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:
Jan. 22, 1980
Filed:
Aug. 17, 1977
David H Rogers, Lake Park, FL (US);
Other;
Abstract
Under full flow conditions circulated water is conducted for heating through an elongated vertical chamber by a pump along a down-flow path from an upper lateral inlet to a lower outlet and in surrounding relationship to a vertically disposed electrical heating element in the chamber. The chamber is defined by a housing dimensioned to conduct flow with substantially no storage of water therein in order to progressively elevate the water temperature as the water is circulated through the chamber. The heating element extends upwardly from the lower axial end of the housing and terminates substantially at the level of the bottom of the inlet. Operation of the heating element is controlled by a thermostat and a flow responsive control both mounted on the upper axial end of the housing so that the heating element is energized only during periods of flow at a predetermined flow rate when the liquid is below a predetermined temperature. In this manner the internal temperature can be maintained at a relatively low value thus enabling the use of synthetic resins and other inexpensive components.