Bruce H. Burr

Person

Harris, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Drill bit seal and method of using same
- Patent number 10,161,190
- Issue date Dec 25, 2018
- National-Oilwell Varco, L.P.
- Bruce Hawley Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Lip seal for roller cone drill bit
- Patent number 7,036,613
- Issue date May 2, 2006
- ReedHycalog, L.P.
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit face seal having lubrication gap
- Patent number 6,427,790
- Issue date Aug 6, 2002
- Schlumberger Technology Corporation
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Single energizer face seal for rocks bits with floating journal bea...
- Patent number 6,247,545
- Issue date Jun 19, 2001
- Camco International Inc.
- Bruce Hawley Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit face seal having anti-rotation pins
- Patent number 6,176,330
- Issue date Jan 23, 2001
- Camco International Inc.
- Bruce Hawley Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with convergent cutter bearing
- Patent number 4,899,838
- Issue date Feb 13, 1990
- Hughes Tool Company
- Eric C. Sullivan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with two piece bearing and rigid face seal assembly
- Patent number 4,753,303
- Issue date Jun 28, 1988
- Hughes Tool Company - USA
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with shear compression seal
- Patent number 4,671,368
- Issue date Jun 9, 1987
- Hughes Tool Company - USA
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with improved rigid face seal assembly
- Patent number 4,666,001
- Issue date May 19, 1987
- Hughes Tool Company - USA
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with pressure compensating bearing seal
- Patent number 4,519,719
- Issue date May 28, 1985
- Hughes Tool Company
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with pressure compensating rigid face seal
- Patent number 4,516,641
- Issue date May 14, 1985
- Hughes Tool Company - USA
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring drill bit with snap ring cutter retention
- Patent number 4,491,428
- Issue date Jan 1, 1985
- Hughes Tool Company
- Bruce H. Burr
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILL BIT SEAL AND METHOD OF USING SAME
- Publication number 20160340980
- Publication date Nov 24, 2016
- National-Oilwell Varco, L.P.
- Bruce Hawley Burr
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILL BIT SEAL AND METHOD OF USING SAME
- Publication number 20130319770
- Publication date Dec 5, 2013
- National-Oilwell Varco, L.P.
- Bruce H. Burr
- E21 - EARTH DRILLING MINING
Information Patent Application
LIP SEAL FOR ROLLER CONE DRILL BIT
- Publication number 20050056462
- Publication date Mar 17, 2005
- Bruce H. Burr
- E21 - EARTH DRILLING MINING

Bruce H. Burr

Person

Patents Grantslast 30 patents

Drill bit seal and method of using same

Lip seal for roller cone drill bit

Rock bit face seal having lubrication gap

Single energizer face seal for rocks bits with floating journal bea...

Rock bit face seal having anti-rotation pins

Earth boring bit with convergent cutter bearing

Earth boring bit with two piece bearing and rigid face seal assembly

Earth boring bit with shear compression seal

Earth boring bit with improved rigid face seal assembly

Earth boring bit with pressure compensating bearing seal

Earth boring bit with pressure compensating rigid face seal

Earth boring drill bit with snap ring cutter retention

Patents Applicationslast 30 patents

DRILL BIT SEAL AND METHOD OF USING SAME

DRILL BIT SEAL AND METHOD OF USING SAME

LIP SEAL FOR ROLLER CONE DRILL BIT