Field conversion electric water heater
US6271505A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Feb 16, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H15/486
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An electric water heater has upper and lower electric resistance type heating elements respectively controlled by a single pole, double throw upper thermostat and a single pole, single throw lower thermostat. The upper and lower thermostats are operatively interconnected by a wiring harness having outer wire end portions that may be connected in various orientations to the terminal block portion of an external junction box to provide the water heater with a variety of heating element operating modes without having to replace either of the thermostats or vary the wiring harness interconnections therebetween. The water heater may thus be advantageously manufactured in a single variant that may be easily and quickly modified in the field to selectively alter the heating element control mode of the water heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.