Abstract: A feeder pole apparatus for blast hole surveying, the feeder pole comprising: a tubular member having a first end and a second end; a handle portion connectable to the tubular member adjacent to the first end. A nozzle having a tip and a base with an opening, wherein the opening of the base is connectable to the second end of the tubular member; the nozzle comprising a side wall aperture positioned on a side wall of the nozzle, and an elongate slot joining the side wall aperture to the nozzle tip.

Abstract: An optical system includes a waveguide having a guiding core formed from erbium-doped yttrium aluminum garnet and a plurality of first cladding layers, wherein at least two of the first cladding layers are disposed adjacent opposite sides of the guiding core and a pump source for generating an electromagnetic radiation having a wavelength in the range of 900 to 1000 nanometers, wherein the pump source directs the electromagnetic radiation into at least the guiding core to pump the guiding core into an upper state.

Abstract: This is a toner control system for use in a cleaning station of a xerographic marking apparatus. A sensor is located in the air conduits of the system to measure airflow throughout the system. The sensor is in contact with a controller that is configured to adjust the blower speed to normal conditions (i.e. sea level and clean filter conditions) as the flow rate is reduced due to normal apparatus use. The system has an air blower(s), a filter(s), air conduits, a sensor(s) and a controller(s) in communication with the sensor(s).

Abstract: This is a toner control system for use in a cleaning station of a xerographic marking apparatus. A sensor is located in the air conduits of the system to measure airflow throughout the system. The sensor is in contact with a controller that is configured to adjust the blower speed to normal conditions (i.e. sea level and clean filter conditions) as the flow rate is reduced due to normal apparatus use. The system has an air blower(s), a filter(s), air conduits, a sensor(s) and a controller(s) in communication with the sensor(s).

Abstract: An optical assembly with mounting provided to effectively transfer heat away from an optic, such as a slab or waveguide amplifier or laser disk, while limiting internal stresses. The assembly includes an optic with a planar surface. A heat sink is positioned in the assembly with an upper surface next to the planar surface of the optic. The upper surface of the heat sink comprises a recessed surface defining a reservoir for containing a compliant heat transfer material. The assembly may further include a volume of the heat transfer material, such as a liquid metal or thermally conductive gel, in the reservoir of the heat sink. In one embodiment, the optic is a slab amplifier with a reflective coating or layer that directly contacts the heat transfer material in the heat sink reservoir or a foil or membrane is provided between the heat transfer material and the slab.

Abstract: An optical assembly with mounting provided to effectively transfer heat away from an optic, such as a slab or waveguide amplifier or laser disk, while limiting internal stresses. The assembly includes an optic with a planar surface. A heat sink is positioned in the assembly with an upper surface next to the planar surface of the optic. The upper surface of the heat sink comprises a recessed surface defining a reservoir for containing a compliant heat transfer material. The assembly may further include a volume of the heat transfer material, such as a liquid metal or thermally conductive gel, in the reservoir of the heat sink. In one embodiment, the optic is a slab amplifier with a reflective coating or layer that directly contacts the heat transfer material in the heat sink reservoir or a foil or membrane is provided between the heat transfer material and the slab.