The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2007
Filed:
Apr. 08, 2005
Truc Tran-ngoc, Mississauga, CA;
Christopher Bennett, Cambridge, CA;
Truc Tran-Ngoc, Mississauga, CA;
Christopher Bennett, Cambridge, CA;
Polymer Technologies Inc., Cambridge, ON, CA;
Abstract
An electromagnetic coil assembly is provided. The electromagnetic coil assembly includes a bobbin, a coil of magnet wire and a cover piece. The bobbin includes a hub, a first flange and a second flange. The hub has a longitudinal axis. The first and second flanges are spaced axially from each other. The hub and flanges together define a circumferential bobbin channel. The bobbin is made from a material that is an electrical insulator. The coil of magnet wire is positioned around the hub in the circumferential bobbin channel. The magnet wire has first and second ends. The cover piece is self-supporting and is sized to extend circumferentially around the coil of magnet wire. The cover piece is resilient and exerts a compressive force radially inwardly on the coil of magnet wire.