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.:
Date of Patent:
Dec. 04, 2001
Filed:
Apr. 10, 2000
Makoto Fujii, Sanda, JP;
Takuya Ishida, Sanda, JP;
Nippon Pillar Packing Co., Ltd., Osaka, JP;
Abstract
In the inner ring press-insertion jig for a pipe joint made of resin according to the invention, a diameter-increasing ring member in which the outer diameter can be changed to the maximum outer diameter and to the minimum outer diameter by axial movement is fitted onto a front small-diameter portion of a holder which insertingly holds a sleeve-like inner ring. A fixing structure which, under a state where the outer diameter of the diameter-increasing ring member is changed to the maximum outer diameter, positionally fixes the diameter-increasing ring member is formed between the diameter-increasing ring member and the holder in a manner that the fixation can be canceled. Although pressing inserting and connecting works can be performed at a very high efficiency without requiring preheating or the like on an end portion of a pipe member made of resin, an inner ring can be easily pressingly inserted and fixed into the pipe member without damaging the tip end of the inner ring and the pipe member made of resin even when there is a production error of a small degree, and in an increased diameter state which is always uniform and appropriate.