Abstract: A joist assembly system that is structured for dynamic retrieval of components, dynamic and precise positioning and location of retrieved components, assembly of the components to form a joist, and delivery of the assembled joist. The joist assembly system has a plurality of material handling systems, a plurality of welding systems, and a rigging table system. The material handling systems are structured to load and position the components such as chords and webs onto the rigging table. The rigging table in turn supports the chords or webs. Subsequently, the plurality of welding systems weld the webs to the chords to form the joist.

Abstract: A tracking system for locating arrows used in bow-and-arrow hunting is disclosed. The tracking system comprises a hand-held transmitter operated by a user and a receiving module embedded in an arrow. A user may locate an arrow after shooting my activating the transmitter to emit an RF signal. The receiving module in the arrow receives the RF signal and emits a sound or illuminates a LED. The transmitter may be configured to locate specific arrows of a quiver by sending an individualized RF signal to which only a specific arrow receiving module is responsive.

Abstract: A tracking system for locating arrows used in bow-and-arrow hunting is disclosed. The tracking system comprises a hand-held transmitter operated by a user and a receiving module embedded in an arrow. A user may locate an arrow after shooting my activating the transmitter to emit an RF signal. The receiving module in the arrow receives the RF signal and emits a sound or illuminates a LED. The transmitter may be configured to locate specific arrows of a quiver by sending an individualized RF signal to which only a specific arrow receiving module is responsive.

Abstract: An enhanced array of light fixtures for providing both light and a desired non-light feature within an illuminated area of a structure. The enhanced array is formed from a first plurality of light fixtures that are adapted for emitting light and a reduced plurality of enhanced light fixtures comprised of a subset of the first plurality of light fixtures that are adapted for emitting light and also for supporting a corresponding plurality of auxiliary non-light-emitting devices that require a different voltage and are adapted for providing a desired non-light feature within the illuminated area of the structure.

Abstract: An enhanced array of light fixtures for providing both light and a desired non-light feature within an illuminated area of a structure. The enhanced array is formed from a first plurality of light fixtures that are adapted for emitting light and a reduced plurality of enhanced light fixtures comprised of a subset of the first plurality of light fixtures that are adapted for emitting light and also for supporting a corresponding plurality of auxiliary non-light-emitting devices that require a different voltage and are adapted for providing a desired non-light feature within the illuminated area of the structure.