Inventor

WILLIS CLYDE A

US23 patents

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

WILLIS CLYDE A

APACHE CORP

Apparatus for gripping a down hole tubular for rotation

Top head drive assembly for earth drilling machine and components thereof

Modular drilling machine and components thereof

Automatic sequencing system for earth drilling machine

Method of assembling a modular drilling machine

Apparatus for gripping a down hole tubular for support and rotation

Top head drive assembly with axially movable quill

Automatic pipe elevator

Feeding device for down hole tubulars

Line reeving system for earth drilling machine

Top head drive cooling system

Lifting device for down hole tubulars

WALKER NEER MFG CO

Lifting apparatus for down-hole tubulars

Self centering tongs and transfer arm for drilling apparatus

Self-centering clamp for down-hole tubulars

Inner tube assembly for dual conduit drill pipe

Axial return hammer

Apparatus for supporting and rotating a down hole tubular

Nutating drill bit

Self-centering clamp for down-hole tubulars

Self locking and unlocking elevator assembly

Skirted hammer sub for dual tube drilling

Collapsible pedestal for drilling apparatus