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:
Apr. 04, 2000
Filed:
Feb. 10, 1998
Applicant:
Inventors:
Jerry M Wolf, Powell, OH (US);
Hiten T Shah, Delaware, OH (US);
Steven J Crosbie, Prospect, OH (US);
James D Crosbie, Delaware, OH (US);
Assignee:
Acoust-A-Fiber Research and Development, Inc., Delaware, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
252 62 ; 501 951 ;
Abstract
Concentric conduits are supplied for the purpose of minimizing heat transfer from within the inner conduit through the outer conduit. The air gap or annulus around the inner conduit is filled with a resin mixture which is mixed with vermiculite and mineral fiber to form a slurry. The slurry is pumped into an open end of the annulus to fill the annulus and enhance the heat insulation characteristics of the concentric conduits.