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:
Oct. 14, 2025
Filed:
Oct. 29, 2021
Kubota Corporation, Osaka, JP;
DAIFUKU CO., LTD., Osaka, JP;
Abstract
A pipe joint is provided in which a seal member insertion spaceis formed between a first tapered surfaceof a socketand an outer circumference of a spigot, a seal memberis inserted into the seal member insertion space, and a glandthat presses the seal memberinto the seal member insertion spaceis externally fitted to the spigot. The seal memberhas a bulb partat one end part thereof. A guide partthat guides the bulb partfrom an opening end faceof the socketinto the seal member insertion spaceis formed on the inner circumference of the socket. The guide parthas a second tapered surface. An angle of inclination of the second tapered surfaceis greater than an angle of inclination of the first tapered surface