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. 17, 2014
Filed:
Aug. 12, 2010
Eberhard Christ, Tambach-Dietharz, DE;
Jörg Thiem, Zella-Mehlis, DE;
Marco Werkmeister, Leinatal, DE;
Eberhard Christ, Tambach-Dietharz, DE;
Jörg Thiem, Zella-Mehlis, DE;
Marco Werkmeister, Leinatal, DE;
EJOT GmbH & Co. KG, Bad Laasphe, DE;
Abstract
Apparatus for connecting at least two plates () of which a supporting plate () comprises a higher strength than a supported plate () posed thereon. By means of a connecting element () rotated by a rotational feeder unit (), the connecting element with a collar () presses the supported plate () onto the supporting plate (). With a shaft () a friction welding connection to the supporting plate () is made. The rotational feeder unit () is provided with a measurement device with measures an axial force exerted by the rotational feeder unit as well as a respective feeding motion and which indicates, upon abutment of the shaft of the connecting element onto the supporting plate, the pressure increase encountered therein, which, thereby, advances the rotational feeder unit, the feeding motion of which is adjustable to at least three sequential connecting stages. Therein, the first stage is adjusted to the penetration of the supported plate, the second stage is adjusted to the friction welding of the shaft with the supporting plate. The third stage completes the friction welding process by putting up the axial force of the connecting element onto the supporting plate