Title:
COMMUNICATION PIPING UNIT AND REFRIGERATING DEVICE USING THE UNIT
Document Type and Number:
WIPO Patent Application WO/2001/096773
Kind Code:
A1
Abstract:
A communication piping unit (10), comprising a tightening joint part (12) provided at one end of a pipe (1) having a screw (11) screwed onto threads (21) formed in the outer peripheral surface of a pipe connection part (20), a nut (2) with a stepped part (2a) on the inner peripheral surface thereof, a front ferrule (3) with a front tapered surface (3a) corresponding to a divergent tapered surface (22) formed on the inner peripheral surface of the pipe connection pipe (20), and a back ferrule (4) allowed to abut on the rear surface of the front ferrule (3) and pressed against the front ferrule (3) by the stepped part (2a) of the nut (2), whereby, by tightening the nut (2), a clearance between the front ferrule (3) and the pipe (1) and a clearance between the tapered surface (22) of the pipe connection part (20) and the front tapered surface (3a) of the front ferrule (3) can be sealed.
Inventors:
TAIRA SHIGEHARU (JP)
Application Number:
PCT/JP2001/003393
Publication Date:
December 20, 2001
Filing Date:
April 20, 2001
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
TAIRA SHIGEHARU (JP)
TAIRA SHIGEHARU (JP)
International Classes:
F16L19/02; F25B41/00; (IPC1-7): F16L19/02; F25B41/00
Foreign References:
| JPH05240380A | 1993-09-17 | |||
| JPS6128991U | 1986-02-21 | |||
| JPS5454918U | 1979-04-16 | |||
| JPH0875041A | 1996-03-19 |
Attorney, Agent or Firm:
Aoyama, Tamotsu (3-7 Shiromi 1-chom, Chuo-ku Osaka-shi Osaka, JP)
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