Electrostatic spray gun power supply connection
AssigneeGraco Inc.
InventorsRobert J. Lind, Lawrence J. Lunzer, Stanley G. Karwoski
Life of this patent
Estimating the term…
Abstract
An electrostatic spray gun for the application of paints and other coatings has a high voltage power supply having a contact at the front end thereof. A flange on the end of the power supply surrounds the contact and a rubber boot seal snaps over the flange. Located within the rubber boot is a conductive rubber pin which contacts with a conductor located in the barrel of the gun. Utilization of this design minimizes capacitance in the front end of the gun and also virtually eliminates air volume in the area which in turn limits the production of harmful ozone.
Claims3
In an electrostatic spray gun comprising a high voltage power supply having an output contact and a barrel cavity containing an elastomeric boot covering said contact, said boot having a generally cylindrical passage therethrough, the improvement comprising a conductive elastomeric flexible member located in and compressed so as to substantially fill said passage and said boot being compressed in said cavity to eliminate air and reduce capacitance.
Dependencies are inferred from the claim text.