Abstract: A handheld computer device is configured to selectively receive a plurality of fluid output values from a paint sprayer and configured to operate in an accessible mode in which the handheld computer device is in a first location where wireless connectivity, via a continuous or near continuous communication path, to at least one of a network server or the paint sprayer is accessible or operate in an inaccessible mode in which the handheld computer device is in a second location out of range of the continuous or near continuous communication path to at least one of the network server or the paint sprayer.

Abstract: A handheld computer device is configured to selectively receive a plurality of fluid output values from a paint sprayer and configured to operate in an accessible mode in which the handheld computer device is in a first location where wireless connectivity, via a continuous or near continuous communication path, to at least one of a network server or the paint sprayer is accessible or operate in an inaccessible mode in which the handheld computer device is in a second location out of range of the continuous or near continuous communication path to at least one of the network server or the paint sprayer.

Abstract: A handheld computer device is configured to selectively receive a plurality of fluid output values from a paint sprayer and configured to operate in an accessible mode in which the handheld computer device is in a first location where wireless connectivity, via a continuous or near continuous communication path, to at least one of a network server or the paint sprayer is accessible or operate in an inaccessible mode in which the handheld computer device is in a second location out of range of the continuous or near continuous communication path to at least one of the network server or the paint sprayer.

Abstract: A resistance welding electrode for producing spot welds on a workpiece without marring comprises a hollow electrically conductive shank for conducting welding current and pressurized cooling fluid, an electrode head affixed to a rigid, electrically insulating, tubular housing having a flange with a groove and surrounding the free end of the shank, a spring engaging the shank and tubular housing to bias the head out of engagement with the free end of the shank and a ring of resilient, fluid sealing material retained in the groove to engage the shank and form a chamber with the tubular housing and head for cooling fluid from the shank. The ring allows rocking movement of the tubular housing and head relative to the shank so that the workpiece contact area may conform to the workpiece when welding pressure is applied to the shank.