Other

Eastman-kodak Company

David Alan Williams

Karl Sperber

Calvin Owen Stoutz

A rifled barrel having splines. A projectile has at least one inner fin. A method to spin a projectile to render its shell and its fluid to spin at the approximately the same rate.

Rifled barrel

The present disclosure discloses a paintball marker capable of interchanging between a bolt action firing valve and a spool action firing valve. The present disclosure further provides a method of interchanging between the bolt action firing valve and the spool firing valve.

Paintball marker with interchangeable firing modes

Ultrasonic method and apparatus having improved turn-on. Low level power is furnished to an unloaded transducer to start it running at a desired frequency. High level power is then furnished the transducer for performing the ultrasonic operation while loaded. The high level power is stopped and the low level power is maintained, reduced or stopped before the load is removed.

Growing community of inventors

Bluffton, IN, United States of America

David Alan Williams