Abstract: A guidance system for guiding a clinician in delivering a needle to a target location within a hollow organ in a patient's body. The guidance system includes: a computing device; a target sensor configured to provide target sensor data describing the position of the target sensor, wherein the target sensor is configured to be positioned at or proximate to the target location within the hollow organ; a needle sensor configured to be carried by the needle or a device on which the needle is mounted, and to provide needle sensor data describing the position and orientation of the needle; at least one information delivery device configured to deliver information to the clinician.

Abstract: A powered air purifying respirator (PARR) has a yoke and a pump. The yoke defines an air inlet and an air outlet fluidly connected via an air flow passage. The pump is disposed within an interior of the yoke and is configured to pump air from the air inlet to the air outlet via the air flow passage. The yoke is shaped to fit around the user's neck and be supported by the user's shoulders. A hood for a PARR has a head portion configured to receive a user's head, and a one-way exhaust valve configured to vent air from an internal environment of the hood to an environment external to the hood. The hood is configured to receive a yoke of the PARR.

Abstract: An energy storage system comprises a cable (13) and a mass 20 suspended from the cable (13) in a shaft (12). The cable (13) is attached to a winch 11 by which the mass may be raised in the shaft (12) to store potential energy, and the mass is lowerable in the shaft (12) to release the potential energy. The mass comprises at least two sections clamped together around the cable (13). More particularly, the system comprising a plurality of cables (13) and a plurality of multi-section masses each suspended in the shaft (12) by a respective cable (13), the masses being raised and lowered in synchronism in the shaft (12). The multi-section masses fit together side-by-side in the shaft (12) to form an overall cylindrical mass body, the multi-section masses each forming a quadrant of the cylindrical mass body.

Abstract: An energy storage system comprises a cable (13) and a mass 20 suspended from the cable (13) in a shaft (12). The cable (13) is attached to a winch 11 by which the mass may be raised in the shaft (12) to store potential energy, and the mass is lowerable in the shaft (12) to release the potential energy. The mass comprises at least two sections clamped together around the cable (13). More particularly, the system comprising a plurality of cables (13) and a plurality of multi-section masses each suspended in the shaft (12) by a respective cable (13), the masses being raised and lowered in synchronism in the shaft (12). The multi-section masses fit together side-by-side in the shaft (12) to form an overall cylindrical mass body, the multi-section masses each forming a quadrant of the cylindrical mass body.

Abstract: An apparatus for converting wave energy into electrical energy comprising a first floating hull (201) interconnected to a second floating hull (202). A winch mechanism for use in raising a weight suspended on a cable (14). The winch mechanism is operated in response to movement of the first hull (201) relative to the second hull (202), and a generator driven by the downward movement of the weight. Moreover, a method for converting wave energy into electrical energy.

Abstract: A towel dispenser for dispensing a towel loop so that the planes of the exit leg and the return leg of the loop are substantially in line with the user. The towel dispenser comprises a housing having front and rear walls and joined by a top wall and a base. The housing is adapted for mounting so that the rear wall is adjacent the wall or other structure on which the dispenser is mounted. A towel outlet and inlet slot are provided in the base and extend between the front and rear walls. A skid plate supports a clean towel roll which is dispensed between a drive and pinch roller. A take up roller winds up used towel. When not in use, the towel loop is substantially completely withdrawn into the housing.