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:
Feb. 19, 1991
Filed:
Oct. 30, 1989
Applicant:
Inventors:
Jin-Liou Fang, San Jose, CA (US);
J Kirkwood Rough, San Jose, CA (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 1053 ; 219 1073 ; 219 1079 ; 1562724 ; 1563802 ;
Abstract
A single turn induction coil which provides uniform sealing of lids to plastic containers. A first end of the coil overlaps a second end of the coil with the ends being tapered to form a single complete ring. An electrical current is coupled to the overlapped portions of the first and second end of the coil so the electrical current flows for more than 360.degree. around the coil. This provides an induced electrical current around a container lid adjacent to the coil and provides heating of the complete circumference of the lid. A variety of shapes of containers and matching lids can be used with the present invention.