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:
Apr. 17, 2012
Filed:
Sep. 17, 2008
Tamotsu Yamashita, Shiga, JP;
Taihei Yokoyama, Shiga, JP;
Tamotsu Yamashita, Shiga, JP;
Taihei Yokoyama, Shiga, JP;
Suiken Co., Ltd., Shiga, JP;
Abstract
A branching unit for boring without stopping passage of fluid, which is suitable for forming an openingat a pipe wallby boring a part of the pipe wallof an existing pipeusing a drill machinehaving a hole sawto connect a branch pipe to the existing pipe, comprising: a sealing casehaving plurality of separate casingseparated in a circumferential direction R and a branch pipe portionprotruding and branching off in the radial direction C; a valve bodyrotating between an inner circumferential surfaceof the separate casingand an outer circumferential surfaceof the existing pipeto open and close a branch hole; and a rotation mechanismrotating the valve body