Abstract: One embodiment of a safety barrier for a fire pit may include a fence. The safety barrier may also include a plurality of support structures adapted to support the fence around the fire pit in an upright position.

Abstract: A service counter having several spaced apart service stations each of which allows a single person to service two customers. Each service station includes a pair of customer windows facing a common service person workspace positioned therebetween so that the person is equally accessible to both customer windows, yet adjacent customer windows at different service stations face away from each other to insure privacy. The service counter maximizes equipment efficiency by utilizing a single unit of relatively expensive equipment for two customer windows, and it maximizes the efficiency of service personnel by allowing a person to service one customer while another customer at the same service station is preparing to do business with the service person.

Abstract: A wind tunnel having a test section, located within a plenum, with the walls of the test section containing a plurality of small holes which permits flow, through the holes and plenum, for unchoking the test section when the wind tunnel is operating near sonic speeds. A splitter plate, to suppress edge tones, is positioned in each of the holes along the direction of flow which divides the holes into a left and a right half with respect to the direction of flow.