Abstract: A lightning diverter system is disclosed including an outer rod having a first outer rod segment, a second outer rod segment, and a housing cabinet; and an inner rod having a first inner rod segment and a second inner rod segment. The second inner rod segment is in attachment with the second outer rod segment. The inner rod and the outer rod are concentric and configured to move between a rod extended configuration and a rod retracted configuration. A conductive break is in attachment with the outer rod and the inner rod. The lightning diverter system further includes a sensor configured for monitoring an environmental parameter and sending a first signal to a processor configured for determining if the environmental parameter fails satisfy an environmental parameter threshold and sending a second signal to move the lightning diverter system between the rod retracted configuration and rod extended configuration.

Abstract: A lightning diverter system is disclosed including an outer rod having a first outer rod segment, a second outer rod segment, and a housing cabinet; and an inner rod having a first inner rod segment and a second inner rod segment. The second inner rod segment is in attachment with the second outer rod segment. The inner rod and the outer rod are concentric and configured to move between a rod extended configuration and a rod retracted configuration. A conductive break is in attachment with the outer rod and the inner rod. The lightning diverter system further includes a sensor configured for monitoring an environmental parameter and sending a first signal to a processor configured for determining if the environmental parameter fails satisfy an environmental parameter threshold and sending a second signal to move the lightning diverter system between the rod retracted configuration and rod extended configuration.

Abstract: A lightning diverter system is disclosed including an outer rod having a first outer rod segment, a second outer rod segment, and a housing cabinet; and an inner rod having a first inner rod segment and a second inner rod segment. The second inner rod segment is in attachment with the second outer rod segment. The inner rod and the outer rod are concentric and configured to move between a rod extended configuration and a rod retracted configuration. A conductive break is in attachment with the outer rod and the inner rod. The lightning diverter system further includes a sensor configured for monitoring an environmental parameter and sending a first signal to a processor configured for determining if the environmental parameter fails satisfy an environmental parameter threshold and sending a second signal to move the lightning diverter system between the rod retracted configuration and rod extended configuration.

Abstract: Methods, apparatus, systems, and computer-readable media are provided for employing an environment of sensor arrays at an air handling unit. Each sensor array can include one or more sensors for collecting data related to a portion of an air handling unit. Additionally, each sensor can be in communication with each other and/or each sensor array can be in communication with a remote server for processing the collected data. The collected data can be correlated in order to identify how various portions of the air handling unit are affected by other portions of the air handling unit and other systems that are external to the air handling unit. For instance, certain properties of motor and/or filter operations can be indicative of heating and/or cooling coil fouling and/or changes in air pressure of rooms served by an air handling unit.

Abstract: A filter module configured for exhaust application, and a method and apparatus for testing the same are provided. In one embodiment, the filter module includes a downstream sampling port configured to allow a technician to sample flow, downstream of the filter module, from the cleanroom side of a filter module. In another embodiment, a shroud adapted to sealing engage a filter module under test is provided and includes a tube, disposed in the shroud, that couples a port to a downstream sampling port of the filter module.

Abstract: A method of ejecting an ink droplet from an inkjet nozzle device having an actuator and a meniscus pinned across a nozzle opening. The method includes the steps of: delivering a sub-ejection pulse to the actuator for perturbing the meniscus from a quiescent state; and subsequently delivering an ejection pulse to the actuator at an instant when the meniscus is perturbed from its quiescent state, the ejection pulse ejecting the ink droplet from the nozzle opening. A time period between a trailing edge of the sub-ejection pulse and a leading edge of the ejection pulse controls a droplet volume of the ejected ink droplet.

Abstract: An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor.

Abstract: Embodiments described herein relate to a roomside replaceable fan filter unit having an integral aerosol injector ring. The roomside replaceable fan filter unit has a housing. The housing has a top wall having an inlet disposed therethrough, a plurality of sidewalls sealingly attached to the top wall at a first end, wherein the top wall and sidewalls partially enclose an interior volume, a mounting flange attached to the sidewalls on a second end extending from the sidewall in a direction from the interior volume, a sealing element disposed on the sidewall proximate the second end, wherein the sealing element extends into the interior volume and is adapted to sealingly engage a replaceable air filter, and a filter receiving aperture is disposed about the sealing element of the housing. An aerosol injector and a fan blade positioned to drive air through the inlet and into the housing, wherein the fan blade is disposed between the aerosol injector and the filter receiving aperture.

Abstract: Embodiments described herein relate to a roomside replaceable fan filter unit having an integral aerosol injector ring. The roomside replaceable fan filter unit has a housing. The housing has a top wall having an inlet disposed therethrough, a plurality of sidewalls sealingly attached to the top wall at a first end, wherein the top wall and sidewalls partially enclose an interior volume, a mounting flange attached to the sidewalls on a second end extending from the sidewall in a direction from the interior volume, a sealing element disposed on the sidewall proximate the second end, wherein the sealing element extends into the interior volume and is adapted to sealingly engage a replaceable air filter, and a filter receiving aperture is disposed about the sealing element of the housing. An aerosol injector and a fan blade positioned to drive air through the inlet and into the housing, wherein the fan blade is disposed between the aerosol injector and the filter receiving aperture.

