Abstract: A vapor compression thermal control system having at least one electrically powered evaporator fan and an apparatus for preventing compressor overloading apparatus having a sensor that measures temperature of air entering the evaporator. That measured temperature is compared with at least one predetermined temperature setting to activate a predetermined evaporator blower on/off duty cycle when the measured temperature exceeds the predetermined temperature. Alternatively, the apparatus can have a sensor that measures temperature of air being used to cool the condenser, and that measured temperature is then compared with at least one predetermined temperature setting to activate a predetermined evaporator blower on/off duty cycle when the measured temperature exceeds the predetermined temperature. In either case, it is evaporator air flow that is modulated when the system is operated as a heat pump. For liquid cooled evaporators, however the circulation pump instead of the fan is modulated.

Abstract: A method for use in CAD modeling software to define product structure based on virtual components created independent from geometry and without the need to create files on disk. With the additional capability of assigning geometry to the virtual components of the product structure that sets and orients the virtual components and manages multiple occurrences of like components. Further, the virtual component are published into real components with automatic 3D file creation completed.

Abstract: Most three dimensional geometric modeling programs employ a feature-based parametric modeling technique. A modification attempted by a user in a feature-based parametric modeling may provide a result different than that expected by the user, since most edits require a “roll back” of a history tree to the state wherein the geometry was originally created. Upon completing the edit, the tree rolls forward, taking into account the changes you have made. A problem arises when a parent feature is destroyed and now a child feature can no longer properly bind. The disclosed invention solves this problem by rolling back the tree to find the last successful bind made by the child, and then roll the model forward such that all downstream binding occurs with the successful bind in tact.

Abstract: Most three dimensional geometric modeling programs employ a feature-based parametric modeling technique. A modification attempted by a user in a feature-based parametric modeling may provide a result different than that expected by the user, since most edits require a “roll back” of a history tree to the state wherein the geometry was originally created. Upon completing the edit, the tree rolls forward, taking into account the changes you have made. A problem arises when a parent feature is destroyed and now a child feature can no longer properly bind. The disclosed invention solves this problem by rolling back the tree to find the last successful bind made by the child, and then roll the model forward such that all downstream binding occurs with the successful bind in tact.

Abstract: A method for use in CAD modeling software to define product structure based on virtual components created independent from geometry and without the need to create files on disk. With the additional capability of assigning geometry to the virtual components of the product structure that sets and orients the virtual components and manages multiple occurrences of like components. Further, the virtual component are published into real components with automatic 3D file creation completed.

Abstract: A system, method, and computer program for determining a simplified representation of an assembly model comprising the steps of saving a plurality of display states and configuration settings of an assembly model in a design representation; translating said design representation into a simplified representation by use of a visibility solution; and storing said simplified representation and said design representation in an assembly document and appropriate means and computer-readable instructions.

Abstract: A system, method, and computer program for determining a visibility solution of a model comprising the steps of rendering a model having a plurality of parts with at least one color value encoded for an at least one corresponding surface identity; distinguishing a plurality of exterior parts from a plurality of interior parts based on said at least one corresponding surface identity; and identifying a plurality of features in said model not copied into a composite image and appropriate means and computer-readable instructions.