# US 8,739,934 B2 · User-powered water heater

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- Number: US 8,739,934 B2
- Document ID: US8739934B2
- Status: Granted
- Kind: B2
- Application number: 13/086,111
- Filed: 2011-04-13
- Published: 2011-10-20
- Granted: 2014-06-03
- Earliest claimed: 2010-04-15
- Assignees: Seven International Group, Inc.
- Applicants: Zoran Iskrenovic
- Inventors: Zoran Iskrenovic
- Web page: https://patentgrep.com/patent/US8739934B2

## CPC

- F24H 1/225: {electrical central heating boilers}
- F24H 1/06: Portable or mobile, e.g. collapsible
- F24H 1/185: {using electric energy supply (F24H1/201 takes precedence)}
- F24D 18/00: Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
- F24D 2101/00: Electric generators of small-scale CHP systems
- F24H 2240/01: Batteries, electrical energy storage device
- F24H 2250/02: Resistances
- F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22)
- F24D: DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (using steam or condensate extracted or exhausted from steam engine plants for heating purposes F01K17/02)

## Abstract

Water heaters are described that are user-powered, such that external sources of power are unnecessary. The water heaters include a heating device and a generator coupled to a crank such that power is generated as the crank is rotated, which can be used to power the heating device.

## Claims

### Claim 1

A user-powered water heater, comprising:
a crank;
a generator coupled to the crank, and configured to generate power as the crank is rotated; and
a heating device configured to receive at least a portion of the power.

### Claim 2 (depends on 1)

The water heater of claim 1, further comprising a sensor.

### Claim 3 (depends on 2)

The water heater of claim 2, wherein the sensor is configured to detect a fluid flow within the water heater.

### Claim 4 (depends on 2)

The water heater of claim 2, wherein the sensor is configured to measure a volume of water in the water heater.

### Claim 5 (depends on 1)

The water heater of claim 1, wherein the crank is coupled to a pedal.

### Claim 6 (depends on 1)

The water heater of claim 1, further comprising a reservoir configured to hold at least 3 liters of water.

### Claim 7 (depends on 6)

The water heater of claim 6, wherein the heating device is configured to receive and heat at least a portion of the water from the reservoir.

### Claim 8 (depends on 1)

The water heater of claim 1, further comprising a valve fluidly coupled downstream of the water heater, and configured to regulate a flow of water from the water heater.

### Claim 9 (depends on 1)

The water heater of claim 1, further comprising an elastic device coupled to the crank, and wherein the elastic device is configured to store a kinetic energy from a rotation of the crank.

### Claim 10 (depends on 1)

The water heater of claim 1, further comprising an electrical outlet configured to receive a power plug of an external device.