Graco Inc.

Minnesota Mining and Manufacturing Company

Carl D Jacobsen

Richard D Anderson

Lawrence J Lunzer

Frank A Sommerfeldt

Michael R Harms

A spray gun designed for high volume low pressure (HVLP) use is provided with a simple yet effective mechanism for providing feathering as well as allowing for extended needle and nozzle life. A poppet member is spring biased and moves some distance to first initiate air flow prior to initiation of fluid flow. The needle nozzle combination is provided with geometry such that the location of highest velocity is separate from the seating area so as to minimize wear of the seating areas and thus extend life. A two stage pressure drop is utilized for use with plant air. The two stage drop provides more consistent results.

HVLP spray gun

A container for pancakes of recording tape has an L-shaped base, mandrels extending horizontally from the base on which pancakes are placed, and a cover which encloses the pancakes. The circumference of each mandrel is expandable to secure the pancakes in position. Each mandrel includes a frame having a longitudinal slot, an expander cam disposed for rotation in the slot, a flexible cover, and an end cap. The cover includes recesses for receiving and supporting the free ends of the mandrels.

Reusable container for tape pancakes

An electrostatic spray applicator system of the type utilizing pressurized air from an external source to develop the electrical voltage driving conditions within a spray applicator. The electrical operating conditions are represented by electrical signal generating devices within the applicator, and these electrical signals are converted into optical signals within the applicator for transmission to a remote source. The optical signals are received at the remote source and converted back into electrical signals corresponding to the parameters being measured, and are subsequently converted into decimal display values for visualization by an operator.

Growing community of inventors

Hudson, WI, United States of America

Carl D Jacobsen