Paul B. Campbell

Person

Roanoke, VA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Percussion drill assembly
- Patent number 6,047,778
- Issue date Apr 11, 2000
- Dresser-Rand Company
- James E. Coffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drill assembly
- Patent number 5,957,220
- Issue date Sep 28, 1999
- Dresser-Rand Company
- James E. Coffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drill assembly
- Patent number 5,662,180
- Issue date Sep 2, 1997
- Dresser-Rand Company
- James E. Coffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reverse percussion device
- Patent number 5,634,524
- Issue date Jun 3, 1997
- Reedrill Corporation
- Paul Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Reverse percussion device
- Patent number 5,413,186
- Issue date May 9, 1995
- Reedrill, Inc.
- Paul Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
External surface of a splined nut
- Patent number D355355
- Issue date Feb 14, 1995
- Ingersoll-Rand Company
- Paul B. Campbell
- D08 - Tools and hardware
Information Patent Grant
An external surface of a splined nut
- Patent number D355356
- Issue date Feb 14, 1995
- Ingersoll-Rand Company
- Paul B. Campbell
- D08 - Tools and hardware
Information Patent Grant
Nonrotary piston for jackhammer and removable splined nut therefor
- Patent number 5,350,025
- Issue date Sep 27, 1994
- Ingersoll-Rand Company
- Paul B. Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Nonrotary piston for jackhammer and removable splined nut therefor
- Patent number 5,305,835
- Issue date Apr 26, 1994
- Ingersoll-Rand Company
- Paul B. Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Variable frequency control for percussion actuator
- Patent number 5,031,505
- Issue date Jul 16, 1991
- Ingersoll-Rand Company
- Paul B. Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Variable frequency control for percussion actuator
- Patent number 5,022,309
- Issue date Jun 11, 1991
- Ingersoll-Rand Company
- Paul B. Campbell
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Drilling systems
- Publication number 20050126822
- Publication date Jun 16, 2005
- Paul B. Campbell
- E21 - EARTH DRILLING MINING

Paul B. Campbell

Person

Patents Grantslast 30 patents

Percussion drill assembly

Percussion drill assembly

Percussion drill assembly

Reverse percussion device

Reverse percussion device

External surface of a splined nut

An external surface of a splined nut

Nonrotary piston for jackhammer and removable splined nut therefor

Nonrotary piston for jackhammer and removable splined nut therefor

Variable frequency control for percussion actuator

Variable frequency control for percussion actuator

Patents Applicationslast 30 patents

Drilling systems