The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2006
Filed:
Aug. 20, 2004
Curt Mcfadden, Dubuque, IA (US);
Kenneth David Hermsen, Dubuque, IA (US);
Roger W. Earle, Dubuque, IA (US);
James Edwards, Dubuque, IA (US);
Kerry W. Leppert, Dubuque, IA (US);
Eric Jackson, Dubuque, IA (US);
Eric Garz, Platteville, WI (US);
Mark Lockwood, Dubuque, IA (US);
John L. Meek, Rock Hill, SC (US);
Curt McFadden, Dubuque, IA (US);
Kenneth David Hermsen, Dubuque, IA (US);
Roger W. Earle, Dubuque, IA (US);
James Edwards, Dubuque, IA (US);
Kerry W. Leppert, Dubuque, IA (US);
Eric Jackson, Dubuque, IA (US);
Eric Garz, Platteville, WI (US);
Mark Lockwood, Dubuque, IA (US);
John L. Meek, Rock Hill, SC (US);
Barnstead/Thermolyne Corporation, Dubuque, IA (US);
Abstract
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.