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:
Sep. 23, 2025
Filed:
Nov. 09, 2021
Chandler Systems, Inc., Ashland, OH (US);
William D. Chandler, Jr., Ashland, OH (US);
CHANDLER, WILLIAM D., JR., ASHLAND, US;
Abstract
An on-demand water heater () includes a heat exchanger (). Water is supplied to the water heater from a water source such as a well pump () or other source of water. The water supplied to the water heater is treated by at least one water conditioner. A plurality of electrical heating elements () are supplied with electrical power from rechargeable battery pack (). At least one circuit () is operative to control the delivery electrical power from the battery pack to the heating elements to provide for the delivery of heated water at a set temperature from the water heater. The battery pack of the water heater is recharged from an available supply of house current electrical power. The rechargeable battery pack of the exemplary water heater also provides an auxiliary source of electrical power for other devices in circumstances when electrical power from a usual supply source becomes unavailable.