Priority to US14/067,177 priority patent/US9398908B2/en Publication of US8598823B2 publication Critical patent/US8598823B2/en Application granted granted Critical First worldwide family litigation filed litigation Critical (B2) 'Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License. Assignors: LUCAS, GEORGE, ROLLINS, PATRICK M. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Family has litigation Priority claimed from US97891607P external-priority Priority to US13/353,551 priority Critical patent/US8598823B2/en Application filed by Prime Datum Inc filed Critical Prime Datum Inc Publication of US20130015593A1 publication Critical patent/US20130015593A1/en Assigned to PRIME DATUM, INC. Original Assignee Prime Datum Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Patrick Rollins George Lucas Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US13/353,551 Other versions US20130015593A1 Google Patents Integrated fan drive system for cooling towerĭownload PDF Info Publication number US8598823B2 US8598823B2 US13/353,551 US201213353551A US8598823B2 US 8598823 B2 US8598823 B2 US 8598823B2 US 201213353551 A US201213353551 A US 201213353551A US 8598823 B2 US8598823 B2 US 8598823B2 Authority US United States Prior art keywords motor fan bearings variable frequency signals Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US8598823B2 - Integrated fan drive system for cooling tower US8598823B2 - Integrated fan drive system for cooling tower

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