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. 06, 1989
Filed:
Jun. 08, 1987
Josef F Volkmann, Torrance, CA (US);
Other;
Abstract
There is disclosed a torque limiting fastener system for forged or pressed metal nuts. The stamped metal fasteners have a central, cylindrical sleeve, an annular ledge which is dependent from one end of the sleeve, and a surrounding skirt, generally with hexagonal flats, which forms an annular well about the cylindrical sleeve. The torque limiting characteristic is imparted to these fasteners by a drive member which is of approximately the same dimensions as the stamped or pressed metal fastener and which has a plurality of prongs which are received in apertures or recesses in the stamped fastener. The apertures can open into the annular well about the central sleeve of the fastener or can be placed in an annular flat base which is formed on some of the stamped metal fasteners. The drive member is formed of a suitable plastic material having a precisely controlled shear strength.