Inventor

DRENTH CHRISTOPHER L

US79 patents

⚠️ This page may combine multiple inventors who share the name “DRENTH CHRISTOPHER L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DRENTH CHRISTOPHER L

LONGYEAR TM INC

Spearhead base

Spearhead

Spearhead base

Spearhead

Core barrel sleeve with axial grooves

Core barrel head assembly with axial groove

Core barrel assembly with tapered design

Braking devices for use in drilling operations

Core lifter

Vibratory unit for drilling systems

Tube loader

Core barrel assemblies with braking devices

Core barrel latch body with axial grooves

Core lifter

Core barrel head assembly with an integrated sample orientation tool and system for using same

Core barrel head assembly with an integrated sample orientation tool and system for using same

Handling and recovery devices for tubular members and associated methods

Methods of braking core barrel assemblies

High productivity core drilling system

Core barrel head assembly with an integrated sample orientation tool and system for using same

Core barrel head assembly with an integrated sample orientation tool and system for using same

Driven latch mechanism

Handling and recovery devices for tubular members and associated methods

Handling and recovery devices for tubular members and associated methods

Braking devices for drilling operations, and systems and methods of using same

Core drilling tools with retractably lockable driven latch mechanisms

DRENTH CHRISTOPHER L

Seal for head assembly

Core barrel head assembly with tapered design

Seal for head assembly

Core barrel retracting case

Core barrel latch body

Seal for head assembly

Drill string components resistant to jamming

Driven latch mechanism

Latch body components having multiple functions, and drilling head assembly incorporating same

Core drilling tools with retractably lockable driven latch mechanisms

Core drilling tools with external fluid pathways

Core lifter

Latch body

BLY IP INC

Drill string components having multiple-thread joints

Drill string components having multiple-thread joints

Continuous sampling drill bit

Drill string components having multiple-thread joints

Drill string components resistant to jamming

Devices, systems, and methods for wireless data acquisition during drilling operations

Drill rod having internally projecting portions

Systems and methods for releasing a portion of a drill string from a drilling cable

Drill rod having internally projecting portions

BOART LONGYEAR INT HOLDING INC

Rod joint

RUPP MICHAEL D

Helical drilling apparatus, systems, and methods