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:
Dec. 17, 1996
Filed:
Apr. 12, 1995
Gregory F Clark, Alpharetta, GA (US);
James G Himes, Jr, Woodstock, GA (US);
Nordson Corporation, Westlake, OH (US);
Abstract
A hot melt material coating system (10) is provided, comprising (i) a rotary coater (12) driven by a motor (604); (ii) a rotary coater position, speed and direction indicator (610) operatively connected to the rotary coater and providing a signal representing the position, speed and direction thereof; (iii) a web position, speed and direction indicator (612) operatively connected to the web and providing a signal representing the position, speed and direction thereof; and (iv) a control system (600). The control system (600) includes (a) a first control circuit (614) for receiving the rotary coater position, speed and direction indicator signal and the web position, speed and direction indicator signal, and for outputting a control signal to the motor in response to the indicator signals to maintain a predetermined relationship of the position, speed and direction of the rotary coater with respect to that of the web; (b) a web position indicator (618) positioned proximate to the web and providing a signal representing the position thereof with respect to the web; and (c) a second control circuit (616) for receiving the web position indicator signal and the web position, speed and direction indicator signal, and for outputting a web position correction signal to the first control circuit, the first control circuit varying the control signal in response to the web position correction signal.