Abstract: A modular and stowable drone landing gear system configured for repeated assembly and disassembly. The landing gear system makes use of reversible and interchangeable parts for easy assembly and replacement. The landing gear further makes use of energy-absorbent nesting brackets that absorb impact force and accordingly reduce force experienced by the rest of the components of the landing gear as well as provide nesting storage for the components in a disassembled and stowed state.

Abstract: A sound isolating ventilation panel is provided. The panel includes: a core assembly having a plurality of horizontal channels; a pair of cartridges having hollow centers and flanking both sides of the core assembly; and a pair of hollow sides flanking the pair of cartridges. Each of the cartridges has a proximally facing side having a plurality of air channel side apertures and a distally facing side comprising a plurality of sound resonator side apertures. A vertically oriented ventilation groove is formed through a front face of a first one of the cartridges and a vertically oriented ventilation groove is formed through a back face of the second one of the cartridges. The ventilation grooves, the hollow centers, the air channel side apertures and the horizontal channels together partially define Z-shaped air channels. The sound resonator side apertures and the hollow sides partially define a plurality of resonators.

Abstract: Aspects of the disclosure are directed to a storage device including a memory and a controller. In some examples, the controller is configured to measure an error rate of one or more blocks of the memory. In some examples, the controller is further configured to estimate, based at least in part on the error rate, a time shift indicative of a duration of time for which the storage device was powered off. In some examples, the controller is further configured to set a read level for multiple blocks of the memory, wherein the read level is determined based at least in part on the time shift.

Abstract: Aspects of a storage device including a memory and a controller are provided. The controller may measure an error rate of one or more blocks of the memory. In certain aspects, the controller may also estimate, based at least in part on the error rate, a time shift indicative of a duration of time for which the storage device was powered off. In some examples, the controller may also set a read level for multiple blocks of the memory, wherein the read level is determined based at least in part on the time shift.

Abstract: A sterilization box for treating room air is described. The air drawn into the sterilization box is irradiated with UV radiation, such as is provided from UV LED chips. The air may be drawn into the sterilization box by under-pressure within the box created by fans at the exit ports of the box. The air may be drawn into a first chamber of the box where it is treated with one wavelength of UV radiation and then passed to a second chamber, where it is treated with a second wavelength of UV radiation. After the air is sterilized, it can be put back into the room or building in which the fixture is placed.

Abstract: An article handler for attachment to a front end loader, the article handler comprising a support body and a jaw assembly, the support body comprising a proximal end adapted for attachment to the front end loader, and a distal end adapted for attachment of the jaw assembly. The article handler may be adapted to handle, install, and dismount ground engaging tools (GET), such as teeth for excavating buckets.

Abstract: System and method incorporating devices wirelessly connected to remote gateway locations or other devices. Remote gateway locations can be located on towers, buildings, silos, trees, utility poles, light poles or any other support structure capable of supporting the equipment used. A wired or wireless backhaul connects each remote gateway to a centralized headend gateway location via Ethernet, fiber, laser, or licensed or unlicensed microwave signals. Devices wirelessly connected to a remote gateway location device then act like a new remote gateway, redistributing signals to the surrounding area for additional CPEs to connect to that CPE. This continues over and over in a self-propagating manner, creating one or more network legs off the original remote gateway device.

Abstract: An interlocked single function activation valve for hydraulic systems is disclosed. The hydraulic valve prevents unsafe tie-down or safety override situations by requiring the safety mechanism to be reset each time the hydraulic system is used. The hydraulic valve includes an interlock spool that moves to an extension position when the hydraulic system is de-pressurized and then re-pressurized while the control lever is engaged (i.e., tied down). When the interlock spool is in the extension position, it prevents the system from reaching a working pressure, thereby forcing a reset of the control lever before the system can reach working pressure.

Abstract: An interlocked single function activation valve for hydraulic systems is disclosed. The hydraulic valve prevents unsafe tie-down or safety override situations by requiring the safety mechanism to be reset each time the hydraulic system is used. The hydraulic valve includes an interlock spool that moves to an extension position when the hydraulic system is de-pressurized and then re-pressurized while the control lever is engaged (i.e., tied down). When the interlock spool is in the extension position, it prevents the system from reaching a working pressure, thereby forcing a reset of the control lever before the system can reach working pressure.

Abstract: System for hydraulic valve assembly comprises a valve body having a cylindrical internal cavity and an axially moveable cylindrical spool supported therein. Hydraulic ports are defined through the valve body. The spool includes one or more radially oriented fluid control floating lands. Each floating land is configured to control one or more of fluid flow from a hydraulic port, and fluid flow to a hydraulic port. Each floating land includes a cylindrical control slide defining a hollow chamber, and an end section. The control slide is axially movable relative to the end section between a retention position and an extension position to thereby control one or more of fluid flow from the hydraulic port, and fluid flow to the hydraulic port.

