Triac drive for three-phase line-powered linear induction motor elevator door operator

Assignee

• Otis Elevator

Inventors

• Richard E. Peruggi (28 patents)
• Thomas M. McHugh (21 patents)
• Edward E. Ahigian (20 patents)
• Jerome F. Jaminet (23 patents)
• Thomas He (26 patents)
• Thomas M. Kowalczyk (36 patents)
• Richard E. Kulak (43 patents)
• David W. Barrett (27 patents)
• Zbigniew Piech (50 patents)

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