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:
Oct. 03, 2000
Filed:
May. 12, 1999
Peter Jack Wierzchon, South Bend, IN (US);
Robert Bosch Corporation, Broadview, IL (US);
Abstract
A method of fastening a first member to a second member. The first member has a first opening with first left handed threads that extend from a first surface to a second surface. A stud having a shaft with a first section having right handed threads that extend from an end to a first groove, a second section with second left handed threads that extend from the first groove to a second groove adjacent a head and a radial surface that extends on an angle from the second groove toward a peripheral surface on the head is obtained from a supply source. The shaft is inserted into the first opening to engage the first and second left handed threads and an initial torque is applied to the head to bring the radial surface into engagement with the first left handed threads. Thereafter, additional torque is applied to the head to cause the radial surface to engage and deform a portion of the first left handed threads as the peripheral surface is moved into engagement with the second surface. A reversing torque is applied to the head to move the peripheral surface away from the second surface and permit the second end to pivot in a corresponding arc with respect to the axis of the first opening. A second member is obtained from a supply and a second opening therein is aligned with the second end of the shaft. A nut is placed on the right handed threads and an initial torque applied to the nut to bring the second housing into engagement with the first surface. Thereafter, a final torque is applied to the nut to cause the first and second left handed threads to corresponding rotate and bring the head into engagement with the second surface and create a desired compressive force between the nut and head to fasten the second member with the first member.