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:
Aug. 05, 1997
Filed:
Oct. 26, 1995
Richard J Ernst, Palatine, IL (US);
Mark S Timmerman, Elgin, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A construction anchor for mounting an object on a structure of masonry, concrete, wood, metal or the like includes an anchoring portion and a cap. The anchor is adapted to be inserted, anchoring portion first into a pre-drilled adhesive-filled hole. The anchoring portion has a threaded bore, which includes an unthreaded close-fit-counterbore portion outward of a threaded portion. The cap prevents dust, dirt and adhesive from entering the threaded bore, and has an upper surface with a removable central area. When the adhesive has set, holding the construction anchor within the hole, the central area is removed, and a screw or bolt is inserted through the hole left by the removal and engaged with the threaded portion of the threaded bore. The unthreaded close-fit-counterbore portion of the threaded bore provides a stretch zone for the screw or bolt.