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:
Nov. 02, 1999
Filed:
Mar. 09, 1998
Applicant:
Inventor:
Medhat A Higazy, Troy, MI (US);
Assignee:
The Detroit Edison Company, Detroit, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F15D / ;
U.S. Cl.
CPC ...
138 45 ; 138 46 ; 222547 ;
Abstract
A variable orifice for controlling the flow of pulverized coal and air in a pipe leading to a cool burner comprises a plurality of flow restriction poles extending into the pipe. The poles are radially adjustable to vary the amount of restriction to flow. Indicia are provided to indicate the position of the inner ends of the poles.