# US 5,348,099 A · Indoor fire hydrant apparatus

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- Number: US 5,348,099 A
- Document ID: US5348099A
- Status: Granted
- Kind: A
- Application number: 08/021,459
- Filed: 1993-02-23
- Granted: 1994-09-20
- Earliest claimed: 1992-11-02
- Assignees: Yokoi Manufacturing Co., Ltd.
- Inventors: Shin Yokoi
- Web page: https://patentgrep.com/patent/US5348099A

## CPC

- A62C 35/20: Hydrants, e.g. wall-hoses, wall units, plug-in cabinets (hydrants in streets E03B9/02)
- A62C 33/04: Supports or clamps for fire hoses
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)

## Abstract

An indoor fire hydrant apparatus includes a fire hose having electrical conductors extending along its length and connected to a switch mounted near the nozzle end of the hose. Closure of the switch causes energization of a solenoid-actuated valve which is connected between a source of water under pressure and the hose. Closure of the switch also causes energization of a pump to build up the water pressure. A single person may pull the hose from a rack, extend it toward a fire, and actuate the switch thereby causing water under pressure to be dispersed through the nozzle. The electrical conductors may be embedded in a wall of the fire hose or mounted on an exterior surface of the hose. The hose may be of the folding type or the type which maintains its generally circular shape.

## Claims

### Claim 1

An indoor fire hydrant apparatus comprising:
a fire hose with a discharge nozzle connected to a first end thereof;
an electrically operated discharge valve having an input port connected to a source of water under pressure and an output port connected to a second end of said first hose;
a discharge control switch located near said first end of said fire hose;
a relay having a first set of contacts connected in a series circuit with said electrically operated discharge valve across a supply voltage;
first and second electrical conductors extending along said fire hose, said conductors, said relay, and said discharge control switch being connected in a series circuit across said supply voltage whereby actuation of said discharge control switch causes energization of said relay and, in turn, energization of said discharge control valve to thereby permit water under pressure to flow into said fire hose,
and a pump start switch and a second set of relay contacts connected in parallel with said pump start switch, said second set of relay contacts being controlled by said relay.