Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Compound hub spring system for helicopters

Compound hub spring system for helicopters

US Patent 4333728 · Granted Jun 8, 1982

Estimated economic value: $1,209,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Constant velocity elastomeric joint1993
Rotor redundant force retention system for VTOL and VSTOL aircraft1991
Apparatus and method for folding and locking rotor blades1991
Constant velocity elastomeric bearing joint1988
Constant velocity elastomeric bearing joint1988
Soft inplane bearingless helicopter rotor1984
Blade-mounted centrifugal pendulum1980
Rotor blade out-of-plane centrifugal pendulums1980