The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6581979 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 24, 2003

Filed:

May. 04, 2001
Applicant:
Inventors:

Hiroshi Ikegami, Osaka, JP;

Masatoshi Takashima, Osaka, JP;

Assignee:

Totaku Industries, Inc., Takatsuki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 3/300 ;
U.S. Cl.
CPC ...
F16L 3/300 ;
Abstract

The spiral pipe joint comprises a nipple a caulking ring and a flexible string-shaped pressure contact member . After an inserting portion of the nipple is inserted into a pipe body P, the pressure contact member is wound once or more times around the outer peripheral surface of the pipe body P existing above the inserting portion and the caulking ring is placed on the outside of the thus wound pressure contact member and is compressed in the center direction of the pipe body P to thereby reduce the diameter of the caulking ring in such a manner that the caulking amount thereof on the small-diameter stepped portion is larger than the step level difference between the inserting portion and small-diameter stepped portion


Find Patent Forward Citations

Ikegami, Hiroshi. (2003). Joint for spiral pipe and connecting method (U.S. Patent No. 6581979). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6581979

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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