Abstract: This disclosure relates to various multi-rotor aircrafts including at least one passively tiltable rotor group which may be tilted, typically in a direction of their movement. More importantly, the passively tiltable rotor group can tilt on its own, without having to include any additional electric motor or other power generating devices. This disclosure relates to various multi-rotor aircrafts including various load sharing units capable of taking up at least a portion of a weight load of the aircraft to itself, thereby diverting that portion of the weight load from a tilting unit. Therefore, the tilting units may be tilted more easily under the reduced weight load and friction. This disclosure further relates to various methods of fabricating or operating such passively tiltable rotor groups, tilting units, or load sharing units, and various methods of incorporating such into the multi-rotor aircraft.

Abstract: A system for converting an existing traffic intersection into an intersection having a roundabout traffic control feature includes a center island framework, one or more splitter island frameworks, and one or more diverter frameworks. The frameworks are secured to the road surface, and fill material is added to free spaces defined in the frameworks to thereby form a center island, one or more splitter islands, and one or more diverters. The system allows a roundabout to be implemented into an existing intersection on a temporary or semi-permanent basis, in a minimal amount of time and without requiring significant construction at the site of the intersection.

Abstract: Methods of fabricating a light-emitting device are provided. A light-emitting device can be formed from bonding a lens including a plug and a cap to an LED package including a socket configured to receive the plug. The lens can be fabricated using an injection mold formed from a well secured to the LED package and injecting a material into the injection mold to cure into a shape of the lens. The lens can also be fabricated using a blank about the shape of the lens and machining the blank to produce the plug and the cap of the lens. The lens can be bonded to the LED package using a convex bead of adhesive deposited on the surface of the LED package and spreading the adhesive between the lens and the LED package.

Abstract: Methods of forming LED packages and light emitting devices are provided. LED packages and light emitting devices are preferably formed from ceramic layers, such as AlN, though layers of non-ceramic materials can also be used. The layers are formed to include vias, apertures, and metallization layers. The layers are then bonded together to form a panel. The panel is scribed to form a grid of snap lines and then the panel is fractured along the snap lines. To form light emitting devices from the panel, LED dies are added and encapsulated before the panel is fractured.

Abstract: An air filter system includes a housing having, for example, a rear panel and a side panel, each having a top edge formed to interface to the hood of a vehicle so that the housing incorporates the vehicle hood to provide thermal isolation of intake air from engine compartment heat. The air filter system connects to a stock air intake tract through an air intake tube. The housing has a diagonal panel that the air intake tube is attached to and passes through. The diagonal panel is disposed at an angle that provides positioning of the air intake tube so that an effluent end of the air intake tube matches the stock location of the stock air intake tract. A washable, reusable air filter supported by the air intake tube filters the intake air and passes it through the air intake tube into the stock air intake tract.