US3603414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insert for drilling unit
Assignee: Individual
•
Filing: 1970-01-30
•
Granted: 1971-09-07
•
Expires: 1990-01-30
Abstract
Abstract A solid wear-resistant sintered metallic carbide insert adapted for forcible insertion into an opening in a working face of a drill member includes a generally polygonal body portion having at least about 12 sides extending between a base end and an opposite head end thereof, and a generally conical wedging portion on the head end of the body portion diverging outwardly therefrom and having an outer diameter greater than the diameter of the body portion, the wedging portion intersecting the body portion whereby the corners formed by the body portion sides terminate intermediate the outer and inner ends of the wedging portion to provide a smooth annular wedging surface on the outer end of the wedging portion, the body and wedging portions being insertable into the working face opening for mounting them therein with the body portion engaging the wall of the opening in an interference fit and the outer end of the wedging portion wedged in the opening adjacent the working face. A unit for drilling earth formations includes a drill member having a working face provided with a generally circular insert opening extending inwardly therefrom, the opening terminating at the working face in an outwardly divergent conical mouth, and the insert mounted in the opening with its body portion engaging the wall of the opening in an interference fit and the outer end of its wedging portion wedged in the mouth of the opening.
Inventors
- 👤 Frank E Stebley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/50; E21B10/52
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
164 words
A solid wear-resistant sintered metallic carbide insert adapted for forcible insertion into an opening in a working face of a drill member which comprises a generally polygonal body portion having at least about 12 sides extending between a base end and an opposite head end thereof, and a generally conical wedging portion on said head end of the body portion diverging outwardly therefrom and having an outer diameter greater than the diameter of the body portion, said wedging portion intersecting said body portion whereby the corners formed by said body portion sides terminate intermediate the outer and inner ends of the wedging portion to provide a smooth annular wedging surface on the outer end of the wedging portion, said body and wedging portions being insertable into said working face opening for mounting them therein with said body portion engaging the wall of said opening in an interference fit and said outer end of the wedging portion wedged in said opening adjacent said working face.
Claim 2
Dependent Claim
164 words
A solid wear-resistant sintered metallic carbide insert adapted for forcible insertion into an opening in a working face of a drill member which comprises a generally polygonal body portion having at least about 12 sides extending between a base end and an opposite head end thereof, and a generally conical wedging portion on said head end of the body portion diverging outwardly therefrom and having an outer diameter greater than the diameter of the body portion, said wedging portion intersecting said body portion whereby the corners formed by said body portion sides terminate intermediate the outer and inner ends of the wedging portion to provide a smooth annular wedging surface on the outer end of the wedging portion, said body and wedging portions being insertable into said working face opening for mounting them therein with said body portion engaging the wall of said opening in an interference fit and said outer end of the wedging portion wedged in said opening adjacent said working face.
Claim 3
Dependent Claim
26 words
An insert as defined in claim 1 wherein said wedging portion diverges at an angle of about 4*-6* from the longitudinal axis of said body portion.
Claim 4
Dependent Claim
17 words
An insert as defined in claim 1 wherein said body portion has about 18 to 22 sides.
Claim 5
Dependent Claim
14 words
An insert as defined in claim 1 wherein said metallic carbide comprises tungsten carbide.
Claim 6
Dependent Claim
19 words
An insert as defined in claim 1 having a head portion on the outer end of said wedging portion.
Claim 7
Dependent Claim
84 words
A unit for drilling earth formations comprising a drill member having a working face provided with a generally circular insert opening extending inwardly therefrom, said opening terminating at said working face in an outwardly divergent conical mouth, and an insert as defined in claim 1 mounted in said opening, the body portion of said insert engaging the wall of said opening in an interference fit, and the outer end of the wedging portion of said insert being wedged in the mouth of said opening.
Claim 8
Dependent Claim
17 words
A unit as defined in claim 6 wherein said drill member is a rotary-percussion drill bit body.
Claim 9
Dependent Claim
16 words
A unit as defined in claim 6 wherein said drill member is a roller cutter body.
Claim 10
Dependent Claim
15 words
A unit as defined in claim 6 wherein said insert is constructed of tungsten carbide.
Claim 11
Dependent Claim
178 words
A solid wear-resistant sintered metallic carbide insert adapted for forcible insertion into an opening in a working face of a drill member which comprises a generally polygonal body portion having about 18 to 22 sides extending between a base end and an opposite head end thereof, and a generally conical wedging portion on said head end of the body portion diverging outwardly therefrom at an angle of about 4*-6* from the longitudinal axis of the body portion and having an outer diameter greater than the diameter of the body portion, said wedging portion intersecting said body portion whereby the corners formed by said body portion sides terminate intermediate the outer and inner ends of the wedging portion to provide a smooth annular wedging surface on the outer end of the wedging portion, said body and wedging portions being insertable into said working face opening for mounting them therein with said body portion engaging the wall of said opening in an interference fit and said outer end of the wedging portion wedged in said opening adjacent said working face.
Claim 12
Dependent Claim
178 words
A solid wear-resistant sintered metallic carbide insert adapted for forcible insertion into an opening in a working face of a drill member which comprises a generally polygonal body portion having about 18 to 22 sides extending between a base end and an opposite head end thereof, and a generally conical wedging portion on said head end of the body portion diverging outwardly therefrom at an angle of about 4*-6* from the longitudinal axis of the body portion and having an outer diameter greater than the diameter of the body portion, said wedging portion intersecting said body portion whereby the corners formed by said body portion sides terminate intermediate the outer and inner ends of the wedging portion to provide a smooth annular wedging surface on the outer end of the wedging portion, said body and wedging portions being insertable into said working face opening for mounting them therein with said body portion engaging the wall of said opening in an interference fit and said outer end of the wedging portion wedged in said opening adjacent said working face.
Claim 13
Dependent Claim
14 words
An insert as defined in claim 10 wherein said metallic carbide comprises tungsten carbide.
Claim 14
Dependent Claim
24 words
An insert as defined in claim 11 having a generally hemispherical head portion on the outer end of said wedging portion and conterminous therewith.
Claim 15
Dependent Claim
97 words
A unit for drilling earth formations comprising a drill member having a working face prOvided with a generally circular insert opening extending inwardly therefrom, said opening terminating at said working face in a conical mouth diverging outwardly at an angle of about 4*-6* from the longitudinal axis of the opening, and an insert as defined in claim 6 mounted in said opening, the body portion of said insert engaging the wall of said opening in an interference fit, and the outer end of the wedging portion of said insert being wedged in the mouth of said opening.
Claim 16
Dependent Claim
17 words
A unit as defined in claim 13 wherein said drill member is a rotary-percussion drill bit body.
Claim 17
Dependent Claim
16 words
A unit as defined in claim 13 wherein said drill member is a roller cutter body.
Claim 18
Dependent Claim
26 words
A unit as defined in claim 13 wherein said drill member is a disc roller cutter body having said working face on a disc portion thereof.
Claim 19
Dependent Claim
15 words
A unit as defined in claim 16 wherein said insert is constructed of tungsten carbide.
References Cited (Backward Citations)
US2121202A
Cited
US2687875A
Cited
US2955804A
Cited
US3027953A
Cited
US3311181A
Cited
US3356418A
Cited
US3382940A
Cited
US3389761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |