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. 28, 2002
Filed:
Feb. 02, 2001
David Bloom, Nashua, NH (US);
Robert Bouchard, Litchfield, NH (US);
David S. Harvey, Littleton, MA (US);
Geoffrey C. Neiley, III, Medford, MA (US);
Donald A. Seccombe, Jr., Mystic, CT (US);
Terrance Wong, Waban, MA (US);
Richard Tarczon, Bradford, MA (US);
Stephen J. Parrott, Derry, NH (US);
Paul Edgington, Cambridge, MA (US);
BTU International, Inc., North Billerica, MA (US);
Abstract
A modular furnace is fabricated from at least one module having a frame, a removable cover mounted to the frame, exterior cover panels on the frame, and an insulated case fastened to the interior of the module. A conveyor assembly extends through the module. A plurality of process zones, such as heating and cooling zones, are disposed within the module. Field replaceable universal blower assemblies are associated with each process zone. The motor shaft in each blower assembly is provided with a sealed bearing in the motor housing. Insulation within each module is held in place by gas permeable fabric covering large vent openings in cover panels to allow oxygen to diffuse out of the insulation rapidly upon start up.