Abstract: An air diffuser for use at a ventilation outlet of an HVAC system. The air diffuser comprises a base platform having an opening plenum formed from injection-molded plastic, the base platform including a collar for attachment to the outlet, the plenum defined by a perimeter rim, the edges of the rim lying substantially within a first common plane, at least one first diffuser plate positioned over the plenum, the first diffuser plate formed from injection-molded plastic and having edges lying substantially within a second common plane, and a plurality of stems integrally molded with one or more of the first diffuser plate and the base, the stems configured to secure the first diffuser plate to the base platform, each of the stems having a first end sized to fit within a complimentary female receptacle formed in one of the first diffuser plate and the base platform, the stems being formed via injection molding with one of the first diffuser plate and the base platform.

Abstract: A sign assembly includes a panel and a base. The base is configured to be attached to the panel via a resilient member. The bottom surface of the base defines a pair of cavities. The cavities are positioned substantially adjacent to a forward edge of the bottom surface. A pair of wheel assemblies is secured within respective cavities on the bottom surface. Each wheel assembly includes a housing that houses an axle and wheel.

Abstract: An air diffuser for use at a ventilation outlet of an HVAC system. The air diffuser comprises a base platform having an opening plenum formed from injection-molded plastic, the base platform including a collar for attachment to the outlet, the plenum defined by a perimeter rim, the edges of the rim lying substantially within a first common plane, at least one first diffuser plate positioned over the plenum, the first diffuser plate formed from injection-molded plastic and having edges lying substantially within a second common plane, and a plurality of stems integrally molded with one or more of the first diffuser plate and the base, the stems configured to secure the first diffuser plate to the base platform, each of the stems having a first end sized to fit within a complimentary female receptacle formed in one of the first diffuser plate and the base platform, the stems being formed via injection molding with one of the first diffuser plate and the base platform.

Abstract: A sign assembly includes a base, a pair of spring members, and a panel. The spring members include a resilient portion that includes attachment means at a first end to enable attachment of the spring member to the base. The spring members also include a generally straight rod that extends from a second end of the resilient portion. The panel defines a pair of openings at a lower edge configured to slidably receive the rod of the spring members. The amount by which the rod slides into the panel is configured to secure the panel in an upright position.

Abstract: A sign assembly includes a base, a pair of spring members, and a panel. The spring members include a resilient portion that includes attachment means at a first end to enable attachment of the spring member to the base. The spring members also include a generally straight rod that extends from a second end of the resilient portion. The panel defines a pair of openings at a lower edge configured to slidably receive the rod of the spring members. The amount by which the rod slides into the panel is configured to secure the panel in an upright position.

Abstract: A sign assembly includes a base, a pair of spring members, and a panel. The spring members include a resilient portion that includes attachment means at a first end to enable attachment of the spring member to the base. The spring members also include a generally straight rod that extends from a second end of the resilient portion. The panel defines a pair of openings at a lower edge configured to slidably receive the rod of the spring members. The amount by which the rod slides into the panel is configured to secure the panel in an upright position.

Abstract: A sign assembly includes a panel and a base. The base is configured to be attached to the panel via a resilient member. The bottom surface of the base defines a pair of cavities. The cavities are positioned substantially adjacent to a forward edge of the bottom surface. A pair of wheel assemblies is secured within respective cavities on the bottom surface. Each wheel assembly includes a housing that houses an axle and wheel.

Abstract: A sign frame includes a panel with a first side extension and a second side extension. The first side extension defines an opening for receiving ballast. The first side extension also defines a hollow chamber for storing the ballast. The panel also includes an upper crossbar that extends between distal ends of the first and the second side extensions, and a lower crossbar that extends between proximal ends of the first and the second side extensions. The first and the second side extensions, upper cross bar, and lower crossbar define a front surface and rear surface. The front surface is configured to receive signage.

Abstract: A sign frame comprises a pair of upstanding leg members each having a proximate end and a tapered distal end, at least one top member connecting the leg members at the proximate ends thereof, and at least one cross member connecting the leg members between the proximate and distal ends thereof. The members together define a first sign mounting area. Within the sign frame is at least one mounting flange extending into the first sign mounting area from the sign frame, and at least one elongated stiffening rib upstands from and extends along each of the leg members.