Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Piezoresistive elevator button

Piezoresistive elevator button

US Patent 5040640 · Granted Aug 20, 1991

Estimated economic value: $8,664,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Elevator car control in a landing zone using a machine brake in response to unde2016
Two-part wireless communications system for elevator hallway fixtures2003
Integrated shaft sensor for load measurement and torque control in elevators and2002
Automatic protection of elevator mechanics2001
Arrangement for detecting elevator car position1996
Capacitive sensing, solid state touch button system1991
Capacitive sensing, solid state touch button system1991