Linear motor

Details Linear motor Linear motor

2009-08-18

2010-11-23

Hanh, Nguyen N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

Reexamination Certificate

active

07839030

ABSTRACT:
When a pitch between centers of two adjacent magnetic pole portions disposed on an armature is defined as τs, the length W of permanent magnets disposed in the middle is equal to the pitch τs (W=τs). The length of each of the two end permanent magnets respectively disposed at either end of a permanent magnet magnetic pole row is denoted by W1. A ratio w1/W of the length W1to the length W is defined as 0.43<W1/W<0.49. With this definition, cogging torque of a linear motor may sufficiently be reduced.

REFERENCES:
patent: 5196745 (1993-03-01), Trumper
patent: 6917136 (2005-07-01), Thornton et al.
patent: 7538469 (2009-05-01), Thornton et al.
patent: 7701093 (2010-04-01), Tang et al.
patent: 2005/0104456 (2005-05-01), Yajima et al.
patent: 11-308850 (1999-11-01), None
patent: 2003-18818 (2003-01-01), None
patent: 2004-289895 (2004-10-01), None

Affiliated with

Also associated with

Rating

Linear motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4252109