WO2026003888 - SAFETY ANTI-LOOSENING SCREW–NUT SYSTEM
National phase entry is expected:
Publication Number
WO/2026/003888
Publication Date
02.01.2026
International Application No.
PCT/IT2025/050149
International Filing Date
23.06.2025
Title **
[English]
SAFETY ANTI-LOOSENING SCREW–NUT SYSTEM
[French]
SYSTÈME VIS-ÉCROU DE SÉCURITÉ ANTI-DESSERRAGE
Applicants **
CASCIANI, Angelo
Inventors
CASCIANI, Angelo
Priority Data
102024000014509
24.06.2024
IT
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Natural Person
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1882 | |
| EPO | Filing, Examination, Granting | 6197 | |
| Japan | Filing, Examination, Granting | 1783 | |
| South Korea | Filing, Examination, Granting | 1315 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
15,917
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Abstract[English]
The aim of the present invention is to solve or significantly reduce the phenomenon of unintentional unscrewing in bolt mechanics as a result of vibrations, forces or rotations This aim can be achieved by applying the following technical solution: the use of a screw characterised by the presence of two threaded stems separated by an unthreaded stem with a smaller diameter than the other stems, and a special nut, which is matched to the final thread of the screw. The nut is free to slip, rotate and misalign itself from the screwing axis when it reaches the unthreaded stem, making unintentional unscrewing impossible. This technical solution can be applied in the context of industrial accident prevention, related to the unintentional unscrewing of fasteners.[French]
L'objectif de la présente invention est de résoudre ou de réduire significativement le phénomène de dévissage involontaire en mécanique des boulons à cause de vibrations, de forces ou de rotations. Cet objectif peut être atteint par l'application de la solution technique suivante : l'utilisation d'une vis caractérisée par la présence de deux tiges filetées séparées par une tige non filetée ayant un plus petit diamètre que les autres tiges, et un écrou spécial, qui concorde avec le filetage final de la vis. L'écrou est libre de coulisser, tourner et se désaligner de l'axe de vissage lorsqu'il atteint la tige non filetée, rendant un dévissage involontaire impossible. Cette solution technique peut être appliquée dans le cadre de la prévention des accidents industriels, se rapportant au dévissage involontaire d'éléments de fixation.