US Patent 7285878 Linear motor controller

Patent 7285878 was granted and assigned to Fisher & Paykel on October, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Fisher & Paykel

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

72858780

Patent Inventor Names

Ian McGill0

Zhuang Tain0

Date of Patent

October 23, 2007

Patent Application Number

110952700

Date Filed

March 31, 2005

Patent Primary Examiner

‌

Darren Schuberg

Patent abstract

A sensorless method of detecting piston collisions in a reciprocating free piston linear compressor driven by an electronically commutated linear motor having at least one excitation winding is provided. A free piston gas compressor is also provided.