Title:
HEAD OF A FASTENING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/045649
Kind Code:
A1
Abstract:
The technical solution relates to the field of fastenings. The technical result is an increase in reliability and durability, and an increase in the maximum torque when the fastener slot is acted on by a tool. The technical result is achieved in that a hexagonal head of a fastening element is provided with a cross slot having a short groove and, perpendicular to said short groove, an elongate (end-to-end) straight groove running along the entire upper surface of the head of the fastening element (from one edge to the other), the side walls of the grooves being straight and parallel to one another, and the width (i.e. the distance between the walls) of the short and long grooves being equal, wherein recesses are provided in the centre region of the slot which are commensurate with (one of) the standard sizes of the small ridge of a Z-type tool under GOST 10573-86, the width of the short groove is in compliance with said standard, and the width of the elongate groove is equal to the width of the short groove.
More Like This:
| JP2002317806 | DECORATIVE NUT AND BOLT WITH ANTITHEFT FUNCTION |
| WO/2021/230420 | BOLT HAVING OPENING |
| WO/2018/219372 | SCREW COMPRISING ASSOCIATED SCREWDRIVER OR BIT |
Inventors:
KOLOSOVSKII PAVEL ANATOLEVICH (RU)
Application Number:
PCT/RU2020/050162
Publication Date:
March 11, 2021
Filing Date:
July 20, 2020
Export Citation:
Assignee:
KOLOSOVSKII PAVEL ANATOLEVICH (RU)
International Classes:
F16B23/00
Foreign References:
| CN2786343Y | 2006-06-07 | |||
| RU2523712C1 | 2014-07-20 | |||
| JP2000108043A | 2000-04-18 | |||
| RU2672660C1 | 2018-11-16 |
Other References:
"Countersunk flat head screws (common head style) with type H or type Z cross recess. Product grade A. Part 1. Steel screws of property class 4.8", GOST R ISO 7046-1- 2013, 1 January 2015 (2015-01-01), pages 5 - 6
Attorney, Agent or Firm:
NAIGEBORIN, Vitalii Dmitrievich (RU)
Download PDF: