Abstract: A multi-component proportioning system for dispensing a multi-component coating composition is provided. The delivery system is particularly useful in providing multi-component compositions to a multi-component dispenser. The system provides very accurate mix ratios due to the consistent, reproducible displacement of components from the liquid pump assemblies used in the multi-component proportioning system regardless of viscosity. Such accuracy eliminates improper mixing of components that can lead to reworking and lost time, materials, and profits.

Abstract: An improved method and apparatus for applying a multicomponent coating composition onto a substrate. The method comprises separately transporting at least one component under pressure to a proportioning device which provides a controlled ratio of the components. The components of the coating composition are then mixed and coated onto the substrate at ambient temperature or, to accelerate curing, at moderate temperatures. The method is especially useful for applying multipackage refinish coating compositions.

Abstract: A system for spraying a coating onto a substrate employing a vortex tube to supply warm air to a spray gun is disclosed. The system allows precise control of air temperature.

Abstract: A method of spraying a coating onto a substrate using low pressure, high volume air is disclosed. More specifically, the step of using a vortex tube with valves at both the hot and cold air discharge ends to supply the low pressure, high volume air to a spray gun is disclosed. The use of the vortex tube results in an inexpensive system, that can be used in electrically hazardous areas, and allows very precise control of air temperature.

Abstract: A multipackage system for providing a refinish coating composition and a method for applying the same onto a substrate. The method comprises separately transporting at least one component under pressure to a proportioning device which provides a controlled volumetric ratio of the components. The components of the coating composition are then mixed and coated onto the substrate at ambient temperature or, to accelerate curing, at moderate temperatures. The compositions involve new or modified existing chemistries that have a more limited pot life than conventionally formulated for commercial use.

Abstract: A cleaning composition comprises an aqueous emulsion of a non-aromatic organic phase stabilized with a blend of surfactants. The emulsion is characterized by a low content of volatile organic compounds (VOC) and superior cleaning properties. This cleaner is particularly useful for removing both water soluble and organic solvent soluble materials from automotive surfaces being refinished.

Abstract: A row crop planter supports at least two vertical guide making blocks to form superficial trenches about four or five inches deep precisely midway between adjacent rows as they are planted. Tires with trench-riding central ridges on front wheels of a tractor powering a subsequent row crop processing implement along these rows serve to guide the tractor down the rows. Vertical guide following blocks on such a subsequent processing implement such as a cultivator, for example, find and follow exactly the previously formed trenches and so serve to guide cultivator blades to follow every minor deviation of the rows, even on hillsides causing the implement to be tilted transversely of the direction of movement of the implement down the rows. The depth of the guide trenches and the depth of penetration of the guide following blocks is determined by implement support wheels near those blocks.

Abstract: A control system exhibiting more than one system response characteristic depending on input signal parameters, and without requiring discrete switching of system components, is disclosed. At least one system input signal of varying frequency and amplitude is supplied to both high pass and low pass filters, the output of one of which is amplitude limited and additively combined with the output of the other filter to form a first intermediate control signal which is subtractively combined with the input signal to form a second intermediate control signal. The first and second intermediate control signals are passed through signal transfer elements having different signal transfer characteristics, and then combined to provide multimode response.