Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Safety device of elevator and its operation testing method

Safety device of elevator and its operation testing method

US Patent 7575102 · Granted Aug 18, 2009

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Uses of rose pigment compounds2018
W/O/W emulsion having temporal stability and method for producing the same2017
System for elevator electronic safety device2012
Method for inspecting operation of actuator and actuator operation inspector2010
Control device of elevator2010
Elevator apparatus2010
Actuator driving method and actuator driving circuit2010
Elevator apparatus including a safety control portion that detects an abnormalit2009
Elevator rope slip detector and elevator system2009
Elevator rail joint detector and elevator system2009
Elevator rope slip detector and elevator system2009
Elevator apparatus that detects an accurate running speed of an elevator car tha2009