Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mechanism for varying valve duration in an internal combustion engine

Mechanism for varying valve duration in an internal combustion engine

US Patent 4974560 · Granted Dec 4, 1990

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Gear manufacturing process2022
Friction brake with a resistive sensor2014
Refrigeration apparatus1996
Cooling of molded articles with a mixture of evaporated cryogen and dried air1992
Variable valve duration and lift for an internal combustion engine1991
Device to combine the motions of two camlobes differentially phased1991
Valve duration and lift variator for internal combustion engines1991