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David W. Barrett

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Publication

Featured researches published by David W. Barrett.

Archive | 1994

Linear door motor system for elevators

David W. Barrett; Richard E. Peruggi; Louis Bialy; Ernest P. Gagnon

Archive | 1995

Elevator door drive using dual secondary linear induction motor

Zbigniew Piech; Jerome F. Jaminet; Thomas M. Kowalczyk; Edward E. Ahigian; Richard E. Kulak; Thomas M. McHugh; Thomas He; Richard E. Peruggi; David W. Barrett

Archive | 1994

Elevator hoistway door bolt lock

Richard E. Kulak; Thomas M. McHugh; Edward E. Ahigian; Jerome F. Jaminet; Thomas He; Richard E. Peruggi; Thomas M. Kowalczyk; David W. Barrett

Archive | 1995

Linear induction motor door drive assembly for elevators

Jerome F. Jaminet; Zbigniew Piech; Frank Guliuzza; Thomas M. McHugh; Edward E. Ahigian; Thomas He; Richard E. Peruggi; Thomas M. Kowalczyk; Richard E. Kulak; David W. Barrett

Archive | 1994

Elevator cab door drive system

Jerome F. Jaminet; Thomas M. Kowalczyk; Edward E. Ahigian; Thomas M. McHugh; Thomas He; Richard E. Peruggi; Richard E. Kulak; David W. Barrett

Archive | 1995

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

Richard E. Peruggi; Thomas M. McHugh; Edward E. Ahigian; Jerome F. Jaminet; Thomas He; Thomas M. Kowalczyk; Richard E. Kulak; David W. Barrett; Zbigniew Piech

Archive | 1994

Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door

Thomas M. McHugh; David W. Barrett; Edward E. Ahigian; Jerome F. Jaminet; Thomas He; Richard E. Peruggi; Thomas M. Kowalczyk; Richard E. Kulak

Archive | 1994

Smooth and quiet linear induction motor elevator door operation

Richard E. Peruggi; Thomas M. McHugh; Edward E. Ahigian; Jerome F. Jaminet; Thomas He; Thomas M. Kowalczyk; Richard E. Kulak; David W. Barrett

Archive | 1997

Elevator cars switch hoistways while traveling vertically

David W. Barrett; John F. Cassidy; George A. L. David; Ernest P. Gagnon; Andrew F. Peruggi; Richard E. Peruggi

Archive | 1997

Elevator system with overlapped roped-coupler segments

David W. Barrett; John F. Cassidy; George A. L. David; Ernest P. Gagnon; Richard E. Peruggi

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