Abstract: A portable industrial heater including a housing having an air inlet and an air outlet, one or more burners housed within the housing and configured to heat air passing through the housing from the air inlet to the air outlet, and a generator selectively providing power to the one or more burners. The air inlet and the air outlet are positioned on a same side of the housing.

Abstract: A shock absorbent bulbholder mounting assembly including a yoke support and a bulbholder interconnected by a pair of spring mounted subassemblies. Each of the subassemblies includes an elongated arm strap adjustably attached to rotate with respect to a respective arm section of the yoke support, and an elongated bulbholder strap attached to a respective side member extending from opposing sides of the bulbholder. The arm strap and the bulbholder strap are disposed in spaced parallel planes. The longitudinal axes of the straps are oriented at right angles to one another, and each end of each strap is connected by two springs to opposite ends of the other strap. Four springs thus span the gap between the straps and each spring is oriented at a 45.degree. angle with respect to the longitudinal axes of the straps.

Abstract: A portable light support apparatus having a telescoping mast unit. The apparatus includes a mast support unit (11) that provides a housing unit (14) for containing a generator unit and a hydraulic operating system, and a wheel assembly (16) and tongue unit (17) for facilitating portability of the housing unit (14). A telescoping mast unit (12) pivotally connects to the mast support unit (11) and provides for a vertical lock unit (32) and a safety lock unit (34) to prevent the apparatus from elongating unless in a vertical position. A rotating light bar (86) connects to the top of the telescoping mast unit (12) such that electric lights mounted thereon can be rotated from a remote position.