Abstract: An apparatus which provides a visual indication to the operator of a forklift that the forks are properly vertically aligned, the apparatus having a laser module which produces a visible light beam at the same height as the forks creating a focused dot or similar shape on a solid object. The laser module is retained in a laser housing which is preferably mounted onto the carriage of the forklift between the forks. Vibration-responsive, height-responsive, distance-to-load-responsive and temperature-responsive actuation means, alone or in combination, control the operational state of the laser module.

Abstract: A filter and dehydrator device comprising a substantially cylindrical housing having an open end, a removable end cap attached to the open end and forming a gas-tight seal, the end cap having a sight glass, and gas conduits connected to said housing, one on the closed end and one on the side wall. A cylindrical filter core composed of a dehydrator material fits within the housing and has a saturation indicator material impregnated or attached to one end. The opposite end of the filter core has an internal cylindrical chamber extending at least two-thirds of the length of the filter core. A gasket is mounted on the circumference of the filter core such that gas must pass by the indicator material in order to flow from one gas conduit to the other.

Abstract: An apparatus and method for recovering and purifying refrigerant from refrigeration units where the refrigerant is routed through expansion means into the internal coil of a purification unit, causing the coil to cool. The refrigerant exits the coil and is subsequently passed back into the internal chamber of the purification unit, where impurities are condensed onto the cool coil. The purified refrigerant is then passed into storage means.