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. 04, 2020
Filed:
Jan. 21, 2013
Ttapdrive As, Kristiansand, NO;
David C. Goss, Rockford, IL (US);
TTAPDRIVE AS, , NO;
Abstract
The invention provides a screw in which the screw head () has a slot () in the upper surface of the screw head, an upper peripheral wall () of regular planform extending down from the rim of the slot into the screwhead, the upper peripheral wall () being generally aligned with the axis of the screw to form a recess (), a sloping transition surface (), extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (), and a further recess () extending downwardly from the lower edge of the sloping transition surface (), in which the dimensions of the screw head are such that when the screwhead is engaged by a tool () having upper () and lower () engagement sections, and in which the upper engagement section () extends downwardly with respect to the axis of the screw to which the tool is to engage and the lower engagement section () extends further downwardly, and in which there is at least one protrusion (or rib) () on the inside wall () of the further recess (), so that there is a 'stick fit' between the protrusion () on the inside wall () of the further recess () and the lower engagement section () of the tool ().