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:
Jan. 11, 2000
Filed:
Jul. 29, 1998
Applicant:
Inventors:
Thomas M Waxler, Douglasville, GA (US);
Russell W Clark, Fayetteville, GA (US);
Assignee:
Stimsonite Corporation, Niles, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01C / ; B28C / ; C08F / ; D06F / ; A23L / ;
U.S. Cl.
CPC ...
1263 / ; 1263 / ; 126373 ; 126387 ; 126284 ; 126345 ; 99348 ; 366 64 ; 366 65 ; 366241 ; 366293 ; 366295 ; 366320 ; 3663271 ; 3663273 ; 3663274 ; 3663257 ; 366605 ; 422135 ; 68132 ; 68134 ; 68136 ;
Abstract
A heated kettle for melting and mixing a thermoplastic resin into a homogeneous mixture has a helically-formed agitator which rotates about a central shaft in close proximity to the internal wall of the kettle. Fixed to the shaft at approximately the center of the kettle is a cluster of radially extending paddles. The paddles and agitator have opposite pitch when the agitator and paddles are rotated, the resin circulates along the wall of the kettle and thence through a central region of the kettle. The circulation action serves to thoroughly melt and mix the resin into a homogeneous liquid mass.