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:
May. 13, 2014
Filed:
Apr. 29, 2005
Applicant:
Urs Studer, Zürich, CH;
Inventor:
Urs Studer, Zürich, CH;
Assignee:
Lyonnaise des Eaux, Paris la Defense, FR;
Primary Examiner:
Int. Cl.
CPC ...
F28F 19/00 (2006.01); F28F 13/18 (2006.01); F24H 3/00 (2006.01); F16L 9/14 (2006.01); F16L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A heat exchanger system extracts heat from sewer waste water. Preferably, a first surface is narrow band in an interior surface of a pipe, and the band is preferably oriented transverse to a direction of fluid flow. In the case of a horizontal pipe, the band may be a partial band, and may be limited substantially to a wetted portion of the pipe in order to reduce the size of the band.