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:
Feb. 06, 1990
Filed:
May. 16, 1988
Kubotatekko Kabushiki Kaisha, Osaka, JP;
Abstract
A method for producing a synthetic resin union joint, the method including the steps of forming a union nut having a screw portion and a union sleeve of an elastically softenable material, the union sleeve having a union swivel end and a connecting end, heating a length of the union nut at least equal to a thickness dimension of the flange part but not extending to the screw portion so as to elastically soften the length of the union nut, abutting one end of a truncated cone-shaped expansion guide with an end face of the union swivel end, shifting and enlarging the length of the union nut along the expansion guide so as to pass over the union swivel end and so that the union nut passes over the guide, and returning the length of the union nut to its original configuration due to a restoring force of the elastically softenable material so as to be positioned within the union swivel end and the connecting end.