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:
Jun. 23, 1987
Filed:
Aug. 06, 1984
Charles B Gentry, Belmont, MI (US);
David R Dietz, Grand Rapids, MI (US);
Granco-Clark, Inc., Belding, MI (US);
Abstract
A temperature control system (50) for use in a furnace (10) for heating metal logs (13) as the logs (13) move through a furnace heating chamber (12) includes thermocouples (52a-52e) adapted to sense log temperatures by direct contact during intermittent time intervals when the logs (13) are stationary. Radiation sensors (64a-64 e) continuously sense radiant energy emitted from the logs (13) and a temperature compensation circuit (62) compares signals representative of log temperatures as measured by thermocouples (52a-52e) and the radition sensors (64a-64e). The difference between the signals is utilized during time intervals when the logs (13) are moving as a compensation factor for the continuous signals representative of log temperatures based on sensed radiation. The compensated signals and signals representative of desired set point temperatures are applied to log temperature controllers (80a-80e) to regulate the thermal energy applied to the logs (13).