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. 03, 2017
Filed:
Aug. 05, 2013
The Boeing Company, Chicago, IL (US);
Robert Erik Grip, Rancho Palos Verdes, CA (US);
Gerald E. Mabson, Bellevue, WA (US);
Other;
Abstract
Methods, systems, and apparatuses for determining a flexibility value K of a fastener. An illustrative system includes a test apparatus including three straps with a strain gauge coupled to each strap. A fastener, such as a bolt, is installed through the straps, with a tensile or compressive force then applied to the test apparatus. Responsively, the strain gauges generate signals indicative of elastic deformation of the straps. The signals are transmitted to a signal processor, which may display deformation values, or alternatively, may process the signals to calculate the value K. The elastic deformation values acquired from the strain gauges, together with cross sectional area and elastic moduli of the straps, are entered into a calculation which applies a predetermined relationship to arrive at the value K. The test apparatus may be a stand-alone device for use in calculating the value K.