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.:

US 6758993 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 06, 2004

Filed:

Apr. 17, 2002
Applicant:
Inventors:

Carleton L. Berk, Indianapolis, IN (US);

John D. Phillips, Pendleton, IN (US);

Diane E. Hageman, Fishers, IN (US);

Assignee:

Delphi Technologies, Inc., Troy, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/520 ; B29C 4/514 ; B29C 4/578 ;
U.S. Cl.
CPC ...
B29C 4/520 ; B29C 4/514 ; B29C 4/578 ;
Abstract

A system and method is disclosed that uses an empirically-derived thermal transfer function for an ignition coil taken with respect to an ambient temperature and responsive internal temperatures. The system combines the transfer function with a minimum cure-induced stress profile, in order to obtain a time-temperature profile for minimizing cure-induced residual stress in an epoxy resin impregnated ignition coil. An accelerated minimal-stress profile is obtained by increasing an initial gel isotherm temperature of the above-mentioned time-temperature profile.


Find Patent Forward Citations

Berk, Carleton. (2004). System and method for minimizing cure-induced residual stress in an epoxy impregnated ignition coil (U.S. Patent No. 6758993). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6758993

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…