Invention Grant
- Patent Title: Door operator with switched flux linear motor
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Application No.: US15594117Application Date: 2017-05-12
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Publication No.: US10686357B2Publication Date: 2020-06-16
- Inventor: Zbigniew Piech , Amy Robinson
- Applicant: OTIS ELEVATOR COMPANY
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: H02K41/03
- IPC: H02K41/03 ; H02K1/17 ; B66B13/08 ; E05F15/60 ; E05F17/00 ; B66B9/00

Abstract:
A permanent magnet linear motor. The permanent magnet linear motor including a primary comprising a magnetically permeable core having a first face surface on a first side of the core a plurality of teeth forming a plurality of slots on the first side, and a plurality of multi-phase windings wound to have segments thereof in the slots forming a plurality of magnetic poles at each of the first face surfaces; a permanent magnet pair of opposing polarity configured to produce magnetic flux and cause the primary to exert a force on the secondary when the plurality of multiphase windings are excited by a multiphase source; and a passive ferromagnetic secondary adjacent to but spaced from the first face surface, the passive ferromagnetic secondary being moveable with respect to the primary.
Public/Granted literature
- US20180331610A1 DOOR OPERATOR WITH SWITCHED FLUX LINEAR MOTOR Public/Granted day:2018-11-15
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