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. 05, 1987
Filed:
Sep. 18, 1986
John L Carter, Portland, OR (US);
Michael M Sprague, Tigard, OR (US);
Other;
Abstract
First and second ported ducts are associated with a drying chamber. A flow control housing has first and second compartments communicating respectively with the first and second ducts. These compartments also have openings which communicate with atmosphere. A fan is employed which draws air from the drying chamber into one of the ducts and through one of the compartments to atmosphere. At the same time a fan on a common shaft draws in make-up air from the atmosphere and forces it through the other of the compartments and into the other duct for discharge into the dryer. The fans are reversible, and the flow control housing is combined with a double acting heat exchanger which extracts heat from exhaust air in one compartment and transfers it to the other compartment for preheating make-up air. A damper is provided in the flow control housing on the atmosphere side thereof for precise control of exhaust and make-up air.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile