Invention Grant
- Patent Title: Screw which can be screwed into a component
- Patent Title (中): 可以拧入组件的螺丝
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Application No.: US13120004Application Date: 2009-09-22
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Publication No.: US08545152B2Publication Date: 2013-10-01
- Inventor: Rolf Kuenkel , Walter Kornsteiner , Reinhold Lenherr , Axel Tome
- Applicant: Rolf Kuenkel , Walter Kornsteiner , Reinhold Lenherr , Axel Tome
- Applicant Address: DE Bad Laasphe
- Assignee: Ejot GmbH & Co., KG
- Current Assignee: Ejot GmbH & Co., KG
- Current Assignee Address: DE Bad Laasphe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: DE102008048321 20080922
- International Application: PCT/EP2009/006844 WO 20090922
- International Announcement: WO2010/031590 WO 20100325
- Main IPC: F16B33/04
- IPC: F16B33/04

Abstract:
The invention relates to a screw which can be screwed into a component and which will resist further screwing into an internal thread within said component once a maximum torque has been reached. For this purpose, a screw body having an external thread is combined with a screw drive element which projects into a bore within said screw body and, within said bore, is connected to the screw body via static friction. At least part of this combination is made of a plastic material, with the static friction having the effect of a slipping clutch when a maximum torque acts on the screw drive element. The screw drive element is connected to the screw body via a ratchet in such a way that when the screw body is unscrewed from the internal thread within said component, turning said screw drive element will cause the ratchet to engage, thereby entraining the screw body.
Public/Granted literature
- US20110236153A1 SCREW WHICH CAN BE SCREWED INTO A COMPONENT Public/Granted day:2011-09-29
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