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. 31, 1984
Filed:
Jun. 14, 1982
Knut C Schoeps, Tyreso, SE;
Atlas Copco AB, Nacka, SE;
Abstract
A bolt for transmitting axial load having a head provided with a weakening slot for promoting elastic deformation of the head in response to the axial load magnitude. On the head there is a pair of measure points located at each side of the slot in or adjacent the free end surface of the head at a distance between them that decreases at increasing axial load on the bolt. The bolt head also comprises a pair of reference points located either in the same axial plane as the measure points but in a direction perpendicular to the latters or in a plane axially spaced from that of the measure points adjacent the bottom of the weakening slot. The location of the reference points is such that the relative distance between them remains unaffected by the deformation of the bolt head and thereby the axial load transmitted by the bolt. The axial load magnitude is determinable from the difference in distance between the measure points and the reference points, or from the variation in distance between the measure points only measured on the bolt in unloaded condition and under the actual load. A gauge of a conventional design may be used for the measurements required.