One piece wide stoker key for stokers feeding steam generator furnaces

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Description

FIG. 1 is a plan view of one form of the invention in which the tail portion has a combination of gaps and slots;

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;

FIG. 6 is a fragmentary view of an alternate tail portion;

FIG. 7 is a fragmentary view of an alternate tail portion;

FIG. 8 is a fragmentary view of an alternate tail portion;

FIG. 9 is a fragmentary view of an alternate tail portion;

FIG. 10 is a fragmentary view of an alternate tail portion; and,

FIG. 11 is a fragmentary view of an alternate tail portion.

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: D391634
Type: Grant
Filed: Dec 30, 1996
Date of Patent: Mar 3, 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: 0/64,353
Classifications
Current U.S. Class: Stoker (D23/396)
International Classification: 2303;