Berndt Ekwall

Person

Saltsjobaden, SE

People

Patents Grantslast 30 patents

Information Patent Grant
Compressed air percussive mechanism for a down hole hammer and down...
- Patent number 7,757,779
- Issue date Jul 20, 2010
- Atlas Copco Secoroc AB
- Torbjörn Jacobsson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Down-the-hole drilling machine
- Patent number 5,992,545
- Issue date Nov 30, 1999
- Uniroc AB
- Berndt Ekwall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Water driven hammer device
- Patent number 5,787,995
- Issue date Aug 4, 1998
- Atlas Copco Rock Drills AB
- Berndt Ekwall
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Fluid driven down-the-hole drilling machine
- Patent number 5,488,998
- Issue date Feb 6, 1996
- Atlas Copco Rocktech AB
- Berndt Ekwall
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Drill string component for drilling with a liquid driven drilling m...
- Patent number 5,375,670
- Issue date Dec 27, 1994
- Atlas Copco Rocktech AB
- Berndt Ekwall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fluid operated drill apparatus
- Patent number 5,318,140
- Issue date Jun 7, 1994
- Uniroc AB
- Berndt Ekwall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Down-the-hole drilling machine
- Patent number 5,279,371
- Issue date Jan 18, 1994
- Uniroc AB
- Berndt Ekwall
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Damping device for a percussion rock drilling machine
- Patent number 4,871,035
- Issue date Oct 3, 1989
- Atlas Copco Aktiebolag
- Berndt Ekwall
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Compressed air percussive mechanism for a down hole hammer and down...
- Publication number 20050173158
- Publication date Aug 11, 2005
- Torbjorn Jacobsson
- E21 - EARTH DRILLING MINING

Berndt Ekwall

Person

Patents Grantslast 30 patents

Compressed air percussive mechanism for a down hole hammer and down...

Down-the-hole drilling machine

Water driven hammer device

Fluid driven down-the-hole drilling machine

Drill string component for drilling with a liquid driven drilling m...

Fluid operated drill apparatus

Down-the-hole drilling machine

Damping device for a percussion rock drilling machine

Patents Applicationslast 30 patents

Compressed air percussive mechanism for a down hole hammer and down...