IES87350Y1 - Drill bit assembly for reverse circulation hammer - Google Patents
Drill bit assembly for reverse circulation hammerInfo
- Publication number
- IES87350Y1 IES87350Y1 IE20220068U IE20220068U IES87350Y1 IE S87350 Y1 IES87350 Y1 IE S87350Y1 IE 20220068 U IE20220068 U IE 20220068U IE 20220068 U IE20220068 U IE 20220068U IE S87350 Y1 IES87350 Y1 IE S87350Y1
- Authority
- IE
- Ireland
- Prior art keywords
- bit
- head portion
- drive
- drill bit
- reverse circulation
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The present invention relates to a drill bit assembly (1) for a reverse circulation down-the-hole hammer (100). The assembly comprises a percussion bit (2) having a head portion (3) with a cutting face (5) at a forward end thereof with engagement means (8) on the head portion for engagement with complementary engagement means (9) on a drive chuck whereby rotational drive from the drive chuck may be transmitted to the percussion bit. Connection means (11) are provided on the drive chuck adapted for connecting the drive chuck to a drive means of the down-the-hole hammer. The percussion bit comprises a central bore (13) in fluid communication with the cutting face of the bit for returning a sample of drilled cuttings to the surface, a first plurality (17) of flushing grooves in an outer surface of the head portion, configured to deliver a supply of flushing medium to the cutting face of the bit and a second plurality (18) of flushing grooves in an outer surface of the head portion, configured to deliver a supply of flushing medium to the central bore.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20220068U IE20220068U1 (en) | 2022-04-14 | 2022-04-14 | Drill bit assembly for reverse circulation hammer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20220068U IE20220068U1 (en) | 2022-04-14 | 2022-04-14 | Drill bit assembly for reverse circulation hammer |
Publications (2)
Publication Number | Publication Date |
---|---|
IES87350Y1 true IES87350Y1 (en) | 2022-12-21 |
IE20220068U1 IE20220068U1 (en) | 2022-12-21 |
Family
ID=84493068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE20220068U IE20220068U1 (en) | 2022-04-14 | 2022-04-14 | Drill bit assembly for reverse circulation hammer |
Country Status (1)
Country | Link |
---|---|
IE (1) | IE20220068U1 (en) |
-
2022
- 2022-04-14 IE IE20220068U patent/IE20220068U1/en unknown
Also Published As
Publication number | Publication date |
---|---|
IE20220068U1 (en) | 2022-12-21 |
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