Abstract: A chopping tool for safely chopping food. The chopping tool includes a blade with a blade edge at a distal end, and a spine at a proximal end. The spine includes two lateral edges with a receptor positioned near each lateral edge. The chopping tool also includes two handles engaging the blade, each handle including a scabbard section for grabbing with fingers, a horizontal section extending from the scabbard section towards and engaging the receptor on the spine, and a vertical section protruding from the scabbard section towards the distal end of the blade. Each handle is configured to pivot about a point of contact between a bottom end of the vertical section and a cutting surface to move the blade edge downward towards the cutting surface and upward away from the cutting surface in an alternating fashion for chopping an article placed on the cutting surface.

Abstract: A string instrument pick holder assembly including a pouch operable to store one or more instrument picks. The pouch having an inner surface configured to contain the one or more picks, and an outer surface located opposite the inner surface. The string instrument pick holder assembly further including a saddle having a first surface and a second surface, wherein the second surface is located opposite the first surface, and a strap coupled with the saddle, wherein the strap is operable connect the saddle with a string instrument. A first portion of a fastener is connected with the outer surface of the pouch, and a second portion of the fastener is coupled with the first surface of the saddle. The second portion of the fastener is operable to detachably connect with the first portion of the fastener.

Abstract: An unmanned aerial vehicle (UAV) can be configured for fire suppression and ignition. In some examples, the UAV includes an aerial propulsion system, an ignition system, and a control system. The ignition system includes a container of delayed-ignition balls and a dropper configured, by virtue of one or more motors, to actuate and drop the delayed-ignition balls. The control system is configured to cause the UAV to fly to a site of a prescribed burn and, while flying over the site of the prescribed burn, actuate one or more of the delayed-ignition balls. After actuating the one or more delayed-ignition balls, the UAV drops the actuated one or more delayed-ignition balls from the UAV onto the site of the prescribed burn.

Abstract: An unmanned aerial vehicle (UAV) can be configured for fire suppression and ignition. In some examples, the UAV includes an aerial propulsion system, an ignition system, and a control system. The ignition system includes a container of delayed-ignition balls and a dropper configured, by virtue of one or more motors, to actuate and drop the delayed-ignition balls. The control system is configured to cause the UAV to fly to a site of a prescribed burn and, while flying over the site of the prescribed burn, actuate one or more of the delayed-ignition balls. After actuating the one or more delayed-ignition balls, the UAV drops the actuated one or more delayed-ignition balls from the UAV onto the site of the prescribed burn.

Abstract: A string instrument pick holder assembly including a pouch operable to store one or more instrument picks. The pouch having an inner surface configured to contain the one or more picks, and an outer surface located opposite the inner surface. The string instrument pick holder assembly further including a saddle having a first surface and a second surface, wherein the second surface is located opposite the first surface, and a strap coupled with the saddle, wherein the strap is operable connect the saddle with a string instrument. A first portion of a fastener is connected with the outer surface of the pouch, and a second portion of the fastener is coupled with the first surface of the saddle. The second portion of the fastener is operable to detachably connect with the first portion of the fastener.

Abstract: A chopping tool includes a blade comprising a blade edge at a distal end, and a spine at a proximal end, the spine comprising two lateral edges with a receptor positioned near each lateral edge. The chopping tool also includes two handles engaging the blade, each handle including a scabbard section for grabbing with fingers, a horizontal section extending from the scabbard section towards and engaging the receptor on the spine, and a vertical section protruding from the scabbard section towards the distal end of the blade. Each handle is configured to pivot about a point of contact between a bottom end of the vertical section and a cutting surface to move the blade edge downward towards the cutting surface and upward away from the cutting surface in an alternating fashion for chopping an article placed on the cutting surface.

Abstract: An educational aid and educational system is provided that enables a seamless transition between theoretical teachings and practical demonstration. The educational aid comprises: a circuit component, including first and second terminals and a portion of a circuit there between; and a schematic of the portion of the circuit extending between the first and second terminals. The educational aid is configured to be coupled to other educational aids using the terminals, to simultaneously create a circuit and a corresponding schematic.

Abstract: A passive ventilation panel and system, in particular for use in doors, ceilings, walls and partitions enables an exchange of supply and return air for at least one room or a room, without the need for additional ventilation equipment, such as ducts, and without the needs to install wall openings or grills for the supply and exhaust air in the space.

Abstract: An article handler for attachment to a front end loader, the article handler comprising a support body and a jaw assembly, the support body comprising a proximal end adapted for attachment to the front end loader, and a distal end adapted for attachment of the jaw assembly. The article handler may be adapted to handle, install, and dismount ground engaging tools (GET), such as teeth for excavating buckets.

Abstract: A grow light system is disclosed that can produce an adjustable combined emission spectrum, as is useful to growing plants of different types, or as is useful to adjusting the spectrum provided to a given plant as it grows. The grow light can include a sensor system to detect the height of plants it is illuminating, and can via a cable hoist adjust the height of the grow light to maintain an optimal distance between the plants and the grow light. The grow light system preferably includes a computer device with a graphical user interface useable to set a plant-to-grow light distance, and/or to select a combined emission spectrum for the grow light, which may occur by selecting a particular plant type, variety, or group. The system may include a library of optimal settings to configure the system to optimally grow each selected plant type, variety, or group.