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:
Apr. 05, 2022
Filed:
Dec. 04, 2018
Hilti Aktiengesellschaft, Schaan, LI;
Hans-Dieter Gaul, Augsburg, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A setting method for expansion anchors via an impact wrench has a first phase Sand a second phase S. In the first phase, a rotary impact is repeatedly exerted on a screw element of the expansion anchor and a torque transmitted from the rotary impact to the screw head is estimated. The first phase Sis ended when the estimated transmitted torque exceeds a threshold value specified for the expansion anchor. During the second phase, a first number of rotary impacts specified for the expansion anchor are exerted on the screw head. A current rate of change of the estimated torque is monitored at least during the first phase. In response to the current rate of change exceeding a limit value for the rate of change specified for the expansion anchor, a modified second phase is started, in which a second number of rotary impacts specified for the expansion anchor are exerted on the screw head, the second number being less than the first number.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile