US3907191A
Expired / Lapsed
US
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Method of constructing a rotary rock bit
Assignee: Dresser Industries Inc
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Filing: 1973-10-24
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Granted: 1975-09-23
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Expires: 1993-10-24
Abstract
Abstract A rotary rock bit is constructed from a multiplicity of individual segments. Each individual segment includes two parting faces and a gage cutting surface. The individual segments are positioned adjacent each other with the parting faces of the adjacent segments in abutting relationship to one another. A ring gage is positioned around the segments and the individual segments are moved relative to one another causing the parting faces of an individual segment to slide against the parting faces of the adjacent segments. The segments are moved until the gage cutting surfaces of the segments contact the ring gage thereby insuring that the finished bit will have the desired gage size. The segments are welded together over a substantial portion of the parting faces.
Inventors
- 👤 Carl Laurent Lichte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0013; E; E21; E21B; E21B10/00; E21B10/08; E21B10/20; B23K2101/00; B23K2101/002; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49895
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the surfaces of the parting faces of the adjacent segments in abutting relationship to one another, sliding the individual segments relative to one another thereby causing unrestricted movement of the parting faces of an individual segment against the parting faces of the next adjacent segments over substantially the entire surfaces of said abutting faces until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together.
Claim 2
Independent Claim
119 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the surfaces of the parting faces of the adjacent segments in abutting relationship to one another, sliding the individual segments relative to one another thereby causing unrestricted movement of the parting faces of an individual segment against the parting faces of the next adjacent segments over substantially the entire surfaces of said abutting faces until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together.
Claim 3
Independent Claim
109 words
A method of constructing a rotary rock bit from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent seGments in abutting relationship to one another, moving the individual segments relative to one another causing unrestricted movement of the parting faces of an individual segment against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together over a substantial portion of the parting faces.
Claim 4
Independent Claim
109 words
A method of constructing a rotary rock bit from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent seGments in abutting relationship to one another, moving the individual segments relative to one another causing unrestricted movement of the parting faces of an individual segment against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together over a substantial portion of the parting faces.
Claim 5
Independent Claim
123 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another, positioning a sizing means proximate said gage cutting surfaces, moving the individual segments relative to one another thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments come into contact with said sizing means and are at the desired gage size, and welding the segments together.
Claim 6
Independent Claim
123 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another, positioning a sizing means proximate said gage cutting surfaces, moving the individual segments relative to one another thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments come into contact with said sizing means and are at the desired gage size, and welding the segments together.
Claim 7
Independent Claim
120 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: assembling the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another; disposing a sizing means in operative position about the assembled segments; moving the individual segments relative to one another outwardly toward the sizing means thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments engage the sizing means; and welding the segments together.
Claim 8
Independent Claim
120 words
A method of constructing a rotary rock bit with an accurate gage size from a multiplicity of individual segments wherein each of the individual segments includes individual parting faces and a gage cutting surface, comprising the steps of: assembling the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another; disposing a sizing means in operative position about the assembled segments; moving the individual segments relative to one another outwardly toward the sizing means thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments engage the sizing means; and welding the segments together.
Claim 9
Dependent Claim
27 words
The method of claim 4 wherein said step of moving the individual segments relative to one another consists of scissoring the segments with respect to one another.
Claim 10
Dependent Claim
36 words
The method of claim 4 wherein each of said segments has an end portion spaced from said gage cutting surface and said step of scissoring said segments consists of pivoting said segments about said end portion.
Claim 11
Independent Claim
113 words
A method of constructing a rotary rock bit from a multiplicity of individual segments wherein each of the individual segments includes a gage cutting surface, a shank portion, and individual parting faces, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another. moving the individual segments relative to one another by pivoting the individual segments about said shank portion thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together.
Claim 12
Independent Claim
113 words
A method of constructing a rotary rock bit from a multiplicity of individual segments wherein each of the individual segments includes a gage cutting surface, a shank portion, and individual parting faces, comprising the steps of: placing the individual segments adjacent one another with the parting faces of the adjacent segments in abutting relationship to one another. moving the individual segments relative to one another by pivoting the individual segments about said shank portion thereby causing the parting faces of an individual segment to slide against the parting faces of the next adjacent segments until the gage cutting surfaces of the segments are at the desired gage size, and welding the segments together.
Claim 13
Independent Claim
230 words
A method of constructing a rotary rock bit with an accurate gage size from a first segment including first segment individual parting faces, a first segment gage cutting surface, and a first segment shank portion; a second individual segment including second individual segment parting faces, a second segment gage cutting surface, and a second segment shank portion; and a third individual segment including third segment individual parting faces, a third segment gage cutting surface, and a third segment shank portion; comprising the steps of: placing said first, second, and third individual segments adjacent one another with a first segment parting face in abutting relationship to a second segment parting face, a second segment parting face in abutting relationship to a third segment parting face, and a third segment parting face in abutting relationship to a first segment parting face, moving said first, second, and third individual segments relative to one another by pivoting said first, second and third individual segments about said first, second and third shank portions thereby causing said first segment parting face to slide against said second segment parting face, said second segment parting face to slide against said third segment parting face, and said third segment parting face to slide against said first segment parting face until said first, second and third gage cutting surfaces are at the desired gage size, and welding the segments together.
Claim 14
Independent Claim
230 words
A method of constructing a rotary rock bit with an accurate gage size from a first segment including first segment individual parting faces, a first segment gage cutting surface, and a first segment shank portion; a second individual segment including second individual segment parting faces, a second segment gage cutting surface, and a second segment shank portion; and a third individual segment including third segment individual parting faces, a third segment gage cutting surface, and a third segment shank portion; comprising the steps of: placing said first, second, and third individual segments adjacent one another with a first segment parting face in abutting relationship to a second segment parting face, a second segment parting face in abutting relationship to a third segment parting face, and a third segment parting face in abutting relationship to a first segment parting face, moving said first, second, and third individual segments relative to one another by pivoting said first, second and third individual segments about said first, second and third shank portions thereby causing said first segment parting face to slide against said second segment parting face, said second segment parting face to slide against said third segment parting face, and said third segment parting face to slide against said first segment parting face until said first, second and third gage cutting surfaces are at the desired gage size, and welding the segments together.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |