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. 11, 1992
Filed:
Sep. 12, 1991
Robert J Krowech, St. Louis Park, MN (US);
Deltak Corporation, Minneapolis, MN (US);
Abstract
An assembly ties together a plurality of boiler tubes to increase their mechanical stability and maintain a uniform spacing between adjacent tubes. A tie bar has a plurality of periodically spaced fingers extending from a cross member to form openings between adjacent fingers with in which the boiler tubes tightly fit. A retainer projects orthogonally from ends of some of the fingers. A locking bar has wedges spaced along one edge which engage the retainers clamping the boiler tubes between the fingers of said locking bar. Stops and brackets attach to the boiler tubes to support the fingers and cross member, thereby holding the tie bar in place during assembly.