Inventor
DAVIS III DANIEL B
US5 patents
Patents
5 patentsUS11377323B2Jul 5, 2022
Retrofitting an elevator machine with primary and secondary braking
OTIS ELEVATOR CO0 citations59
US11299374B2Apr 12, 2022
Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine
OTIS ELEVATOR CO0 citations59
US10618775B2Apr 14, 2020
Retrofitting an elevator machine with primary and secondary braking
OTIS ELEVATOR CO1 citations59
US10737908B2Aug 11, 2020
Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine
OTIS ELEVATOR CO0 citations49
US10625984B2Apr 21, 2020
Counterweight for elevator system
OTIS ELEVATOR CO0 citations39