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. 08, 2002
Filed:
Feb. 14, 2000
Ralf von Borstel, Hechthausen, DE;
Reinhard Czaja, Hamburg, DE;
Frank Kuehn, Sendenhorst, DE;
Claas Hiestermann, Ahausen, DE;
Husnu Can, Hamburg, DE;
Falco Sengebusch, Moelln, DE;
Mario Meyer, Moelln, DE;
Marc Peters, Hamburg, DE;
Meiko Kaninck, Harmstorf, DE;
Abstract
A connection bolt arrangement typically used for connecting two structural members to each other, for example in aircraft construction, includes a conically tapered connection bolt that is force-locked or frictionally engaged in an expansion sleeve so as to cause a radial outward expansion of the sleeve and thereby tightly hold the structural components. An apparatus for releasing such a connection bolt arrangement includes two levers that are pivotably connected to each other, a stamping actuator arranged between respective first ends of the two levers, a pulling extraction device mounted at the second end of the first lever, and a pushing block mounted at the second end of the second lever. The actuating force applied by the actuator is transmitted through the levers and applied to the connection bolt and to the expansion sleeve in opposite directions so as to tend to push the bolt out of the sleeve. The extraction device additionally applies a tension pulling force to the connection bolt relative to the expansion sleeve. The combination of the pressing forces and the tension pulling force releases the connection bolt from the expansion sleeve. The tension pulling force is developed by applying a turning torque to the extraction device.