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:
Jan. 17, 2012
Filed:
Mar. 25, 2009
Volker Aust, Birkenfeld, DE;
Volker Aust, Birkenfeld, DE;
Herrmann Ultraschalltechnik GmbH & Co. KG, Karlsbad, DE;
Abstract
An ultrasonic welding tool with fluid drive, wherein the ultrasonic welding tool () is connected by way of a piston rod () to a working piston () which is guided in a housing () of the drive, wherein the working piston () sub-divides the drive housing () into a primary chamber () and a secondary chamber (), wherein each of the chambers is able to communicate by way of a valve () with a fluidized pressure source, wherein at least one sensor () is provided for detecting a physical property of the fluid drive which sensor emits an actual signal which is in relationship with the physical property detected and which via a control circuit controls the two valves in such a way that the physical property detected follows a reference value profile.