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. 14, 1988
Filed:
Jul. 15, 1987
Henry W Thomey, Windsor, CA;
Dyneer Corporation, Scottsdale, AZ (US);
Abstract
A self-aligning pivot bolt for mounting a belt tensioner idler pulley on a base member in which the bolt is formed with upper and lower cylindrical pilot sections separated by an intermediate threaded section. The base member has a bolt receiving opening formed with upper and lower inwardly tapered sections. The bolt and opening are dimensioned so that a lead thread of the threaded section engages an upper portion of the lower tapered section prior to the pilot sections engaging the respective tapered sections of the opening. After partial engagement of the threaded section the lower pilot section begins engagement with the lower tapered section to axially align the bolt within the hole followed by engagement of the upper pilot section with the upper tapered section. The softer metal of the base member flows into the root areas of the bolt threads to trap the bolt in the opening of the base member. The progressive engagement of the pilot sections with the tapered sections of the base member opening insures proper alignment of the bolt within the opening.