Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Actuator mechanism for lift-turn valves

Actuator mechanism for lift-turn valves

US Patent 4320777 · Granted Mar 23, 1982

Estimated economic value: $1,403,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Blowout preventer control system2000
Springless pilot operated sequence valve1995
Geothermal wellhead repair unit1991
Geothermal wellhead repair unit1991
Pilot actuated spool valve1989
Fail-safe fluid piloted valve positioner with hydromechanical position lock1987
Fail safe hydraulic piloted pressure reducing and regulating valve1986
Seal for an underwater connector1985
Hydraulic subsea control system with disconnect1984
Four-way plug valve1983
Four-way plug valve1981