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:
May. 01, 2001
Filed:
Nov. 18, 1999
Lonnie G. Johnson, Atlanta, GA (US);
John M. Baxley, Dunwoody, GA (US);
Scott Shankle, Powder Springs, GA (US);
Jeffrey Shane Matthews, Atlanta, GA (US);
Johnson Research & Development Company, Inc., Smyrna, GA (US);
Abstract
An apparatus for extracting plasticizer from polymer structures includes, in one embodiment, a evacuation chamber, a heat source and a cooling chamber are all coupled to a conduit having a motorized fan for cycling gases through the components. The plasticizer is evaporated within the evacuation chamber by the heat source and entrained in a gaseous stream passing through the evacuation chamber. The plasticizer enriched gases are then passed through the cooling chamber wherein the plasticizer is condensed prior to being cycled back to the evacuation chamber. A gas heater aid in maintaining a constant gas flow temperature within the evacuation chamber.