P

Inventor

POLAK DAVID R

US8 patents
⚠️ This page may combine multiple inventors who share the name “POLAK DAVID R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OTIS ELEVATOR CO

4 patents
US10773929B2Sep 15, 2020

Sheave for elevator system

OTIS ELEVATOR CO2 citations71
US11643301B2May 9, 2023

System and method for monitoring sheave bearing condition

OTIS ELEVATOR CO0 citations61
US10246300B2Apr 2, 2019

Elevator virtual aerodynamic shroud

OTIS ELEVATOR CO1 citations57
US12479691B2Nov 25, 2025

Elevator system

OTIS ELEVATOR CO0 citations41

SCHLINKER ROBERT HANS

1 patent
US8167540B2May 1, 2012

System for reducing compressor noise

SCHLINKER ROBERT HANS9 citations76

POLAK DAVID R

1 patent
US10336581B2Jul 2, 2019

System and method for reducing belt noise

POLAK DAVID R1 citations53

YU XIAOMEI

1 patent
US9815667B2Nov 14, 2017

Coated sheave

YU XIAOMEI1 citations50

WESSON JOHN P

1 patent
US9630806B2Apr 25, 2017

Sheave for an elevator system

WESSON JOHN P0 citations50