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:
Aug. 19, 1980
Filed:
Jul. 26, 1978
Applicant:
Inventor:
Melvin A Freund, Lancaster, OH (US);
Assignee:
The Babcock & Wilcox Company, New Orleans, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239186 ; 239553 ; 239D / ;
Abstract
A lance tube for use in long retracting cleaning devices of the soot blower type which in operation discharge jets of liquid against the fouled surfaces of heat exchangers such as the slag-coated surfaces of boiler tubes and the like incorporates a light weight hollow filler tube mounted in the lance tube by a helical spacer rib.