Abstract: The present invention relates to a device for measuring a person's ventilation. The device includes a conduit with an exhaled-air receiving portion and an inhaled-air receiving portion. The device includes pressure and oxygen sensor sampling ports. The sampling ports are in fluid communication with the conduit. The device includes a deflector disposed within the conduit. The deflector is configured to deflect air exhaled into the exhaled-air receiving portion of the conduit away from the sensor ports.

Abstract: There is accordingly provided a device for measuring a person's ventilation including oxygen consumption. The device includes a breathing conduit with at least one sensor sampling port. The device includes a dehumidification conduit extending from the sensor sampling port towards a sensor. The dehumidification conduit has a proximal end portion flush with the sensor sampling port. The dehumidification conduit has a longitudinal axis about which the proximal end portion thereof extends. The breathing conduit is shaped to promote a flow of air adjacent the sensor sampling port in one or more directions perpendicular to the longitudinal axis.

Abstract: There is provided a device for measuring a person's ventilation including oxygen consumption. The device includes a breathing conduit including a wall with inner and outer sides and a bore extending therethrough. The device includes a dehumidification conduit with a proximal end portion positioned within the bore. The proximal end portion of the dehumidification conduit spans from the inner side to the outer side of the wall. A proximal end of the dehumidification conduit is flush with the inner side of the wall. The proximal end portion of the dehumidification conduit so positioned couples to the wall in a manner which promotes diffusion of water particles therethrough and outwards therefrom, while minimizing areas which accumulate micro-droplets and/or provide nucleation sites for condensation therewithin. The device includes a sensor which operatively connects to the breathing conduit via a distal end portion of the dehumidification conduit.

Abstract: There is provided a device for measuring a person's ventilation including oxygen consumption. The device includes a sensor assembly. The device includes a breathing conduit through which at least one exhalation is received. The device includes a dehumidification cartridge configured to receive a sample amount of said exhalation from the breathing conduit, dehumidify the sample amount of said exhalation, and direct the sample amount of said exhalation so dehumidified to the sensor assembly. The dehumidification cartridge includes a dehumidification conduit having a proximal end at said sensor sampling port and which extends from the sensor sampling port towards the sensor assembly. The dehumidification cartridge includes a dehumidification chamber enclosing the dehumidification conduit. The dehumidification chamber is shaped to promote a flow of air therethrough.

Abstract: There is accordingly provided a device for measuring a person's ventilation including oxygen consumption. The device includes a breathing conduit with at least one sensor sampling port. The device includes a dehumidification conduit extending from the sensor sampling port towards a sensor. The dehumidification conduit has a proximal end portion flush with the sensor sampling port. The dehumidification conduit has a longitudinal axis about which the proximal end portion thereof extends. The breathing conduit is shaped to promote a flow of air adjacent the sensor sampling port in one or more directions perpendicular to the longitudinal axis.

Abstract: There is provided a device for measuring a user's oxygen-consumption. The device includes a tubular member with a first tapered portion through which an exhalation of air enters into the device, a second tapered portion, and a constriction between the portions thereof. The devices includes a flow sensing mechanism in communication with the first tapered portion of the tubular member. The device includes an oxygen sensor in communication with the first tapered portion of the tubular member. The device is configured such that the oxygen sensor is passively supplied a portion of the exhalation of air by means of positive or negative differential pressure referenced between the first tapered portion and at least one of ambient air and the constriction of the tubular member.

Abstract: There is provided a device for measuring a user's oxygen-consumption. The device includes a venturi tube. The venturi tube has a first tapered portion, a second tapered portion that is more tapered compared to the first tapered portion, and a constriction between the portions thereof. The device includes at least one pressure sensor in communication with the constriction and the first tapered portion of the venturi tube. The device includes an oxygen sensor in communication with the constriction and the first tapered portion of the venturi tube.

Abstract: The present invention relates to a device for measuring a person's ventilation. The device includes a conduit with an exhaled-air receiving portion and an inhaled-air receiving portion. The device includes pressure and oxygen sensor sampling ports. The sampling ports are in fluid communication with the conduit. The device includes a deflector disposed within the conduit. The deflector is configured to deflect air exhaled into the exhaled-air receiving portion of the conduit away from the sensor ports.

Abstract: There is provided a device for measuring a user's oxygen-consumption. The device includes a venturi tube. The venturi tube has a first tapered portion, a second tapered portion that is more tapered compared to the first tapered portion, and a constriction between the portions thereof. The device includes at least one pressure sensor in communication with the constriction and the first tapered portion of the venturi tube. The device includes an oxygen sensor in communication with the constriction and the first tapered portion of the venturi tube.

Abstract: The invention is an improved line blind valve which provides absolute positive flow shut-off in piping systems. It uses fluid pressure to separate the seal surfaces while ensuring the end connections do not move relative to each other. Once separated, the blind can be moved easily into either the closed blind position or the open full flow position. The assembly consists of an outer housing, two end pipes and a sliding carrier that allows a blind to be either inserted into the flow or removed by pivoting the blind about a pin.

Abstract: The invention is an improved line blind valve which provides absolute positive flow shut-off in piping systems. It uses fluid pressure to separate the seal surfaces while ensuring the end connections do not move relative to each other. Once separated, the blind can be moved easily into either the closed blind position or the open full flow position. The assembly consists of an outer housing, two end pipes and a sliding carrier that allows a blind to be either inserted into the flow or removed by pivoting the blind about a pin.