Abstract: Embodiments described herein relate to a method for utilizing a roomside replaceable fan filter unit having an integral aerosol injector ring. The method begins by replacing a used filter from the fan filter unit with a replacement filter from a roomside of the fan filter unit. Air is then pulled into a housing of the replaceable fan filter unit and out through the replacement filter to the roomside by a fan module. Finally, an aerosol challenge is provided at a location adjacent and upstream of the fan module.

Abstract: A method of ejecting an ink droplet from an inkjet nozzle device having an actuator and a meniscus pinned across a nozzle opening. The method includes the steps of: delivering a sub-ejection pulse to the actuator for perturbing the meniscus from a quiescent state; and subsequently delivering an ejection pulse to the actuator at an instant when the meniscus is perturbed from its quiescent state, the ejection pulse ejecting the ink droplet from the nozzle opening. A time period between a trailing edge of the sub-ejection pulse and a leading edge of the ejection pulse controls a droplet volume of the ejected ink droplet.

Abstract: An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor.

Abstract: An inkjet printhead integrated circuit includes: a silicon-on-insulator substrate having a first layer of silicon, an insulator layer disposed on the first layer of silicon and a second layer of silicon disposed on the insulator layer; a nozzle plate disposed on the second layer of silicon; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber defined in the second layer of silicon, each nozzle chamber having a roof which is part of the nozzle plate; an actuator for ejecting ink through the nozzle opening; and drive circuitry connected to the actuator.

Abstract: Embodiments described herein relate to a method for utilizing a roomside replaceable fan filter unit having an integral aerosol injector ring. The method begins by replacing a used filter from the fan filter unit with a replacement filter from a roomside of the fan filter unit. Air is then pulled into a housing of the replaceable fan filter unit and out through the replacement filter to the roomside by a fan module. Finally, an aerosol challenge is provided at a location adjacent and upstream of the fan module.

Abstract: Embodiments described herein relate to roomside replaceable fan filter units. In one embodiment, a roomside replaceable fan filter unit includes a housing having a filter receiving aperture and an air inlet, an aerosol injector, and a fan filter unit. The fan filter unit is coupled to the housing between the aerosol injector and the filter receiving aperture. In another embodiment, a roomside replaceable fan filter unit includes a housing having a sidewalls and a top wall that define an interior volume, an air inlet formed in the top wall, and a filter receiving aperture disposed opposite the top wall. The roomside replaceable fan filter unit also includes a fan filter unit disposed in the interior volume between the air inlet and the filter receiving aperture. The roomside replaceable fan filter unit includes an aerosol injector disposed upstream of the fan filter unit in the interior volume.

Abstract: Embodiments described herein relate to roomside replaceable fan filter units. In one embodiment, a roomside replaceable fan filter unit includes a housing having a filter receiving aperture and an air inlet, an aerosol injector, and a fan filter unit. The fan filter unit is coupled to the housing between the aerosol injector and the filter receiving aperture. In another embodiment, a roomside replaceable fan filter unit includes a housing having a sidewalls and a top wall that define an interior volume, an air inlet formed in the top wall, and a filter receiving aperture disposed opposite the top wall. The roomside replaceable fan filter unit also includes a fan filter unit disposed in the interior volume between the air inlet and the filter receiving aperture. The roomside replaceable fan filter unit includes an aerosol injector disposed upstream of the fan filter unit in the interior volume.

Abstract: A method of providing a printhead assembly having a hydrophilic ink pathway and a hydrophobic ink ejection face. The method includes the steps of: providing a printhead assembly comprising a printhead attached to an ink supply manifold, the printhead comprising a nozzle plate having a hydrophobic coating and a protective metal film disposed on the hydrophobic coating; treating surfaces of an ink pathway in the printhead assembly with a solution comprising an alkoxylated polyethyleneimine; drying the surfaces; and removing the protective metal film so as to reveal the hydrophobic coating.

Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. The printhead is comprised of a plurality of printhead modules having first and second opposite ends butted across a width of a page. Each butting pair of printhead modules defines a common join region, wherein a nozzle pitch across the join region exceeds one nozzle pitch, one nozzle pitch being defined as a minimum longitudinal distance between a pair of nozzles in a same nozzle row. A first nozzle positioned at the first end of a first printhead module in a butting pair is configured to fire ink droplets into a respective join region.

Abstract: A MEMS integrated circuit includes a silicon substrate having a frontside with a drive circuitry layer and a backside. A MEMS layer is disposed on the drive circuitry layer. The MEMS layer includes a plurality of MEMS devices electrically connected to the drive circuitry layer. Connector posts extends from the drive circuitry layer to a contact pad positioned in a roof of the MEMS layer and through-silicon connectors extending linearly from the contact pad, through the drive circuitry layer and the silicon substrate, towards the backside of the silicon substrate. Each through-silicon connector terminates at a backside integrated circuit contact, such that each integrated circuit contact is electrically connected to the drive circuitry layer via the contact pad positioned in the roof of the MEMS layer.

Abstract: A stationary pagewidth inkjet printhead is comprised of a plurality of printhead integrated circuits butted end-on-end across the pagewidth. The printhead includes one or more nozzle rows extending along a longitudinal axis of the printhead, each nozzle row comprising a plurality of nozzles. One or more of the nozzles are configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis.