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. 30, 1989
Filed:
Oct. 07, 1987
Donald B Owen, Villa Park, IL (US);
Kenneth D Hartman, Dekalb, IL (US);
Allied Precision Industries, Inc., Geneva, IL (US);
Abstract
A floating electric water heater for heating livestock watering tanks which maintains the watering tank substantially ice free during low temperatures, thereby providing access to water by a plurality of animals. More particularly, the heater includes a housing supporting an electric heating element for immersion in water to be heated and to a device in the housing for monitoring and regulating operation of the heating element. The device in the housing comprises a temperature responsive switch, which is located in the housing out of contact with the water, and a thermal conductor having both a first end affixed in a thermally conductive manner to a portion of the heating element immersible in the water and a second end affixed in a thermally conductive manner to the temperature responsive switch. The improvement comprises a thermal conductor further containing an extension (cooling) portion extending from the point of connection of its second end to the temperature responsive switch into the water to be heated, such that the extension (cooling) portion is not in contact with the heating element or first end and transmits heat from the temperature responsive switch to the water. Practically, the improvement eliminates the needless cycling by the thermostat, thereby providing maximum heat output into the water when needed.