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Title:
SUPPORT PIPE JOINT DEVICE OF MULTI-STAGE TYPE LIGHTING ROD
Document Type and Number:
Japanese Patent JP3401469
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To avoid welding in a splice section of a support pipe of a multi-stage type lightning rod at a building site, and to form a mechanical connection.
SOLUTION: A support pipe joint device comprising a first joint fitting having a pipe to which a lower-stage support pipe having a tapered surface at a nose can be inserted to a lower direction succeeding the tapered surface, an upper pipe enabling an upper stage support pipe to be inserted in the pipe being succeeded by a tapered surface forming of an end spread shape in the same angle of the above first joint fitting, and a second joint fitting having a pipe in which the pipe of the above first joint fitting can be inserted succeeding the tapered surface, wherein the lower support pipe is welding to connect after being inserted in the pipe of the above first joint fitting, and the upper support pipe is welding to connect after being inserted into the above second joint fitting, and the upper support pipe is inserted in from the nose of the first joint fitting where the above lower-stage support pipe is inserted, and the tapered surface of the above first joint fitting and the tapered surface of the second joint fitting are made close, and the second joint fitting to the first joint fitting and the lower-berth support pipe to the upper row support pipe are fixed with bolts from the exterior.


Inventors:
Tsunekazu Miki
Hiroshi Sonoyama
Application Number:
JP2000001479A
Publication Date:
April 28, 2003
Filing Date:
January 07, 2000
Export Citation:
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Assignee:
Tokyo Lightning Industry Co., Ltd.
International Classes:
H05F3/04; F16B7/14; H02G13/00; (IPC1-7): H05F3/04; F16B7/14; H02G13/00
Domestic Patent References:
JP118091A
JP55127400U
JP4519616Y1
Attorney, Agent or Firm:
Kenji Iwaki



 
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