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US 12,281,756 B2Granted
Fire extinguisher charging nozzle
AssigneeRely Innovations, Inc.
InventorJ. R. Nerat
Life of this patent
Estimating the term…
Abstract
A recharging nozzle, a fire extinguisher configured with a recharging nozzle, and a method of recharging a pressurized water fire extinguisher using the recharging nozzle where the recharging nozzle is configured to be insertable into an air pressure quick disconnect fitting connected to a source of pressurized air.
Claims19
A fire extinguisher comprising:
- a storage tank;
- a valve body;
- and
- a hose assembly, the hose assembly connected to the valve body at a first end and comprising a recharge nozzle at a second end, the recharge nozzle configured with an engagement recess that accepts latching components of an air disconnect fitting.
1 more element
A fire extinguisher recharging nozzle comprising:
- a nozzle body having an engagement recess that accepts latching balls of an air disconnect fitting and a discharge tip, the discharge tip having an outer diameter that is sized to depress a valve portion of the air disconnect fitting such that the valve opens to allow the passage of air through the disconnect fitting when the recharging nozzle is inserted into the disconnect fitting;
- and
- a discharge aperture having a diameter between 0.08 and 0.15 inches.
A method of charging a pressurized water fire extinguisher comprising:
- filling a storage tank of a pressurized water fire extinguisher with a liquid;
- installing a control valve assembly onto the storage tank;
- connecting a recharge nozzle configured with an engagement recess that accepts latching components of an air disconnect fitting, the recharge nozzle in fluid communication with the control valve assembly and the air disconnect fitting, the air disconnect fitting in fluid communication with a source of compressed air;
- actuating a valve release handle to allow compressed air to flow from the recharge nozzle through the control valve into the storage tank;
- monitoring a pressure gauge in fluid communication with the storage tank until a desired pressure indication is attained;
- de-actuating the valve release handle;
- and
- disconnecting the recharge nozzle from the air disconnect fitting.
5 more elements
Dependencies are inferred from the claim text.