Grate bar key for stokers feeding steam generator furnaces

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Description

FIG. 1 is a plan view of one form of the invention;

FIG. 2 is a bottom view of the embodiment of FIG. 1;

FIG. 3 is a left side view of the embodiment of FIG. 1;

FIG. 4 is a front view of the embodiment of FIG. 1;

FIG. 5 is a right side view of the embodiment of FIG. 1; and,

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 1.

Referenced Cited
U.S. Patent Documents
5282741 February 1, 1994 Massaro et al.
5497711 March 12, 1996 Bobbitt
5575642 November 19, 1996 Willis et al.
Patent History
Patent number: D390949
Type: Grant
Filed: Dec 30, 1996
Date of Patent: Feb 17, 1998
Assignee: Combustion Engineering, Inc. (Windsor, CT)
Inventors: Milton A. Fong (South Windsor, CT), Mark R. Hapgood (Tolland, CT), Ivan Semyanko (East Granby, CT)
Primary Examiner: Antoine Duval Davis
Attorney: Robert S. Smith, Esq.
Application Number: 0/64,352
Classifications
Current U.S. Class: Stoker (D23/396)
International Classification: 2303;