Title:
EASY-TO-REMOVE EXPANSION BOLT
Document Type and Number:
WIPO Patent Application WO/2022/104758
Kind Code:
A1
Abstract:
An easy-to-remove expansion bolt, belonging to the field of hardware fittings. The easy-to-remove expansion bolt comprises a screw (1), an expansion pipe (4) having internal notch plates (5) provided in a pipe mouth thereof, a nut (2) and a gasket (3); and during removing, clamping is formed by means of the internal notch plates (5) in the mouth portion of the expansion pipe (4) and an external tool, and rotation is performed to loosen the expansion pipe (4) and a hole wall, thereby achieving the purpose of complete removing and repeated use of the expansion bolt.
Inventors:
DANG JIANMIN (CN)
Application Number:
PCT/CN2020/130696
Publication Date:
May 27, 2022
Filing Date:
November 21, 2020
Export Citation:
Assignee:
XUZHOU OUBAI RUI INTELLIGENT EQUIPMENT CO LTD (CN)
International Classes:
F16B13/06
Domestic Patent References:
| WO2000028224A1 | 2000-05-18 |
Foreign References:
| CN207018319U | 2018-02-16 | |||
| CN207514033U | 2018-06-19 | |||
| CN201496356U | 2010-06-02 | |||
| CN103256283A | 2013-08-21 | |||
| CN104712630A | 2015-06-17 | |||
| CN205064494U | 2016-03-02 |
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