Title:
JOINT IN WHICH INCOMPLETE THREAD PART OF MALE THREAD PART IS UTILIZED
Document Type and Number:
WIPO Patent Application WO/2019/194189
Kind Code:
A1
Abstract:
A joint, in which a pair of rebars (1, 1) are connected by a cylindrical coupler (2) that screws onto male thread parts (1c) provided at an end section of both rebars. In one (1) of the pair of rebars (1, 1), thread ridges of a female thread part (2a) of the coupler (2) engage deeply, so as to dig in at least until an elastic deformation state is reached, into thread grooves of an incomplete thread part (1ca) at the base end of the male thread part (1c) of the rebar (1), whereby a loosening prevention torque is produced between the male thread part (1c) and the coupler (2). Because the loosening prevention torque is produced between the male thread part (1c) and the coupler (2) by utilizing the incomplete thread part (1ca), which is not typically used, there is no need to ensure that the male thread part (1c) of at least one (1) of the rebars has sufficient length for a lock nut, etc., to be screwed thereon.
More Like This:
Inventors:
FUKUDA AKIRA (JP)
WAKIYAMA KOZO (JP)
HIRAI KEIJI (JP)
WAKIYAMA KOZO (JP)
HIRAI KEIJI (JP)
Application Number:
PCT/JP2019/014663
Publication Date:
October 10, 2019
Filing Date:
April 02, 2019
Export Citation:
Assignee:
FUKUDA AKIRA (JP)
International Classes:
E04C5/18; E04G21/12
Foreign References:
| JP6147404B1 | 2017-06-14 | |||
| JPH08284319A | 1996-10-29 | |||
| JPH11336257A | 1999-12-07 | |||
| JP3068610U | 2000-05-16 | |||
| JPH1171860A | 1999-03-16 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Download PDF:
Previous Patent: REFLECTED LIGHT MEASUREMENT DEVICE
Next Patent: COMMUNICATIONS SYSTEM AND BANDWIDTH CONTROL METHOD
Next Patent: COMMUNICATIONS SYSTEM AND BANDWIDTH CONTROL METHOD