting edge has a lead region or point disposed in the thin section. The thick section is characterized by rapid wear during cutting. The thin section is characterized by slow wear during cutting. Both sections are formed from dissimilar metals or alloys.
Inventors
- 👤 James C Tourek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/285; A; A01; A01B; A01B15/00; A01B15/02; A01B15/04; A01B15/06; B; B25; B25D; B25D3/00; Y; Y10; Y10T; Y10T83/00; Y10T83/303; Y10T83/929
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
An elongated cutting member composed of at least two separate elongated sections of different and dissimilar metals or alloys disposed side by side, extending in the longitudinal direction of the member and bonded together along a common interface, which extends in said direction, one section being relatively thick and characterized by rapid wear during cutting, the other section being relatively thin and characterized by slow wear during cutting, one end of the member defining a cutting edge, said edge defining a line intersecting the longitudinal axis of the member at an acute angle and having a lead region or point disposed in said other section, the edge being formed from exposed portions of both sections.
Claim 2
Dependent Claim
115 words
An elongated cutting member composed of at least two separate elongated sections of different and dissimilar metals or alloys disposed side by side, extending in the longitudinal direction of the member and bonded together along a common interface, which extends in said direction, one section being relatively thick and characterized by rapid wear during cutting, the other section being relatively thin and characterized by slow wear during cutting, one end of the member defining a cutting edge, said edge defining a line intersecting the longitudinal axis of the member at an acute angle and having a lead region or point disposed in said other section, the edge being formed from exposed portions of both sections.
Claim 3
Dependent Claim
47 words
The member of claim 1 wherein there are two relatively thick like sections disposed on opposite sides of the thin section, said edge defining two oppositely disposed cutting edges which are mirror images of each other and have a common lead region disposed in the thin section.
Claim 4
Dependent Claim
18 words
The member of claim 2 wherein both relatively thick sections are formed from the same metal or alloy.
References Cited (Backward Citations)
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US1832429A
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US1960879A
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US2033594A
Cited
US2751195A
Cited
US2889138A
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US2888247A
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |