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Method for producing a drill shaft for a wet drill bit
US11724339B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11724339-B2 |
| Application number | US-201716472721-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 28, 2017 |
| Priority date | Dec 23, 2016 |
| Publication date | Aug 15, 2023 |
| Grant date | Aug 15, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method for producing a drill shaft for a wet drill bit includes forming N, where N≥1, strip materials into a tubular body where the tubular body is integrally joined at strip edges of the strip materials by N connection welds. At least one strip material of the strip materials is provided with at least one recess before the integral joining of the strip edges.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a drill shaft for a wet drill bit, wherein the wet drill bit produces a borehole having a borehole diameter and a drilled core having a core diameter, comprising the steps of: forming N, wherein N≥1, strip materials into a tubular body by integrally joining respective strip edges of the strip materials by N connection welds; and providing at least one of the strip materials with at least one recess before the integrally joining, wherein the at least one recess is disposed a distance from the connection welds, wherein at least one of the at least one recess is provided on an inside of the tubular body, and wherein clean cooling and flushing fluid is transportable by the at least one of the at least one recess provided on the inside of the tubular body. 2. The method according to claim 1 , wherein the tubular body is a spiral-tube-shaped body and wherein the connection welds are spiral-shaped connection welds. 3. The method according to claim 1 , wherein the tubular body is a longitudinal tubular body and wherein the connection welds are longitudinal connection welds. 4. The method according to claim 1 , wherein at least one of the at least one recess is provided on an outside of the tubular body and wherein used cooling and flushing fluid is transportable by the at least one of the at least one recess provided on the outside of the tubular body.
Assignees
Inventors
Classifications
- B23K26/302Primary
of helicoidal seams · CPC title
with welded or soldered seams · CPC title
Making tools for sawing machines or sawing devices for use in cutting any kind of material · CPC title
Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts (E21B10/42 takes precedence) · CPC title
specially adapted for coiled tubing · CPC title
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- What does patent US11724339B2 cover?
- A method for producing a drill shaft for a wet drill bit includes forming N, where N≥1, strip materials into a tubular body where the tubular body is integrally joined at strip edges of the strip materials by N connection welds. At least one strip material of the strip materials is provided with at least one recess before the integral joining of the strip edges.
- Who is the assignee on this patent?
- Hilti Ag
- What technology area does this patent fall under?
- Primary CPC classification B23K26/302. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 15 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).