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:
Oct. 17, 1989
Filed:
Apr. 05, 1988
Applicant:
Inventor:
Armando J Bardini, Grass Valley, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23J / ;
U.S. Cl.
CPC ...
15242 ; 15243 ;
Abstract
This invention relates to two or more flat flexible membranes segmented into blades for cleaning chimneys and conduits. Said membranes can be lowered into a chimney by gravity and with only light contact with the interior surface of the chimney. The blades comprising the membrane are forced into firm and maintained contact, with the interior surface of the chimney when moved through the chimney in the upward direction.