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:
Aug. 09, 2005
Filed:
Jun. 02, 2004
Thomas Bader, Landsberg, DE;
Hans-christian Donner, Karlsfeld, DE;
Thomas Bader, Landsberg, DE;
Hans-Christian Donner, Karlsfeld, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A device switch () for a hand-held tool, particularly for a screw drill or drilling machine, having a control device () which is arranged in a switch housing (), a trigger () which is movably supported at the switch housing (), the rotational speed of a driving motor () of the hand-held tool being controlled by the control device () depending on the position of the trigger () relative to the switch housing (), and a pressure increasing arrangement () with a contacting area () on a contacting element () which makes pressing contact with a contact region () of a mechanical resistance element () in a trigger pressure position of the trigger () between a zero load position and a full load position, the displacement resistance of the trigger () being increased by this mechanical resistance element (). The contact region () is arranged outside the switch housing ().