WO2023062334 - DRILL BIT AND ASSOCIATED METHOD OF MAKING A DRILL BIT
National phase entry:
Publication Number
WO/2023/062334
Publication Date
20.04.2023
International Application No.
PCT/GB2022/052416
International Filing Date
23.09.2022
Title **
[English]
DRILL BIT AND ASSOCIATED METHOD OF MAKING A DRILL BIT
[French]
TRÉPAN ET PROCÉDÉ ASSOCIÉ DE FABRICATION D'UN TRÉPAN
Applicants **
C4 CARBIDES LIMITED
Inventors
DUGGAN, Paul
Priority Data
2114668.3
14.10.2021
GB
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1966 | |
| EPO | Filing, Examination, Granting | 8226 | |
| Japan | Filing, Examination, Granting | 2135 | |
| South Korea | Filing, Examination, Granting | 1905 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,972
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
There is provided a method of making a drill bit (10: 20) comprising a base portion (12:22) and a cutting portion (14: 24), the method comprising providing the base portion (12: 22) and the cutting portion (14: 24) as separate pieces, heat treating the cutting portion (14: 24) to form a cutting surface (16: 26) comprising braze material and abrasive particles, and after heat treatment attaching the base portion (12: 22) to the cutting portion (14: 24). The abrasive particles are substantially spherical diamond particles and have a diameter in the range 300-700 microns. A drill bit being a grinding pin or hole saw is also provided.[French]
L'invention concerne un procédé de fabrication d'un trépan (10: 20) comprenant une partie base (12:22) et une partie coupe (14:24), le procédé consistant à fournir la partie base (12:22) et la partie coupe (14:24) en tant que pièces séparées, à traiter thermiquement la partie coupe (14:24) pour former une surface de coupe (16:26) comprenant un matériau de brasage et des particules abrasives, et après le traitement thermique à fixer la partie base (12:22) à la partie coupe (14:24). Les particules abrasives sont des particules de diamant sensiblement sphériques et ont un diamètre dans la plage de 300 à 700 microns. L'invention concerne également un trépan qui est une broche de meulage ou une scie cloche.