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:
Jun. 24, 2008
Filed:
Feb. 07, 2007
Udo Liebram, Pfungstadt, DE;
Anita Sattler, Legal Representative, Zwingenberg, DE;
Hendrik Wölper, Schwelm, DE;
Udo Liebram, Pfungstadt, DE;
Anita Sattler, legal representative, Zwingenberg, DE;
Hendrik Wölper, Schwelm, DE;
Hotset Heizpatronen U. Zubehor GmbH, Ludenscheid, DE;
Abstract
An electrical sleeve heater for an element having a generally cylindrical outer surface. The heater has a generally helical coil centered on an axis and having a pair of opposite coil ends, a pair of generally coaxial, axially aligned, and similar tubes each fixed to a respective one of the coil ends and surrounding the coil so that relative rotation of the coil can radially increase or decrease an inside diameter of the coil. The tubes having axially adjacent inner ends and outer ends, and means for releasably fixing together the coil inner ends.