Abstract: Apparatus for a bike rack for securing at least one bicycle are described herein. The bike rack is attachable to a vehicle receiver hitch. The bike rack includes a hub assembly, hitch insert assembly, and support wing assembly. The tub assembly includes a pair of hubs each having an arm. The hitch insert assembly includes a first end and a second end. The first end is located within the hub assembly and the second end is engageable with the receiver hitch. The hubs are rotatably adjustable about the first end of the hitch insert assembly. The support wing assembly includes a first wing engageable with the arm of the first hub and a second wing engageable with the arm of the second hub. The bike rack also includes an integral locking member and a pair of independently moveable cradles on each wing. Each cradle includes a bike support member.

Abstract: A floor sweeper for recovering material from a surface to be cleaned comprises a handle assembly pivotably attached to a foot assembly. The foot assembly comprises a housing forming a brush chamber having a bottom opening. The foot assembly comprises a pair of driving gears and a split brush assembly rotatably mounted within the brush chamber and adapted to contact the surface through the opening. The brush assembly comprises two separately-rotatable halves each corresponding to one of the driving gears, with each half comprising a brush core, brush paddles or bristles affixed to an exterior of the brush core, and a brush gear adapted for rotation with the brush core. Each brush gear is driven by a corresponding driving gear to the corresponding brush core as the floor assembly is moved across the surface in order to drive the brushes to cleaning of the surface.

Abstract: Apparatus for a bike rack for securing at least one bicycle are described herein. The bike rack is attachable to a vehicle receiver hitch. The bike rack includes a hub assembly, hitch insert assembly, and support wing assembly. The tub assembly includes a pair of hubs each having an arm. The hitch insert assembly includes a first end and a second end. The first end is located within the hub assembly and the second end is engageable with the receiver hitch. The hubs are rotatably adjustable about the first end of the hitch insert assembly. The support wing assembly includes a first wing engageable with the arm of the first hub and a second wing engageable with the arm of the second hub. The bike rack also includes an integral locking member and a pair of independently moveable cradles on each wing. Each cradle includes a bike support member.

Abstract: An active gunshot warning system which uses acoustic sensors mounted on moving vehicles, fixed locations, or in combination with moving vehicles and fixed locations. The sensors detect the occurrence of gunshots, and uses audio information from the gunshots in combination with a blast library to identify the type of weapon or weapons used. The sensors detect, when more than one gunshot is detected, and if the gunshots come from a stationary location or are moving. Information related to the gunshots, detailing location, direction of movement, number of shots fired, and type of weapon or weapons is automatically forwarded to police vehicles, or to the military where appropriate, to assist the authorities in their response to the gunshots. A communication and warning system is also used in combination with the gunshot protection system to define locations within the geographic area that may be at risk and to notify individuals within that geographic area of potential danger.