Inventor

CAIN DAVID E

25 patents

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

CAIN DAVID E

FMC CORP

Method and apparatus for sealing between casing and wellhead connector structure

Tree test plug

Gate valve

Seals containing composite non-extrusion springs

Retrieval tool for back pressure valve and tree test plug

Well casing hanger with wide temperature range seal

Sealing assembly for subsea wellheads

Gate valve

Pressure energized/pressure intensified casing seal

HALLIBURTON CO

Hydraulic filter press

High temperature, high pressure filter press for testing drilling fluids or similar apparatus

Field hand pump for use in the measuring of properties of drilling mud, or the like

Pressurized density measuring apparatus

Hydraulic filter press for pressing liquid from a drilling mud or the like

Density measuring apparatus

Pressurized density measuring apparatus

FMC TECHNOLOGIES

Energized sealing cartridge for annulus sealing between tubular well components

Reduced torque gate valve with roller screw

Combination poppet and gate valve

Small bore gate valve

HALLIBURTON SERVICES

Viscometer

Density measuring balance

CAMERON INT CORP

Offshore well system with a subsea pressure control system movable with a remotely operated vehicle

Offshore well system with a subsea pressure control system movable with a remotely operated vehicle

(unassigned)

Wellhead retrieval tool assembly