Abstract: A fan assembly designed for quick assembly and disassembly can include a housing, a fan and a motor disposed within the housing, a first guard located on a first side and a second guard located on a second side of the housing. The fan assembly can include a tensioner mechanism provided on an exterior of the housing to secure the first and the second guards to the housing. The fan assembly can be assembled by securing a plurality of struts to an interior side of a housing, mounting a fan and motor to the plurality of struts, inserting first and second guards within the housing proximate the inlet and outlet ends, and tensioning the first and second free ends of the housing to secure the first and second guards within the housing.

Abstract: A rotary vane pump including a housing, and a motor. The motor includes a shaft which is coupled to a rotor. The rotor defines a plurality of slots. A plurality of free moving vanes are disposed within the slots. In one example, the rotor is formed from a first material and the plurality of vanes are formed from the first material and impregnated with a second material. The first material can be a carbon material. The second material can be a resin material, an antimony material, a copper material, or a silver material.

Abstract: A plaque for a radiant heating system can include a main body defining an outer surface and a plurality of pores defined within the main body, wherein at least some of the plurality of pores are disposed in a non-parallel relationship with at least some others of the plurality of pores, or wherein at least some of the pores are parallel with each other. A burner assembly including a plurality of adjacently arranged plaques reduces the ignition time and delay for adjacent plaques after the central plaque has been ignited.

Abstract: A forced air heater that includes two air moving devices for improved control of air and fuel mixture for combustion, and improved air flow the heater. In addition to better air flow, the heater includes an improved fuel system that utilizes a pump and delivery controls to accommodate reduced air flow while avoiding incomplete combustion and fume odors.