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. 13, 1998
Filed:
Apr. 22, 1997
Armando John Bardini, Grass Valley, CA (US);
Other;
Abstract
A convective flow control device that can maintain hot water at hot water pipe connections at remotely located faucets in homes and buildings. The convective flow device has a two part housing that encloses a dual purpose poppet in an internal circular bored chamber formed by the two piece housing. The said internal circular bored chamber has one or more fluid passageways that communicate with the hot and cold water end of the device, thereby providing for a flow path from the hot water connection to the cold water connection. The said dual purpose poppet has a cylindrical shape, and slides within the internal circular chamber to make contact with the cold water end of the housing, or to make contact with the hot water end of the housing in response to the direction of flow through the device. The dual purpose poppet has a flat side that can prevent flow through the device by closing off the said fluid passageways, in response to flow from the cold water end of the device, and an orifice through the center of the dual purpose poppet controls the convective flow rate through the device from the hot water end of the device. The said orifice drilled through the dual purpose poppet has a different shape at each end which predetermines the resistance to flow from each end of the device, thereby providing low resistance to convective flow from the hot water connection, and high resistance to flow from the cold water connection.