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:
Apr. 13, 1999
Filed:
Nov. 04, 1997
Applicant:
Inventor:
Oliver J Whitfield, Bow, WA (US);
Assignee:
Pyro Industries, Inc., Burlington, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
F24B / ;
U.S. Cl.
CPC ...
126 73 ; 126 68 ; 126112 ; 110110 ; 110233 ; 110297 ;
Abstract
A pellet fuel burner includes a compact thermally insulated firebox for providing hot gases to a boiler, furnace or dryer. The apparatus includes a grate that includes a reciprocating arm for removing clinkers and ash from the grate. Pellet fuel feed is provided by a hopper that is isolated from the firebox by an airlock. A combustion air manifold is provided around the firebox to preheat primary and secondary combustion air.