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:
May. 19, 2026
Filed:
Sep. 30, 2021
Shonan Gosei-jushi Seisakusho K.k., Hiratsuka, JP;
Takao Kamiyama, Hiratsuka, JP;
Makoto Ishida, Hiratsuka, JP;
SHONAN GOSEI-JUSHI SEISAKUSHO K.K., Hiratsuka, JP;
Abstract
Segments each having side platesandand a plurality of inner platesandinside the side plates are coupled in the circumferential direction and in the longitudinal direction to construct a rehabilitation pipe inside an existing pipe. A plastic nut retainerfor retaining therein a nutengaged with a coupling boltis attached between the side plateon one side of the segmentand the inner plateadjacent thereto. The coupling bolt is screwed into the nut to couple the segmentsandin the longitudinal direction due to clamping by screwing. A groove is formed in the nut retainer, and the nut is press-fitted into the groove and retained in the nut retainer.