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1. (WO2018061005) FASTENER SYSTEMS WITH OVERTIGHTENING AND LOOSENING PREVENTION

Pub. No.:    WO/2018/061005    International Application No.:    PCT/IL2017/051095
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Fri Sep 29 01:59:59 CEST 2017
IPC: F16B 39/10
F16B 39/14
F16B 39/20
F16B 39/24
F16B 39/26
F16B 39/28
F16B 39/282
F16B 39/284
F16B 39/286
F16B 39/32
F16B 39/34
Applicants: BOGRASH, Philip
Inventors: BOGRASH, Philip
BAKKER, Mark
Title: FASTENER SYSTEMS WITH OVERTIGHTENING AND LOOSENING PREVENTION
Abstract:
In a number of embodiment the washers of this invention have been provided with the narrowing central hole wherein the washer is being compressed during tightening thereby gripping the bolt and preventing its further turning whereas the nut and the washer are immobilized relative to each other. In another embodiments when the washer is compressed, wedges and preventing its further turning and thus preventing any increase in tightening level. Stoppers are also provided which are put on top of the embodiments with a nut having cuts along parts of its length in combination either with a flat or cup washer for compressing the nut radially and thus gripping the bolt at a predetermined axial load/torque level, as well as a nut having a cut through the middle and two footers which flexes when acted upon by axial load of predetermined level and reaction forces from the two footers gripping the bolt