Title:
JOINT STRUCTURE FOR REINFORCEMENT
Document Type and Number:
Japanese Patent JP3678358
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To facilitate reinforcement connection work for improving workability.
SOLUTION: Axial centers of one joint pipe 3 and a connection bolt 5 are matched to each other, an external thread 5a as a one-thread in a left half part of the connection bolt is screwed to an internal thread 3a as a one-thread in the joint pipe when a fastening ring 7 is turned. In this process, one-fourth of the external thread 5a is not screwed to be left. Then, a four-thread external thread part 5b is matched with the axial center of the other joint pipe 4, and when the fastening ring 7 is turned, the external thread part 5b is screwed into the internal thread part 4a in the joint pipe 4. At the same time, the rest of one-fourth thread part 5a of the connection bolt 5 is screwed into the joint pipe 3, and consequently, both of the external thread parts 5a and 5b are completely screwed into the joint pipes 3 and 4 to be fixed.
Inventors:
Fujio Yamazaki
Application Number:
JP2001401346A
Publication Date:
August 03, 2005
Filing Date:
December 28, 2001
Export Citation:
Assignee:
Fuji Bolt Manufacturing Co., Ltd.
International Classes:
E04B1/58; E04C5/18; (IPC1-7): E04B1/58; E04C5/18
Domestic Patent References:
| JP54126663A | ||||
| JP2732354B2 |
Attorney, Agent or Firm:
Mitsuo Matsuda
Sumiko Shimosaka
Sumiko Shimosaka