Barnstead Thermolyne Corporation

Curt McFadden

James R Edwards

Mark D Lockwood

Kerry W Leppert

Eric Garz

Roger W Earle

Kenneth David Hermsen

John L Meek

Eric Jackson

A stirring hot plate for simultaneously heating and stirring a mixture includes a phase controlled motor that spins magnets which couple to, and thereby spin, a stir bar within the mixture. In addition to spinning the magnets, the motor includes an operational mode in which the motor is rapidly braked thereby quickly spinning down the stir bar. The stirring hot plate also includes a visual indicator to the user that the platform is hot-to-the-touch that is especially effective when the stirring hot plate is not in use.

Stirring hot plate

Growing community of inventors

Dubuque, IA, United States of America

Curt McFadden