Other

Graco Inc.

Raymond A Vincent

William C Scherer

A multi-color paint dispensing system for one or more paint guns wherein a small, simple, color changing valve mechanism is disposed proximate the dispensing gun. The color changing valve mechanism comprises a body carrying a plurality of pressure responsive check valves which are connected to individual paint supply lines. A remote valve bank responds to selection signals to individually pressurize the paint supply lines, the line selected for pressurization being operative to unseat the check valve in the color changing valve mechanism and permit paint to flow to the dispensing gun or guns. The illustrated check valves employ annular seats having radially expansible O-rings disposed thereon, the O-rings normally closing the radial paint passage but being responsive to paint pressure to expand outwardly to permit fluid flow.

Multicolor paint dispensing system having a pressure responsive color

A rotating mechanism such as a model aircraft propeller shaft is balanced by a dynamic balancing apparatus comprising a disc rotating with the shaft and a stainless steel O-ring partly filled with mercury lodged in an undercut groove in the face of the disc. The method of manufacture involves placing the ring in the groove and compressing the ring to expand it radially into the undercut area.

Dynamic balancer for rotating bodies and method of manufacturing same

Apparatus is disclosed for spraying paints wherein the paint comprises a predetermined ratio mixture of at least two components, and wherein the ratio of these components is controlled automatically as they are delivered to a spray gun and prior to mixing, by means flow-sensing devices which generate flow-representative signals to a control unit. The control unit calculates the appropriate ratio and adjusts a flow regulating device in at least one of the component lines for ensuring continued flow at the desired ratio.

Growing community of inventors

Detroit, MI, United States of America

Raymond A Vincent