Jeffrey W. Hamner

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Allen, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Drilling machine having a movable rod handling device and a method...
- Patent number 7,347,285
- Issue date Mar 25, 2008
- Atlas Copco Drilling Solutions Inc.
- Jeffrey W. Hamner
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill feed control utilizing a variable overcenter valve
- Patent number 5,168,937
- Issue date Dec 8, 1992
- Ingersoll-Rand Company
- Jeffrey W. Hamner
- E21 - EARTH DRILLING MINING
Information Patent Grant
Overcenter valve control system and method for drilling
- Patent number 5,033,266
- Issue date Jul 23, 1991
- Ingersoll-Rand Company
- Jeffrey W. Hamner
- E21 - EARTH DRILLING MINING
Information Patent Grant
Closed loop hydraulic drill feed system
- Patent number 4,953,639
- Issue date Sep 4, 1990
- Ingersoll-Rand Company
- Jeffrey W. Hamner
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Drilling machine having a movable rod handling device
- Publication number 20060137910
- Publication date Jun 29, 2006
- Atlas Copco Secoroc AB
- Jeffrey W. Hamner
- E21 - EARTH DRILLING MINING