Abrégé

The present invention is a mixing device for producing compressed foam for an extinguishing device for firefighting comprising a foam solution inlet that is operatively connected to a foam solution mixture area that is operatively connected to a compressed air inlet that is operatively connected to a compressed air injection manifold that is operatively connected to a mixing chamber. The compressed air injection manifold having a plurality of lateral sides that have a plurality of holes distributed across at least one of the lateral sides. A scrubbing collector pipe that extends into the mixing chamber to form an annular flow area within the mixing chamber. The scrubbing collector pipe having a plurality of holes distributed around an outer periphery of the scrubbing collector pipe. An inner collector pipe within the scrubbing collector pipe. A compressed air foam outlet operatively connected to the scrubbing collector pipe.

Classes IPC  ?

• A62C 13/66 - Extincteurs portatifs sous pression permanente ou mis sous pression immédiatement avant l'emploi la substance extinctrice et le gaz comprimé étant emmagasinés dans des récipients distincts

Abrégé

A foam generating system is disclosed that includes a liquid source providing liquid including at least one of water, an additive and a foaming agent. The system further includes a compressed gas source and a manifold coupled with the liquid source to receive liquid therefrom. A pressure control valve controls pressure of liquid flowing from the liquid source to the manifold and a plurality of foam generators fluidly coupled with the manifold. A control system is electrically coupled to the pressure control valve and each foam generator. In one implementation, the control system operates each of the foam generators to provide a first flow control state for a first type of foam output, a second flow control state for a second type of foam output and a water flow control state for liquid.

Classes IPC  ?

• A62C 5/02 - Fabrication de substances extinctrices immédiatement avant l'emploi de mousse

Abrégé

A pump module mountable to a chassis of a fire truck includes a pump assembly having a water pump and plumbing connected to the water pump. A lower housing defines an enclosure that includes opposed exterior panels, opposed interior panels and a top opening defined by an upper perimeter. At least one of the exterior panels maintains a fluid connection to the plumbing of the pump assembly. At least one of the interior panels includes an interior opening to accommodate the chassis and a connection between the water pump and an engine. An upper housing defines a lower perimeter that can be positioned with respect to the upper perimeter of the lower housing. The upper housing transitions between a first, operating position wherein the lower perimeter engages the upper perimeter, and a second, open position wherein the lower perimeter is spaced apart from the upper perimeter.

Classes IPC  ?

• A62C 27/00 - Engins de lutte contre l'incendie montés sur roues ou véhicules terrestres de lutte contre l'incendie
• B60P 3/22 - Camions-citernes
• B62D 33/067 - Cabines de conducteur pouvant être déplacées d'une position dans au moins une autre position, p. ex. basculables, pivotables autour d'un axe vertical, pouvant être déplacées d'un côté à l'autre du véhicule basculables
• B60P 3/42 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux transformable d'un emploi à un autre

Abrégé

A pump assembly includes a centrifugal pump having an intake, a discharge, a pump chamber and an impeller to deliver water from the intake to the discharge. A priming system is fluidly coupled to the pump chamber. A drive assembly includes a drive shaft coupled to the priming system and positioned around an impeller shaft coupled to the impeller for selective rotatable coupling of the impeller shaft and the drive shaft.

Classes IPC  ?

• F04D 27/02 - Contrôle de l'emballement
• F04D 17/08 - Pompes centrifuges
• F04D 9/04 - Utilisation de pompes d'amorçageUtilisation de pompes de surpression pour éviter le blocage par la vapeur
• F04D 29/42 - Carters d'enveloppeTubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges

Abrégé

A pump assembly includes a centrifugal pump having an intake, a discharge, a pump chamber and an impeller to deliver water from the intake to the discharge. A priming system is fluidly coupled to the pump chamber. A drive assembly includes a drive shaft coupled to the priming system and positioned around an impeller shaft coupled to the impeller for selective rotatable coupling of the impeller shaft and the drive shaft.

Classes IPC  ?

• F04D 9/04 - Utilisation de pompes d'amorçageUtilisation de pompes de surpression pour éviter le blocage par la vapeur

Abrégé

A compressed air foam delivery system includes a control unit to monitor and/or adjust components within the system so as to deliver a compressed air foam agent mixture with a desired agent:air ratio at a desired flow rate to one or more active discharges. In one embodiment, the control unit can be equipped to control one or more of a pump engine, water pump, foam delivery unit and air compressor so as to deliver and maintain the desired ratio of agent mixture at the desired flow rate.

Classes IPC  ?

• A62C 2/00 - Prévention ou limitation de l'extension des incendies
• A62C 5/02 - Fabrication de substances extinctrices immédiatement avant l'emploi de mousse
• B01F 15/00 - Accessoires pour mélangeurs
• B01F 15/04 - Réalisation de proportions prédéterminées de substances à mélanger
• B01F 3/04 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de gaz ou de vapeurs avec des liquides

Abrégé

A clutch assembly is provided for engaging a PTO assembly with a primary drive shaft of a vehicle engine. The clutch assembly includes a synchronizing clutch for rotating an output member and a primary clutch positionable to rotationally connect the output member to the primary drive shaft.

Classes IPC  ?

• F16H 37/02 - Combinaisons de transmissions mécaniques non prévues dans les groupes comportant essentiellement et uniquement des transmissions à engrenages ou à friction
• B60K 17/28 - Agencement ou montage des transmissions sur les véhicules caractérisées par la disposition, l'emplacement ou le type de prise de force

Abrégé

A priming valve for priming a centrifugal pump includes a valve assembly separating an inlet chamber from an outlet chamber. The inlet chamber is fluidly coupled to an intake for the centrifugal pump and the outlet chamber is fluidly coupled to a priming pump. A control valve is provided to operate the valve assembly in order to fluidly connect the inlet chamber with the outlet chamber. While the valve assembly fluidly connects the inlet chamber with the outlet chamber, the priming pump can operate to replace air in the intake and the centrifugal pump with water.

Classes IPC  ?

• F04D 9/04 - Utilisation de pompes d'amorçageUtilisation de pompes de surpression pour éviter le blocage par la vapeur
• F04D 9/00 - AmorçagePrévention du blocage par la vapeur

Abrégé

A priming valve (18) that primes a centrifugal pump (14) includes a valve assembly (46) separating an inlet chamber (40) from an outlet chamber (42). The inlet chamber is fluidly coupled to an intake of the centrifugal pump and the outlet chamber is fluidly coupled to a priming pump (12). A control valve (36) is provided to operate the valve assembly in order to fluidly connect the inlet chamber with the outlet chamber. While the valve assembly fluidly connects the inlet chamber with the outlet chamber, the priming pump can operate to replace air in the intake and the centrifugal pump with water.

Classes IPC  ?

• F04D 9/00 - AmorçagePrévention du blocage par la vapeur

Abrégé

Fire fighting equipment uses an electronically controlled direct injection foam delivery system. A water pump pumps water through a pipe. A foam pump pumps foam into a mixing chamber within the pipe to produce a water-foam mixture. A microprocessor-based control unit controls the water pump and foam pump. A conductivity sensor is coupled in-line with the pipe for monitoring conductivity of the mixture and providing a feedback signal to the control unit to regulate the foam pump. A speed sensor monitors the foam usage. A second conductivity sensor monitors conductivity of the water and provides a feedback signal to the control unit. The foam delivery system can be controlled by monitoring the flow rate of the water and regulating the foam pump to maintain a constant water and foam mixture. A temperature sensor compensates the regulation process for changes in water and foam mixture temperature.

Classes IPC  ?

• A62C 5/02 - Fabrication de substances extinctrices immédiatement avant l'emploi de mousse