Abstract: A flat spring deflectable sign stand assembly principally intended for portable, temporary roadside signs. The flat steel spring allows for improved deflection strength to withstand forces caused by air turbulence from weather conditions and passing vehicles. The quick-release collapsible leg assembly allows for easy storage and on-site assembly of the stand. Telescopic legs allow for proper positioning and stability of the stand under varying roadside conditions.

Abstract: A receiver for a sign panel having a vertical rib defines upper and lower spaced-apart internal cavities, one of which receives the vertical rib and the other of which receives a vertical support from a sign stand, for example. A catch extends into the upper cavity so as to engage the rib. The invention finds particular application with sign panel supporting ribs which have plastic pockets fitted thereto to reduce wear and tear on the rib end.

Abstract: A receiver for a sign panel having a vertical rib defines upper and lower spaced-apart internal cavities, one of which receives the vertical rib and the other of which receives a vertical support from a sign stand, for example. A catch extends into the upper cavity so as to engage the rib. The invention finds particular application with sign panel supporting ribs which have plastic pockets fitted thereto to reduce wear and tear on the rib end.

Abstract: A base is provided for use with warning signs and the like. A metal structural framework is fitted to the underside of an elastomeric body in the form of a monolithic slab. Forces from the sign panel are transmitted through the structural framework, which includes a plurality of outwardly radiating legs. Forces are transmitted to the ends of the legs, which preferably are fitted with outwardly extending feet. Force loadings are transmitted through the structural framework rather than the elastomeric body, which provide a ballast for the structural framework.

Abstract: The sign stand assembly includes a sign panel, support base and an upright mast between the two. The support base defines a locking recess and a hollow leg is pivotally connected to a plate portion and extending from the support base. The locking pin and actuator are carried within the hollow leg with the actuator carrying an outward protruding button. The actuator includes a medial portion defining an opening to receive the locking pin in interlocking engagement therewith.

Abstract: The sign stand assembly includes a sign panel, support base and an upright mast between the two. The support base defines a locking recess and a hollow leg is pivotally connected to a plate portion and extending from the support base. The locking pin and actuator are carried within the hollow leg with the actuator carrying an outward protruding button. The actuator includes a medial portion defining an opening to receive the locking pin in interlocking engagement therewith.

Abstract: A sign stand assembly having a message panel and a mast. A mast clamp is coupled to the lower end of the mast and a clevis is coupled to the mast clamp. A resilient support assembly includes a coil spring and a spring mounting adapter threadingly engaged with the upper end of the coil spring. A keyed portion including a mounting surface and a pair of key members upwardly protruding therefrom, comprising a concave socket for receiving the clevis with a close tolerance fit preventing rotation of the clevis.